Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS State College, PA
Issued by NWS State College, PA
331
FNUS51 KCTP 171823
FWFCTP
Fire Weather Planning Forecast for Central Pennsylvania
National Weather Service State College, PA
223 PM EDT Sun May 17 2026
.DISCUSSION...
A weak mid and upper level disturbance over the Middle Ohio River
Valley and Central Appalachians will drift northeast across
Central Pennsylvania this afternoon and evening, accompanied by a
few showers and possibly a thunderstorm. Rainfall accumulations
should average below 0.10" (and most locations likely stay dry).
Clearing skies from west to east overnight could result
in some fog formation, especially in the valleys in Northwestern
PA, for any location that gets rainfall this afternoon. Temperatures
will trend significantly warmer today through the early part of
the upcoming week with this upcoming bout of summerlike heat
peaking Monday and Tuesday.
A strong cold front will bring showers and scattered
thunderstorms on Wednesday, some of which could be severe in the
afternoon and early evening. Cooler, more seasonable conditions
will follow for the end of the week and into Memorial Day weekend.
PAZ064-180815-
Adams-
Including the city of Gettysburg
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 63 (+5) 92 (+7) 67 92
RH % (24h trend) 90 (-3) 38 (-12) 75 35
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 6 G16
Precip Amount 0.00 0.00 0.07 0.00
Precip Duration 0 0
Precip Begin 6 PM 7 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 380 6670 430 7790
Transport Wnd (mph) SW 7 S 14 SW 10 SW 16
Vent Rate (kt-ft) 2280 80040 3870 109060
Dispersion 2 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 52 Gen Good 35 Fair 90 Good 86 Good
Max ADI Late 3 Very Poor 111 Very Good5 Very Poor 141 Very Good
Max LVORI Early 4 5 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the upper 80s. Minimum RH 49 percent.
Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 43 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows around 50.
Highs in the upper 60s. Minimum RH 56 percent. East winds around
5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 70 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Minimum
RH 68 percent. South winds around 5 mph.
$$
PAZ034-180815-
Bedford-
Including the city of Bedford
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type None None Tstms None
Chance Precip (%) 0 0 20 0
Chance of Thunder (%) 0 0 20 0
Temp (24h trend) 60 (+3) 91 (+8) 65 90
RH % (24h trend) 89 (-4) 34 (-11) 77 32
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 9 G18
Precip Amount 0.00 0.00 0.03 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 340 7720 380 7270
Transport Wnd (mph) SW 6 SW 14 W 9 W 18
Vent Rate (kt-ft) 1700 92640 3040 116320
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 10 11
Max ADI Early 58 Gen Good 53 Gen Good 44 Gen Good 111 Very Good
Max ADI Late 3 Very Poor 120 Very Good4 Very Poor 144 Very Good
Max LVORI Early 4 5 3 3
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Minimum RH 53 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 36 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows in the
upper 40s. Highs in the mid 60s. Minimum RH 55 percent. East
winds around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 67 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Minimum
RH 63 percent. South winds around 5 mph.
$$
PAZ025-180815-
Blair-
Including the city of Altoona
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type None None Tstms None
Chance Precip (%) 0 0 20 0
Chance of Thunder (%) 0 0 20 0
Temp (24h trend) 62 (+2) 92 (+9) 66 89
RH % (24h trend) 85 (-9) 35 (-13) 76 35
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G21
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G15 Lgt/Var SW 10 G22
Precip Amount 0.00 0.00 0.01 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 350 7360 390 6740
Transport Wnd (mph) SW 7 SW 17 W 9 W 21
Vent Rate (kt-ft) 2100 110400 3120 121320
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 63 Good 63 Good 67 Good 115 Very Good
Max ADI Late 3 Very Poor 136 Very Good5 Very Poor 114 Very Good
Max LVORI Early 4 4 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the upper 70s.
Minimum RH 51 percent. West winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 39 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 53 percent. East winds
5 to 10 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 67 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Minimum
RH 63 percent. South winds around 5 mph.
$$
PAZ024-180815-
Cambria-
Including the city of Johnstown
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type None None None None
Chance Precip (%) 0 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 62 (+3) 89 (+9) 66 86
RH % (24h trend) 82 (-15) 38 (-15) 74 39
20ftWnd-Val/AM(mph) Lgt/Var SW 7 G21
20ftWnd-Rdg/PM(mph) Lgt/Var SW 7 G15 SW 5 G14 SW 11 G22
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 350 6260 430 5920
Transport Wnd (mph) S 9 SW 18 SW 12 W 22
Vent Rate (kt-ft) 2800 100160 4300 112480
Dispersion 2 5 2 5
DSI 2 2
Sunshine Hours 12 10
Max ADI Early 54 Gen Good 73 Good 78 Good 63 Good
Max ADI Late 4 Very Poor 127 Very Good8 Poor 73 Good
Max LVORI Early 4 4 3 3
Max LVORI Late 4 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the mid 60s. Highs in the mid 70s. Minimum
RH 56 percent. Southwest winds around 10 mph.
