373
FNUS71 KPHI 181203
FWSPHI

Spot Forecast for Beltzville WMA...Pa Game Commission
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
803 AM EDT Tue Aug 18 2026

Forecast is based on ignition time of 0800 EDT on August 18.
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office if you have questions or concerns with
this forecast.

.DISCUSSION...
High pressure will remain mostly in control through Wednesday. A cold
front will begin to approach the region on Thursday causing showers
and thunderstorms. Unsettled conditions may continue through the
weekend as a series of lows pass by. High pressure returns by early
next week.

.REST OF TODAY...

Sky/weather.........Mostly sunny. Patchy fog early in the morning.
CWR.................10 percent.
Chance of pcpn......10 percent.
Max temperature.....Around 85.
Min humidity........51 percent.
Wind shift..........None.
Wind (20 ft)........Light winds becoming northwest around 5 mph
                    late in the afternoon.
Mixing height.......5700 ft AGL.
Transport winds.....North 6 to 10 mph shifting to the west 8 to 10
                    mph late in the afternoon.
Smoke dispersal.....Poor (4400 knot-ft) early in the morning
                    increasing to good (45500 knot-ft) in the
                    afternoon.
ADI.................8 early in the morning increasing to 64 in the
                    afternoon.

TIME (EDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44  43  37  34  31  31  31  32  30  27
Weather cov.....PTY
Weather type....FOG
Tstm cov........
CWR.............0   0   0   0   0   0   10  10  10  10
Chc of pcpn (%).0   0   0   0   0   0   10  10  10  10
Temp............67  71  74  77  80  82  82  84  82  82
RH..............97  87  79  71  62  56  56  51  53  53
20 FT wind dir..N   N   N   N   NW  NW  NW  NW  NW  NW
20 FT wind spd..3   3   3   3   3   5   5   5   5   5
20 FT wind gust.8   8   9   9   10  10  10  10  10  9
Mix hgt (kft)...0.6 1.3 1.7 2.7 4.2 4.7 5.0 5.3 5.7 5.5
Transp wind dir.N   N   N   N   NW  NW  W   W   W   W
Transp wind spd.8   9   8   6   7   6   8   9   9   8
ADI.............8   15  18  20  37  34  50  61  64  55
Vrate kt-ft/1K..4   10  12  13  25  23  35  43  46  39
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  FR  FR  PR

.TONIGHT...

Sky/weather.........Mostly clear. Patchy fog after 3 am.
CWR.................0 percent.
Chance of pcpn......0 percent.
Min temperature.....Around 60.
Max humidity........96 percent.
Wind shift..........None.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 6 to 8 mph.
Smoke dispersal.....Fair (14600 knot-ft) early in the evening
                    decreasing to poor (2100 knot-ft) late in the
                    night.
ADI.................3 to 22.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........24  22  14  18  15  13  9   10  11  14  15  16
Weather cov.....                                    PTY PTY PTY
Weather type....                                    FOG FOG FOG
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............81  78  73  70  68  67  65  64  63  62  61  60
RH..............54  62  71  76  81  81  87  87  87  90  90  93
20 FT wind dir..NW  NW  NW  N   N   N   N   N   N   N   N   NW
20 FT wind spd..3   3   2   2   1   1   1   1   1   0   0   1
20 FT wind gust.8   6   6   3   3   3   2   2   2   2   2   2
Mix hgt (kft)...2.1 0.7 0.4 0.4 0.4 0.5 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NW  NW  NW  N   N   N   N   N   N   N   N   N
Transp wind spd.8   7   7   7   7   6   7   7   7   7   7   6
ADI.............22  3   3   3   3   3   3   3   3   3   3   3
Vrate kt-ft/1K..15  4   2   3   3   2   3   2   3   3   3   2
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.WEDNESDAY...

Sky/weather.........Sunny. Patchy fog early in the morning.
CWR.................0 percent.
Chance of pcpn......0 percent.
Max temperature.....Around 86.
Min humidity........48 percent.
Wind shift..........None.
Wind (20 ft)........Light winds becoming west 5 to 7 mph in the
                    afternoon.
Mixing height.......5600 ft AGL.
Transport winds.....Northwest 6 to 10 mph shifting to the west 10
                    to 13 mph late in the afternoon.
Smoke dispersal.....Poor (1700 knot-ft) early in the morning
                    increasing to excellent (62100 knot-ft) in the
                    afternoon.
ADI.................3 early in the morning increasing to 88 in the
                    afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........13  10  8   5   5   8   15  21  32  35  38  44
Weather cov.....PTY PTY PTY
Weather type....FOG FOG FOG
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............60  60  64  69  75  78  81  83  83  85  83  83
RH..............93  96  90  78  66  60  54  51  51  48  51  53
20 FT wind dir..N   N   N   N   W   W   W   W   W   W   W   W
20 FT wind spd..0   0   0   0   2   3   5   5   6   6   6   6
20 FT wind gust.2   1   2   3   7   9   10  12  13  13  13  13
Mix hgt (kft)...0.4 0.3 0.4 1.1 2.5 3.8 4.3 4.7 5.1 5.4 5.6 5.3
Transp wind dir.NW  NW  NW  NW  NW  W   W   W   W   W   W   W
Transp wind spd.6   6   6   7   8   10  10  10  10  12  13  12
ADI.............3   6   6   10  26  50  57  61  66  77  88  75
Vrate kt-ft/1K..2   2   2   7   18  34  39  42  46  54  62  53
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  FR  FR  FR  GD  FR

$$
Forecaster...DeSilva
Requested by...Philip Kasper
Type of request...PRESCRIBED
.TAG 2619905.0/PHI
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL pkasper@pa.gov,rygildea@pa.gov