Suppression Forecast
Issued by NWS Pittsburgh, PA

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FNUS71 KPBZ 220617
FWSPBZ

Spot Forecast for SGL 039...PA Game Commission
National Weather Service Pittsburgh PA
217 AM EDT Tue Jul 22 2025

Forecast is based on ignition time of 0500 EDT on July 22.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
Dry weather is expected today under high pressure. After early
morning RH readings from 85 to 90 percent, dry air aloft is
expected to mix down through the day. This should result in
minimum RH levels around 40 percent this afternoon, under light
E-NE wind. Dry weather and clear skies are expected tonight, as
RH levels recover to between 90 and 95 percent.


.REST OF TONIGHT...

Sky/weather.........Mostly clear (0-10 percent).
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 52.
Max humidity........86 percent.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....East around 7 mph.
LVORI...............5.
ADI.................3.

TIME (EDT)      5AM
Sky (%).........7
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0
Chc of thdr (%).0
Temp............54
RH..............85
20 FT wind dir..NE
20 FT wind spd..2
20 FT wind gust.6
Mix hgt (kft)...0.4
Transp wind dir.E
Transp wind spd.7
LVORI...........5
ADI.............3

.TODAY...

Sky/weather.........Sunny (0-10 percent).
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 80.
Min humidity........40 percent.
Wind (20 ft)........Light winds.
Mixing height.......4700 ft AGL.
Transport winds.....East 3 to 9 mph.
LVORI...............4.
ADI.................7 to 27.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   5   2   0   0   0   2   2   5   2   6   1
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............53  54  58  63  67  70  73  75  77  78  79  78
RH..............84  86  79  71  64  60  52  48  45  43  42  43
20 FT wind dir..NE  NE  E   E   E   E   E   E   E   E   E   E
20 FT wind spd..2   2   3   3   3   3   3   2   2   2   2   2
20 FT wind gust.6   6   7   6   6   6   6   6   6   5   5   5
Mix hgt (kft)...0.4 0.4 0.8 1.2 2.0 2.8 3.5 4.0 4.3 4.4 4.7 4.6
Transp wind dir.E   E   E   E   E   E   E   E   E   NE  NE  NE
Transp wind spd.7   8   9   9   7   6   5   5   5   5   5   3
LVORI...........4   5   4   3   2   2   2   2   2   2   2   2
ADI.............7   8   9   14  18  21  21  24  25  25  27  20

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 58.
Max humidity........93 percent.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....East 3 to 7 mph shifting to the southeast 7 to
                    8 mph overnight.
LVORI...............4.
ADI.................2 to 4.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........10  8   17  14  4   9   17  16  13  11  3   14
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............78  76  73  69  66  64  62  61  60  59  59  58
RH..............46  53  62  67  77  78  81  83  87  88  88  91
20 FT wind dir..E   E   NE  E   E   E   E   SE  SE  SE  SE  E
20 FT wind spd..2   1   1   2   2   2   2   2   2   2   2   2
20 FT wind gust.5   5   5   5   5   5   6   6   6   6   6   6
Mix hgt (kft)...3.9 1.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NE  E   NE  NE  E   E   E   SE  SE  SE  SE  SE
Transp wind spd.3   5   3   5   7   7   7   7   8   8   8   7
LVORI...........2   2   3   3   4   4   5   5   6   6   6   6
ADI.............2   2   2   2   3   3   3   3   4   4   4   3

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent).
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Max temperature.....Around 86.
Min humidity........53 percent.
Wind (20 ft)........Light winds.
Mixing height.......5300 ft AGL.
Transport winds.....South 8 to 10 mph.
LVORI...............4.
ADI.................8 early in the morning increasing to 61 in the
                    afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........12  6   14  8   14  20  24  27  31  28  26  23
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............59  59  64  68  73  77  79  81  83  84  84  85
RH..............90  93  86  80  74  67  63  59  56  55  54  53
20 FT wind dir..SE  SE  SE  SE  SE  SE  S   S   S   S   S   S
20 FT wind spd..2   3   3   3   4   4   4   4   4   4   4   3
20 FT wind gust.6   7   7   7   7   7   7   7   8   8   8   8
Mix hgt (kft)...0.4 0.4 0.6 1.2 1.9 2.6 3.3 3.9 4.4 5.0 5.3 5.1
Transp wind dir.SE  SE  SE  SE  S   S   S   S   S   S   S   S
Transp wind spd.8   9   8   10  10  9   9   10  10  10  9   8
LVORI...........5   6   5   3   3   3   1   1   1   1   1   1
ADI.............8   9   8   16  25  31  40  50  57  61  59  51

$$
Forecaster...WM
Requested by...Shawn Perkins
Type of request...PRESCRIBED
.TAG 2518354.0/PBZ
.DELDT 07/22/25
.FormatterVersion 2.0.0
.EMAIL shperkins@pa.gov