.THURSDAY...Mostly cloudy. Lows in the mid 40s. Highs in the mid
60s. Minimum RH 43 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 56 percent. Southeast winds
5 to 10 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 67 percent. South winds
around 10 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the lower 70s.
Minimum RH 65 percent. South winds around 5 mph.
$$
PAZ011-180815-
Cameron-
Including the city of Emporium
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 59 (-2) 90 (+8) 65 87
RH % (24h trend) 91 (-8) 37 (-12) 78 41
20ftWnd-Val/AM(mph) Lgt/Var SW 5 G19
20ftWnd-Rdg/PM(mph) Lgt/Var SW 7 G17 Lgt/Var SW 9 G21
Precip Amount 0.02 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 340 6590 400 6010
Transport Wnd (mph) S 7 SW 22 SW 9 W 22
Vent Rate (kt-ft) 2040 125210 3200 114190
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 12 9
Max ADI Early 48 Gen Good 74 Good 78 Good 96 Good
Max ADI Late 4 Very Poor 153 Very Good5 Very Poor 124 Very Good
Max LVORI Early 5 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. A chance of showers. Lows in the mid
60s. Highs in the mid 70s. Minimum RH 48 percent. Southwest winds
around 5 mph.
.THURSDAY...Partly cloudy. Lows in the mid 40s. Highs in the
upper 60s. Minimum RH 37 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the upper 60s. Minimum RH 51 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 63 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 60 percent. South winds around
5 mph.
$$
PAZ017-180815-
Clearfield-
Including the cities of DuBois and Clearfield
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type None None None None
Chance Precip (%) 0 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 60 (-1) 90 (+9) 66 87
RH % (24h trend) 89 (-9) 36 (-15) 77 39
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G20
20ftWnd-Rdg/PM(mph) Lgt/Var SW 7 G17 Lgt/Var SW 11 G22
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 340 6530 410 5980
Transport Wnd (mph) S 8 SW 21 S 10 W 22
Vent Rate (kt-ft) 2380 117540 3690 113620
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 12 10
Max ADI Early 54 Gen Good 68 Good 87 Good 69 Good
Max ADI Late 4 Very Poor 141 Very Good6 Very Poor 78 Good
Max LVORI Early 4 4 3 3
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Highs in the mid 70s. Minimum
RH 49 percent. Southwest winds around 10 mph.
.THURSDAY...Mostly cloudy. Lows in the mid 40s. Highs in the mid
60s. Minimum RH 38 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the upper 60s. Minimum RH 51 percent. East winds
5 to 10 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 63 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 62 percent. South winds around
5 mph.
$$
PAZ053-180815-
Columbia-
Including the cities of Bloomsburg and Berwick
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type None None None None
Chance Precip (%) 0 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 62 (+4) 91 (+6) 65 90
RH % (24h trend) 88 (-10) 39 (-6) 79 38
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G12 Lgt/Var SW 6 G17
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 350 6400 370 7020
Transport Wnd (mph) S 5 SW 16 SW 7 W 18
Vent Rate (kt-ft) 1400 89600 2220 112320
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 42 Gen Good 29 Fair 48 Gen Good 69 Good
Max ADI Late 3 Very Poor 120 Very Good4 Very Poor 134 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the lower 80s. Minimum RH 53 percent.
Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 43 percent. North winds around
5 mph.
.FRIDAY...Partly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 51 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 63 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the lower 70s. Minimum RH 64 percent. East winds
around 5 mph.
$$
PAZ063-180815-
Cumberland-
Including the city of Carlisle
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 63 (+5) 93 (+7) 66 93
RH % (24h trend) 86 (-6) 35 (-11) 73 32
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 7 G16
Precip Amount 0.01 0.00 0.02 0.00
Precip Duration 0 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 380 7040 420 7350
Transport Wnd (mph) SW 6 S 15 SW 9 SW 16
Vent Rate (kt-ft) 1900 91520 3360 102900
Dispersion 1 5 2 5
DSI 3 2
Sunshine Hours 11 11
Max ADI Early 51 Gen Good 34 Fair 84 Good 94 Good
Max ADI Late 3 Very Poor 110 Very Good5 Very Poor 135 Very Good
Max LVORI Early 3 5 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the upper 80s. Minimum RH 50 percent.
Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 40 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 52 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 68 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 66 percent. East winds around
5 mph.
$$
PAZ057-180815-
Dauphin-
Including the cities of Harrisburg and Hershey
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 63 (+2) 93 (+7) 67 93
RH % (24h trend) 87 (-5) 36 (-8) 75 34
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 5 G14 S 5 G13 SW 8 G17
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 8 PM
Mixing Hgt(ft-agl) 360 6850 400 7760
Transport Wnd (mph) S 5 S 15 SW 7 W 16
Vent Rate (kt-ft) 1440 89050 2400 108640
Dispersion 1 5 2 5
DSI 3 2
Sunshine Hours 11 11
Max ADI Early 48 Gen Good 29 Fair 63 Good 85 Good
Max ADI Late 3 Very Poor 106 Very Good5 Very Poor 130 Very Good
Max LVORI Early 3 5 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the mid 80s. Minimum RH 51 percent. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 42 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 52 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 66 percent. East winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 65 percent. East winds around
5 mph.
