Spot Forecast
Issued by NWS Pittsburgh, PA

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FNUS71 KPBZ 250802
FWSPBZ

Spot Forecast for RACR Doak...DCNR BSP
National Weather Service Pittsburgh PA
402 AM EDT Mon Mar 25 2024

Forecast is based on ignition time of 0500 EDT on March 25.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Dry and warmer today under high pressure. Rain chances return
Tuesday as an upper level disturbance swings through the region.

A very dry atmosphere will remain in place today. RH values may
drop into the upper teens to lower 20s over portions of the
region this afternoon. Surface winds will also strengthen this
afternoon. This will increase the fire weather threat as the
day progresses.

.REST OF TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 36.
Max humidity........57 percent.
Wind (20 ft)........East winds around 9 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southeast around 13 mph.
LVORI...............2.
ADI.................8.
Haines Index........5...or moderate potential for large plume
                    dominated fire growth.

TIME (EDT)      5AM
Sky (%).........17
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0
LAL.............1
Temp............37
RH..............46
20 FT wind dir..E
20 FT wind spd..9
20 FT wind gust.14
Mix hgt (kft)...0.5
Transp wind dir.SE
Transp wind spd.13
LVORI...........2
ADI.............8
Haines index....5

.TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 66.
Min humidity........27 percent.
Wind (20 ft)........Southeast winds 8 to 10 mph. Gusts up to 22 mph
                    late in the afternoon.
Mixing height.......3400 ft AGL.
Transport winds.....Southeast 9 to 17 mph increasing to 20 to 21
                    mph late in the afternoon.
LVORI...............2.
ADI.................7 early in the morning increasing to 70 in the
                    afternoon.
Haines Index........5...or moderate potential for large plume
                    dominated fire growth.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........23  28  34  37  39  42  45  47  50  46  41  37
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............36  36  37  43  49  54  58  61  63  65  66  65
RH..............47  50  49  41  32  26  24  22  21  21  21  21
20 FT wind dir..E   SE  E   SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..9   8   8   7   8   8   8   8   8   10  10  10
20 FT wind gust.14  12  12  14  14  14  14  14  16  17  17  18
Mix hgt (kft)...0.5 0.5 0.5 0.9 1.3 1.8 2.2 2.5 2.6 3.2 3.4 3.3
Transp wind dir.SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
Transp wind spd.13  10  9   13  14  15  15  15  17  20  20  21
LVORI...........2   3   3   2   2   1   1   1   1   1   1   1
ADI.............10  8   7   12  22  34  39  43  51  65  67  70
Haines index....5   5   5   5   5   5   5   5   5   5   5   5

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (65-75 percent).
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 42.
Max humidity........53 percent.
Wind (20 ft)........Southeast winds 13 to 16 mph with gusts to
                    around 22 mph.
Mixing height.......700 ft AGL.
Transport winds.....Southeast 17 to 22 mph.
LVORI...............2.
ADI.................15 to 29.
Haines Index........5...or moderate potential for large plume
                    dominated fire growth.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........33  28  24  40  31  44  36  55  62  72  82  86
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............64  60  55  52  49  47  46  45  45  44  44  43
RH..............22  26  31  35  39  42  45  47  47  49  48  48
20 FT wind dir..SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..11  11  12  13  13  13  13  12  12  12  12  12
20 FT wind gust.18  18  19  21  22  22  22  21  21  21  21  21
Mix hgt (kft)...2.7 0.9 0.9 0.8 0.8 0.8 0.7 0.8 0.8 0.8 0.8 0.8
Transp wind dir.SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
Transp wind spd.22  17  17  18  21  20  20  18  20  18  18  18
LVORI...........2   2   2   2   2   2   2   2   2   2   2   2
ADI.............29  15  15  16  19  18  18  16  18  16  16  16
Haines index....5   5   5   5   5   5   5   5   5   5   5   5

.TUESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Rain showers
                    early in the morning.
Chance of pcpn......90 percent.
LAL.................1.
Max temperature.....Around 57.
Min humidity........47 percent.
Wind (20 ft)........Southeast winds 10 to 14 mph with gusts to
                    around 19 mph.
Mixing height.......1600 ft AGL.
Transport winds.....Southeast 13 to 20 mph.
LVORI...............3.
ADI.................17 to 27.
Haines Index........4 to 5...or low to moderate potential for large
                    plume dominated fire growth.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........84  80  84  84  88  91  90  90  89  90  92  93
Weather cov.....        DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....        RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
Chc of pcpn (%).0   10  80  80  80  80  80  80  90  90  90  90
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............42  43  43  44  45  46  47  49  51  52  54  55
RH..............51  47  47  53  58  64  65  65  66  66  65  65
20 FT wind dir..SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..11  10  9   9   11  9   11  11  11  10  10  10
20 FT wind gust.19  18  18  17  17  17  16  16  17  16  16  16
Mix hgt (kft)...0.8 0.8 0.8 1.0 1.1 1.1 1.2 1.5 1.6 1.5 1.3 1.1
Transp wind dir.SE  SE  SE  SE  SE  SE  SE  SE  SE  S   S   S
Transp wind spd.17  16  17  20  18  16  16  16  16  15  14  13
LVORI...........2   2   2   2   2   2   3   3   3   3   3   3
ADI.............19  18  19  26  25  21  23  26  27  24  20  17
Haines index....5   5   5   5   5   5   5   5   4   4   4   4

$$
Forecaster...RRR
Requested by...Michael DiRinaldo
Type of request...PRESCRIBED
.TAG 2408321.0/PBZ
.DELDT 03/25/24
.FormatterVersion 2.0.0
.EMAIL mdirinaldo@pa.gov


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