$$
PAZ010-180815-
Elk-
Including the cities of St. Marys and Ridgway
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 60 (0) 88 (+8) 66 86
RH % (24h trend) 90 (-9) 39 (-15) 76 43
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G20
20ftWnd-Rdg/PM(mph) Lgt/Var SW 8 G17 SW 5 G15 SW 11 G22
Precip Amount 0.02 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 9 PM
Mixing Hgt(ft-agl) 370 5930 440 5840
Transport Wnd (mph) S 9 SW 23 SW 12 SW 23
Vent Rate (kt-ft) 2960 118600 4400 116800
Dispersion 2 5 2 5
DSI 2 2
Sunshine Hours 12 9
Max ADI Early 44 Gen Good 71 Good 82 Good 69 Good
Max ADI Late 4 Very Poor 149 Very Good6 Very Poor 79 Good
Max LVORI Early 5 4 3 3
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy with showers likely. Lows in the mid
60s. Highs in the lower 70s. Minimum RH 49 percent. Southwest
winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 40s. Highs in the
mid 60s. Minimum RH 38 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the upper 60s. Minimum RH 53 percent. East winds
5 to 10 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 65 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 62 percent. South winds around
5 mph.
$$
PAZ036-180815-
Franklin-
Including the city of Chambersburg
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 64 (+7) 92 (+7) 67 92
RH % (24h trend) 87 (-7) 37 (-12) 76 32
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 5 G14 Lgt/Var SW 7 G17
Precip Amount 0.01 0.00 0.04 0.00
Precip Duration 0 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 380 6340 400 7730
Transport Wnd (mph) SW 6 S 14 SW 8 SW 16
Vent Rate (kt-ft) 1900 76080 2800 108220
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 39 Fair 26 Fair 61 Good 85 Good
Max ADI Late 3 Very Poor 96 Good 5 Very Poor 138 Very Good
Max LVORI Early 4 5 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the mid 80s. Minimum RH 51 percent. Southwest
winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 39 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows around 50.
Highs in the upper 60s. Minimum RH 56 percent. East winds around
5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs around 70. Minimum RH 70 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Minimum
RH 66 percent. Southeast winds around 5 mph.
$$
PAZ035-180815-
Fulton-
Including the city of McConnellsburg
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 62 (+6) 92 (+7) 66 92
RH % (24h trend) 88 (-7) 35 (-11) 77 30
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 5 G13 Lgt/Var SW 6 G17
Precip Amount 0.01 0.00 0.04 0.00
Precip Duration 0 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 360 7600 370 8190
Transport Wnd (mph) SW 6 S 14 W 8 W 18
Vent Rate (kt-ft) 1800 91200 2590 131040
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 10 11
Max ADI Early 43 Gen Good 37 Fair 62 Good 101 Very Good
Max ADI Late 3 Very Poor 122 Very Good4 Very Poor 158 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the mid 80s.
Minimum RH 52 percent. Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 37 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows around 50.
Highs in the upper 60s. Minimum RH 56 percent. East winds around
5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 69 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Minimum
RH 63 percent. South winds around 5 mph.
$$
PAZ026-180815-
Huntingdon-
Including the cities of Huntingdon and Mount Union
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 60 (+3) 92 (+7) 65 91
RH % (24h trend) 89 (-6) 34 (-12) 80 31
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 7 G18
Precip Amount 0.00 0.00 0.02 0.00
Precip Duration 0 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 340 7590 370 7640
Transport Wnd (mph) SW 6 SW 15 SW 8 W 20
Vent Rate (kt-ft) 1700 98670 2590 129880
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 53 Gen Good 41 Gen Good 66 Good 109 Very Good
Max ADI Late 3 Very Poor 130 Very Good4 Very Poor 158 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Minimum RH 48 percent. Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 37 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 52 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 66 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Minimum
RH 63 percent. South winds around 5 mph.
$$
PAZ028-180815-
Juniata-
Including the city of Mifflintown
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 30 0 30 0
Chance of Thunder (%) 20 0 30 0
Temp (24h trend) 62 (+2) 93 (+7) 66 93
RH % (24h trend) 90 (-4) 35 (-10) 78 32
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var Lgt/Var Lgt/Var SW 7 G17
Precip Amount 0.01 0.00 0.02 0.00
Precip Duration 1 1
Precip Begin 6 PM 6 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 350 7300 360 7990
Transport Wnd (mph) SW 6 SW 13 SW 8 W 18
Vent Rate (kt-ft) 1750 80300 2520 127840
Dispersion 1 5 1 5
DSI 3 3
Sunshine Hours 11 11
Max ADI Early 39 Fair 28 Fair 66 Good 98 Good
Max ADI Late 3 Very Poor 122 Very Good4 Very Poor 161 Very Good
Max LVORI Early 4 6 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the mid 80s.
Minimum RH 47 percent. Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 41 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 53 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 68 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 66 percent. East winds around
5 mph.
$$
PAZ066-180815-
Lancaster-
Including the city of Lancaster
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type None None None None
Chance Precip (%) 0 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 63 (+1) 91 (+4) 66 92
RH % (24h trend) 87 (-1) 39 (-6) 80 35
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 7 G16 S 8 G15 SW 9 G19
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 380 6170 430 7340
Transport Wnd (mph) SW 5 SW 10 SW 9 W 16
Vent Rate (kt-ft) 1520 55530 3440 102760
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 52 Gen Good 32 Fair 36 Fair 78 Good
Max ADI Late 4 Very Poor 82 Good 8 Poor 84 Good
Max LVORI Early 4 5 3 4
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the upper 80s. Minimum RH 45 percent. West
winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the mid 50s. Highs in
the upper 60s. Minimum RH 44 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows around 50.
Highs in the upper 60s. Minimum RH 53 percent. East winds 5 to
10 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 67 percent. East winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 68 percent. East winds around
5 mph.
$$
PAZ059-180815-
Lebanon-
Including the city of Lebanon
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type None None None None
Chance Precip (%) 0 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 62 (0) 93 (+6) 66 91
RH % (24h trend) 91 (-3) 39 (-6) 82 36
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 6 G15 S 7 G15 SW 9 G19
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 370 6270 410 7230
Transport Wnd (mph) SW 5 S 14 SW 7 SW 16
Vent Rate (kt-ft) 1480 75240 2460 101220
Dispersion 1 5 2 5
DSI 3 2
Sunshine Hours 11 10
Max ADI Early 46 Gen Good 28 Fair 50 Gen Good 79 Good
Max ADI Late 3 Very Poor 95 Good 6 Very Poor 81 Good
Max LVORI Early 4 6 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the upper 80s. Minimum RH 50 percent. West
winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 44 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 52 percent. East winds
5 to 10 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 66 percent. East winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 67 percent. East winds around
5 mph.
$$
PAZ005-180815-
McKean-
Including the city of Bradford
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None None Tstms
Chance Precip (%) 20 0 0 20
Chance of Thunder (%) 20 0 0 20
Temp (24h trend) 60 (+1) 88 (+8) 66 85
RH % (24h trend) 89 (-10) 37 (-15) 73 43
20ftWnd-Val/AM(mph) Lgt/Var SW 7 G19
20ftWnd-Rdg/PM(mph) Lgt/Var SW 9 G18 SW 5 G16 SW 11 G21
Precip Amount 0.03 0.00 0.00 0.00
Precip Duration 0 0
Precip Begin 6 PM 2 PM
Precip End 8 PM Continuing
Mixing Hgt(ft-agl) 390 6090 470 5740
Transport Wnd (mph) S 8 SW 25 SW 12 SW 23
Vent Rate (kt-ft) 2730 133980 4700 114800
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 12 8
Max ADI Early 45 Gen Good 84 Good 95 Good 60 Gen Good
Max ADI Late 5 Very Poor 160 Very Good8 Poor 75 Good
Max LVORI Early 5 4 3 3
Max LVORI Late 6 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely. Lows around 60. Highs
in the upper 60s. Minimum RH 49 percent. Southwest winds around
10 mph.
.THURSDAY...Partly cloudy. Lows around 40. Highs in the mid 60s.
Minimum RH 36 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. A chance of showers. Lows in the lower
40s. Highs in the mid 60s. Minimum RH 50 percent. Southeast winds
around 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers. Lows in the
upper 40s. Highs in the upper 60s. Minimum RH 63 percent.
Southeast winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the lower 70s. Minimum RH 60 percent. South winds
around 5 mph.
$$
PAZ027-180815-
Mifflin-
Including the city of Lewistown
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 30 0 20 0
Chance of Thunder (%) 30 0 20 0
Temp (24h trend) 61 (+1) 94 (+9) 65 93
RH % (24h trend) 92 (-3) 36 (-10) 81 34
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var Lgt/Var Lgt/Var SW 7 G18
Precip Amount 0.01 0.00 0.04 0.00
Precip Duration 1 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 9 PM
Mixing Hgt(ft-agl) 360 7440 370 7630
Transport Wnd (mph) SW 6 SW 14 SW 8 W 20
Vent Rate (kt-ft) 1800 89280 2590 129710
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 32 Fair 28 Fair 56 Gen Good 97 Good
Max ADI Late 3 Very Poor 121 Very Good4 Very Poor 155 Very Good
Max LVORI Early 4 6 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Minimum RH 49 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 40 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 53 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 68 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 65 percent. East winds around
5 mph.
$$
PAZ051-180815-
Montour-
Including the city of Danville
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type Showers None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 62 (+3) 91 (+5) 66 91
RH % (24h trend) 90 (-8) 37 (-7) 80 37
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G12 Lgt/Var SW 8 G18
Precip Amount 0.04 0.00 0.00 0.00
Precip Duration 0
Precip Begin 7 PM
Precip End 9 PM
Mixing Hgt(ft-agl) 360 6410 370 6970
Transport Wnd (mph) S 5 SW 15 SW 6 W 17
Vent Rate (kt-ft) 1440 83330 1850 104550
Dispersion 1 5 1 5
DSI 3 2
Sunshine Hours 11 11
Max ADI Early 45 Gen Good 25 Fair 46 Gen Good 62 Good
Max ADI Late 2 Very Poor 106 Very Good4 Very Poor 128 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the lower 80s. Minimum RH 50 percent. West
winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 41 percent. North winds around
5 mph.
.FRIDAY...Partly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 49 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 62 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 62 percent. East winds around
5 mph.
$$
PAZ018-180815-
Northern Centre-
Including the city of Philipsburg
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 61 (0) 89 (+7) 66 87
RH % (24h trend) 87 (-11) 36 (-12) 78 37
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G21
20ftWnd-Rdg/PM(mph) Lgt/Var SW 6 G15 Lgt/Var SW 10 G22
Precip Amount 0.01 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 9 PM
Mixing Hgt(ft-agl) 350 7020 390 6620
Transport Wnd (mph) SW 7 SW 18 W 9 W 22
Vent Rate (kt-ft) 2100 112320 3120 125780
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 10
Max ADI Early 57 Gen Good 61 Good 67 Good 108 Very Good
Max ADI Late 4 Very Poor 140 Very Good6 Very Poor 115 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the upper 70s.
Minimum RH 48 percent. West winds around 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the mid 40s. Highs in
the mid 60s. Minimum RH 38 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the mid 60s. Minimum RH 50 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 63 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 62 percent. South winds around
5 mph.
$$
PAZ012-180815-
Northern Clinton-
Including the city of Renovo
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 60 (-1) 90 (+7) 65 88
RH % (24h trend) 90 (-9) 36 (-10) 80 38
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 6 G16 Lgt/Var SW 8 G21
Precip Amount 0.01 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 330 6820 370 6730
Transport Wnd (mph) SW 6 SW 20 SW 9 W 21
Vent Rate (kt-ft) 1650 115940 2960 121140
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 10
Max ADI Early 53 Gen Good 48 Gen Good 55 Gen Good 95 Good
Max ADI Late 3 Very Poor 139 Very Good4 Very Poor 148 Very Good
Max LVORI Early 5 5 4 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. A chance of showers and
thunderstorms. Lows in the mid 60s. Highs in the mid 70s. Minimum
RH 47 percent. Southwest winds around 5 mph.
.THURSDAY...Partly cloudy. Cooler. Lows in the mid 40s. Highs in
the mid 60s. Minimum RH 37 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the mid 60s. Minimum RH 50 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 62 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the lower 70s. Minimum RH 60 percent. East winds
around 5 mph.
$$
PAZ041-180815-
Northern Lycoming-
Including the city of Trout Run
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 60 (0) 88 (+6) 64 87
RH % (24h trend) 89 (-7) 38 (-9) 81 39
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 6 G15 Lgt/Var SW 9 G20
Precip Amount 0.02 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 330 6450 350 6400
Transport Wnd (mph) SW 6 SW 18 SW 7 W 20
Vent Rate (kt-ft) 1650 103200 2100 108800
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 56 Gen Good 36 Fair 45 Gen Good 78 Good
Max ADI Late 3 Very Poor 128 Very Good4 Very Poor 86 Good
Max LVORI Early 5 5 4 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the mid 60s. Highs in the mid 70s. Minimum
RH 51 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Cooler. Lows in the mid 40s. Highs in
the lower 60s. Minimum RH 44 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the lower 60s. Minimum RH 57 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 68 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs around 70. Minimum RH 66 percent. East winds around
5 mph.
$$
PAZ052-180815-
Northumberland-
Including the cities of Sunbury and Shamokin
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type Showers None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 62 (+3) 92 (+7) 66 91
RH % (24h trend) 89 (-8) 38 (-7) 79 36
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 7 G17
Precip Amount 0.02 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 9 PM
Mixing Hgt(ft-agl) 350 6500 380 7320
Transport Wnd (mph) S 5 SW 16 SW 7 W 17
Vent Rate (kt-ft) 1400 91000 2280 109800
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 47 Gen Good 30 Fair 68 Good 79 Good
Max ADI Late 3 Very Poor 113 Very Good4 Very Poor 133 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the lower 80s. Minimum RH 52 percent.
Southwest winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows around 50. Highs in the
mid 60s. Minimum RH 43 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 51 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 64 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 64 percent. East winds around
5 mph.
$$
PAZ056-180815-
Perry-
Including the city of Newport
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 63 (+4) 93 (+7) 67 93
RH % (24h trend) 88 (-5) 35 (-10) 75 33
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 5 G14 Lgt/Var SW 7 G17
Precip Amount 0.01 0.00 0.01 0.00
Precip Duration 0 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 350 6890 380 8150
Transport Wnd (mph) SW 6 S 15 SW 8 W 18
Vent Rate (kt-ft) 1750 89570 2660 130400
Dispersion 1 5 1 5
DSI 3 3
Sunshine Hours 11 11
Max ADI Early 49 Gen Good 40 Fair 84 Good 98 Good
Max ADI Late 3 Very Poor 113 Very Good4 Very Poor 154 Very Good
Max LVORI Early 4 5 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the mid 80s. Minimum RH 49 percent. Southwest
winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 50s. Highs
in the upper 60s. Minimum RH 41 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 53 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 68 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 66 percent. East winds around
5 mph.
$$
PAZ006-180815-
Potter-
Including the city of Coudersport
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 59 (0) 87 (+7) 65 84
RH % (24h trend) 91 (-8) 38 (-13) 79 43
20ftWnd-Val/AM(mph) Lgt/Var SW 7 G20
20ftWnd-Rdg/PM(mph) Lgt/Var SW 8 G18 SW 6 G16 SW 11 G21
Precip Amount 0.03 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 350 6220 410 5910
Transport Wnd (mph) SW 7 SW 23 SW 10 W 22
Vent Rate (kt-ft) 2100 124400 3690 112290
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 12 10
Max ADI Early 47 Gen Good 82 Good 68 Good 62 Good
Max ADI Late 4 Very Poor 152 Very Good7 Poor 76 Good
Max LVORI Early 5 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. A chance of showers. Lows in the
lower 60s. Highs around 70. Minimum RH 50 percent. Southwest
winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 40s. Highs in the
lower 60s. Minimum RH 40 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the lower
40s. Highs in the mid 60s. Minimum RH 54 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers. Lows in the
upper 40s. Highs in the mid 60s. Minimum RH 66 percent. South
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs around 70. Minimum RH 64 percent. South winds around
5 mph.
$$
PAZ058-180815-
Schuylkill-
Including the city of Pottsville
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type None None None None
Chance Precip (%) 0 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 62 (+3) 90 (+6) 65 90
RH % (24h trend) 87 (-9) 40 (-6) 79 40
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var Lgt/Var Lgt/Var SW 6 G17
Precip Amount 0.00 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 350 5920 400 7040
Transport Wnd (mph) SW 5 S 15 W 8 W 18
Vent Rate (kt-ft) 1400 76960 2800 112640
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 57 Gen Good 43 Gen Good 57 Gen Good 80 Good
Max ADI Late 3 Very Poor 102 Very Good5 Very Poor 140 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 60s. Highs in the mid 80s. Minimum RH 54 percent. Southwest
winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the mid 60s. Minimum RH 45 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 53 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 67 percent. East winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the lower 70s. Minimum RH 68 percent. Northeast
winds around 5 mph.
$$
PAZ050-180815-
Snyder-
Including the city of Selinsgrove
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 62 (+2) 91 (+6) 66 91
RH % (24h trend) 90 (-5) 38 (-9) 79 36
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 8 G18
Precip Amount 0.02 0.00 0.01 0.00
Precip Duration 0 0
Precip Begin 6 PM 6 PM
Precip End 8 PM 8 PM
Mixing Hgt(ft-agl) 350 6640 380 7630
Transport Wnd (mph) SW 5 S 15 SW 8 W 18
Vent Rate (kt-ft) 1400 86320 2660 122080
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 43 Gen Good 28 Fair 65 Good 84 Good
Max ADI Late 3 Very Poor 111 Very Good4 Very Poor 146 Very Good
Max LVORI Early 4 6 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. A chance of showers and
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Minimum RH 49 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows around 50. Highs in the
mid 60s. Minimum RH 45 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 54 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 69 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 67 percent. East winds around
5 mph.
$$
PAZ033-180815-
Somerset-
Including the city of Somerset
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type None None Tstms None
Chance Precip (%) 0 0 20 0
Chance of Thunder (%) 0 0 20 0
Temp (24h trend) 60 (+3) 87 (+8) 66 85
RH % (24h trend) 83 (-13) 41 (-12) 75 40
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G19
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G14 Lgt/Var SW 10 G19
Precip Amount 0.00 0.00 0.01 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 350 6450 420 5930
Transport Wnd (mph) SW 9 SW 17 SW 12 SW 21
Vent Rate (kt-ft) 2800 96750 4200 106740
Dispersion 2 5 2 5
DSI 2 2
Sunshine Hours 12 10
Max ADI Early 50 Gen Good 73 Good 53 Gen Good 80 Good
Max ADI Late 4 Very Poor 118 Very Good6 Very Poor 77 Good
Max LVORI Early 4 4 3 3
Max LVORI Late 4 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the mid 60s. Highs in the mid 70s. Minimum
RH 63 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the mid 60s. Minimum RH 46 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 62 percent. Southeast winds
5 to 10 mph.
.SATURDAY...Showers. Lows in the lower 50s. Highs in the upper
60s. Minimum RH 74 percent. South winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 50s. Highs in the lower 70s.
Minimum RH 70 percent. South winds around 5 mph.
$$
PAZ019-180815-
Southern Centre-
Including the city of State College
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 62 (+1) 91 (+8) 66 89
RH % (24h trend) 88 (-7) 38 (-10) 78 37
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G14 Lgt/Var SW 9 G19
Precip Amount 0.01 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 8 PM
Mixing Hgt(ft-agl) 340 7220 370 7240
Transport Wnd (mph) SW 6 SW 16 SW 9 W 20
Vent Rate (kt-ft) 1700 101080 2960 123080
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 51 Gen Good 41 Gen Good 55 Gen Good 98 Good
Max ADI Late 3 Very Poor 130 Very Good4 Very Poor 110 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs around 80. Minimum RH
48 percent. West winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 41 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 52 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 66 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 64 percent. Southeast winds
around 5 mph.
$$
PAZ045-180815-
Southern Clinton-
Including the city of Lock Haven
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Mclear Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 62 (0) 91 (+7) 66 89
RH % (24h trend) 89 (-8) 37 (-9) 79 37
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G14 Lgt/Var SW 9 G19
Precip Amount 0.01 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 350 6900 360 7160
Transport Wnd (mph) SW 6 SW 17 SW 8 W 20
Vent Rate (kt-ft) 1750 103500 2520 121720
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 10
Max ADI Early 28 Fair 43 Gen Good 46 Gen Good 88 Good
Max ADI Late 3 Very Poor 132 Very Good4 Very Poor 154 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs around 80. Minimum RH
48 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 40 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the upper 60s. Minimum RH 51 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 63 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 62 percent. East winds around
5 mph.
$$
PAZ046-180815-
Southern Lycoming-
Including the city of Williamsport
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Showers None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 61 (+2) 90 (+5) 64 90
RH % (24h trend) 91 (-4) 40 (-5) 84 38
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 9 G18
Precip Amount 0.03 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 340 6670 350 6870
Transport Wnd (mph) S 5 SW 17 SW 6 W 18
Vent Rate (kt-ft) 1360 100050 1750 109920
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 10 10
Max ADI Early 35 Fair 24 Fair 33 Fair 65 Good
Max ADI Late 2 Very Poor 117 Very Good3 Very Poor 112 Very Good
Max LVORI Early 5 6 3 5
Max LVORI Late 6 1 5 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs around 80. Minimum RH
48 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the mid 60s. Minimum RH 42 percent. North winds 5 to 10 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the mid 60s. Minimum RH 52 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows around 50.
Highs in the upper 60s. Minimum RH 64 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the lower 70s. Minimum RH 63 percent. East winds
around 5 mph.
$$
PAZ042-180815-
Sullivan-
Including the city of Laporte
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Showers None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 61 (+5) 87 (+6) 64 86
RH % (24h trend) 88 (-11) 45 (-4) 81 44
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 6 G15 Lgt/Var SW 8 G20
Precip Amount 0.04 0.00 0.00 0.00
Precip Duration 0
Precip Begin 7 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 330 5530 370 5840
Transport Wnd (mph) SW 7 SW 20 SW 9 W 20
Vent Rate (kt-ft) 1980 94010 2960 99280
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 60 Gen Good 40 Fair 56 Gen Good 69 Good
Max ADI Late 4 Very Poor 120 Very Good5 Very Poor 127 Very Good
Max LVORI Early 5 5 3 4
Max LVORI Late 5 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
mid 60s. Highs in the mid 70s. Minimum RH 56 percent. Southwest
winds around 5 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the lower 40s. Highs
in the lower 60s. Minimum RH 49 percent. North winds 5 to 10 mph.
.FRIDAY...Partly cloudy. A chance of showers. Lows in the lower
40s. Highs in the lower 60s. Minimum RH 59 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the upper
40s. Highs in the mid 60s. Minimum RH 71 percent. Southeast winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 70 percent. Southeast
winds around 5 mph.
$$
PAZ037-180815-
Tioga-
Including the cities of Mansfield and Wellsboro
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 59 (+1) 88 (+7) 64 85
RH % (24h trend) 89 (-7) 39 (-9) 78 42
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G19
20ftWnd-Rdg/PM(mph) Lgt/Var SW 8 G16 SW 5 G14 SW 10 G20
Precip Amount 0.03 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 10 PM
Mixing Hgt(ft-agl) 350 6190 410 5920
Transport Wnd (mph) SW 8 SW 21 SW 10 W 22
Vent Rate (kt-ft) 2450 111420 3690 112480
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 10
Max ADI Early 60 Gen Good 62 Good 62 Good 96 Good
Max ADI Late 4 Very Poor 141 Very Good6 Very Poor 97 Good
Max LVORI Early 5 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the mid 60s. Highs in the lower 70s.
Minimum RH 51 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Cooler. Lows in the lower 40s. Highs
around 60. Minimum RH 46 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the lower
40s. Highs in the lower 60s. Minimum RH 55 percent. Southeast
winds around 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers. Lows in the
upper 40s. Highs in the mid 60s. Minimum RH 67 percent. South
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 65 percent. South winds
around 5 mph.
$$
PAZ049-180815-
Union-
Including the city of Lewisburg
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Mclear
Precip Type Tstms None None None
Chance Precip (%) 20 0 0 0
Chance of Thunder (%) 20 0 0 0
Temp (24h trend) 62 (+2) 91 (+6) 65 90
RH % (24h trend) 89 (-8) 39 (-7) 80 37
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var SW 5 G13 Lgt/Var SW 8 G19
Precip Amount 0.02 0.00 0.00 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 9 PM
Mixing Hgt(ft-agl) 350 6720 360 7250
Transport Wnd (mph) SW 6 SW 16 W 8 W 18
Vent Rate (kt-ft) 1750 94080 2520 116000
Dispersion 1 5 1 5
DSI 2 2
Sunshine Hours 11 10
Max ADI Early 45 Gen Good 33 Fair 50 Gen Good 84 Good
Max ADI Late 3 Very Poor 123 Very Good4 Very Poor 139 Very Good
Max LVORI Early 4 5 3 4
Max LVORI Late 6 1 4 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Minimum RH 48 percent. West winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Cooler. Lows in the upper 40s. Highs
in the upper 60s. Minimum RH 43 percent. North winds around
5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the upper
40s. Highs in the upper 60s. Minimum RH 52 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 65 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the lower 70s. Minimum RH 64 percent. East winds around
5 mph.
$$
PAZ004-180815-
Warren-
Including the city of Warren
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Pcldy Pcldy
Precip Type Tstms None None Tstms
Chance Precip (%) 30 0 0 30
Chance of Thunder (%) 30 0 0 20
Temp (24h trend) 62 (+2) 87 (+7) 67 86
RH % (24h trend) 88 (-12) 40 (-16) 73 44
20ftWnd-Val/AM(mph) Lgt/Var SW 6 G19
20ftWnd-Rdg/PM(mph) Lgt/Var SW 8 G18 SW 5 G16 SW 10 G22
Precip Amount 0.01 0.00 0.00 0.00
Precip Duration 1 1
Precip Begin 6 PM 2 PM
Precip End 8 PM Continuing
Mixing Hgt(ft-agl) 390 5990 460 5250
Transport Wnd (mph) S 8 SW 24 SW 12 SW 23
Vent Rate (kt-ft) 2730 125790 4600 105000
Dispersion 2 5 3 5
DSI 2 2
Sunshine Hours 12 7
Max ADI Early 40 Fair 68 Good 86 Good 82 Good
Max ADI Late 5 Very Poor 161 Very Good8 Poor 86 Good
Max LVORI Early 5 4 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows in the
upper 50s. Highs in the mid 60s. Minimum RH 50 percent. West
winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the lower 40s. Highs in the
mid 60s. Minimum RH 39 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers. Lows in the mid
40s. Highs in the upper 60s. Minimum RH 51 percent. East winds
around 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers. Lows in the
lower 50s. Highs around 70. Minimum RH 65 percent. Southeast
winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 61 percent. South winds around
5 mph.
$$
PAZ065-180815-
York-
Including the city of York
223 PM EDT Sun May 17 2026
Tonight Mon Mon Night Tue
Cloud Cover Pcldy Mclear Mclear Mclear
Precip Type Tstms None Tstms None
Chance Precip (%) 20 0 20 0
Chance of Thunder (%) 20 0 20 0
Temp (24h trend) 64 (+4) 92 (+6) 68 92
RH % (24h trend) 87 (-3) 38 (-9) 76 34
20ftWnd-Val/AM(mph) Lgt/Var Lgt/Var
20ftWnd-Rdg/PM(mph) Lgt/Var S 5 G15 S 6 G15 SW 8 G16
Precip Amount 0.00 0.00 0.03 0.00
Precip Duration 0 0
Precip Begin 6 PM 8 PM
Precip End 8 PM 10 PM
Mixing Hgt(ft-agl) 390 7150 440 8000
Transport Wnd (mph) SW 6 S 14 SW 10 SW 17
Vent Rate (kt-ft) 1950 85800 3960 120000
Dispersion 1 5 2 5
DSI 2 2
Sunshine Hours 11 11
Max ADI Early 57 Gen Good 36 Fair 76 Good 84 Good
Max ADI Late 4 Very Poor 103 Very Good7 Poor 142 Very Good
Max LVORI Early 4 5 3 3
Max LVORI Late 5 1 3 1
Remarks: ADI is Atmospheric Dispersion Index by Lavdas.
LVORI is Low Visibility Occurrence Risk Index.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Showers and a chance of thunderstorms. Lows around
70. Highs in the upper 80s. Minimum RH 46 percent. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Much cooler. Lows in the mid 50s.
Highs in the upper 60s. Minimum RH 44 percent. North winds 5 to
10 mph.
.FRIDAY...Mostly cloudy with a chance of showers. Lows in the
lower 50s. Highs in the upper 60s. Minimum RH 55 percent. East
winds around 5 mph.
.SATURDAY...Mostly cloudy with showers likely. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 68 percent. East winds
around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Lows in the mid 50s.
Highs in the mid 70s. Minimum RH 68 percent. East winds around
5 mph.
$$
.OUTLOOK 8 TO 14 DAYS...
Temperatures above normal. Precipitation near normal.
$$