Suppression Forecast
Issued by NWS Mt. Holly, NJ
Issued by NWS Mt. Holly, NJ
484
FNUS71 KPHI 220643
FWSPHI
Spot Forecast for NASCAR Race Weekend at Pocono Raceway...Monroe County Office of Emergency Management
National Weather Service Mount Holly NJ
243 AM EDT Sun Jun 22 2025
Forecast is based on forecast start time of 0000 EDT on June 22.
If conditions become unrepresentative, contact the National Weather
Service.
Please contact our office if you have questions
or concerns with this forecast.
...HEAT ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT
TUESDAY...
.DISCUSSION...
Hot and dry high pressure across the western Atlantic will build
west into the Appalachian region early next week. This will
result in a significant heat wave for much of the eastern US
with near record breaking temperatures forecast. The high
pressure system will begin to weaken and retreat to the south by
the middle to end of the week, and temperatures will return
closer to normal along with increasing chances for showers and
storms.
.REST OF TONIGHT...
Sky/weather.........Partly cloudy (30-40 percent).
Chance of pcpn......0 percent.
Min temperature.....Around 67.
Max humidity........81 percent.
Dewpoint............62.
Surface winds (mph).West winds 5 to 9 mph. Gusts up to 21 mph
overnight.
Wind (20 ft)........Southwest winds 6 to 8 mph. Gusts up to 21 mph
overnight.
Mixing height.......200 ft AGL.
Transport winds.....Southwest 15 to 16 mph.
Smoke dispersal.....Poor (3100 knot-ft).
ADI.................7 to 11.
TIME (EDT) MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........46 37 25 25 29 25
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0
Temp............71 70 69 68 68 67
Dewpoint........63 63 61 61 61 61
RH..............76 78 76 78 78 81
20 FT wind dir..SW SW SW SW SW W
20 FT wind spd..5 7 8 9 9 9
20 FT wind gust.10 12 21 20 21 21
Surface wnd dir.SW SW SW SW SW W
Surface wnd spd.5 7 8 9 9 9
Surface wnd gst.10 12 21 20 21 21
Mix hgt (kft)...0.4 0.3 0.2 0.3 0.4 0.3
Transp wind dir.SW SW SW SW SW W
Transp wind spd.15 15 15 16 16 16
ADI.............10 7 10 11 11 11
Vrate kt-ft/1K..5 4 3 5 5 4
Ventrate Cat....PR PR PR PR PR PR
.TODAY...
Sky/weather.........Mostly sunny (45-55 percent). Slight chance of
showers and thunderstorms late in the morning and into the afternoon.
Chance of pcpn......20 percent.
Max temperature.....Around 88.
Min humidity........55 percent.
Dewpoint............67.
Surface winds (mph).West winds 9 to 10 mph with gusts to around 23
mph.
Wind (20 ft)........West winds 8 to 9 mph with gusts to around 23
mph. Gusty and erratic winds expected near
thunderstorms.
Mixing height.......3500 ft AGL.
Transport winds.....West 15 to 24 mph.
Smoke dispersal.....Poor (3400 knot-ft) early in the morning
increasing to good (53100 knot-ft) in the
afternoon.
ADI.................10 early in the morning increasing to 74 in the
afternoon.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........29 30 30 46 47 55 63 61 66 62 61 61
Weather cov..... SCH SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH SCH SCH
Chc of pcpn (%).0 0 0 0 10 20 20 20 20 20 20 10
Temp............67 69 71 74 77 79 81 83 85 86 86 87
Dewpoint........61 62 63 64 65 66 67 68 68 69 69 69
RH..............81 78 76 71 67 64 63 61 57 57 57 55
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..9 9 10 10 10 10 10 10 10 10 10 10
20 FT wind gust.21 21 22 22 23 22 22 21 21 21 20 20
Surface wnd dir.W W W W W W W W W W W W
Surface wnd spd.9 9 10 10 10 10 10 10 10 10 10 10
Surface wnd gst.21 21 22 22 23 22 22 21 21 21 20 20
Mix hgt (kft)...0.3 0.5 0.8 1.3 1.8 2.0 2.3 2.9 3.1 3.5 3.0 2.2
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.15 15 17 23 24 21 20 18 17 17 17 16
ADI.............10 16 18 40 55 52 58 67 66 74 64 45
Vrate kt-ft/1K..3 7 12 27 37 35 40 47 46 53 45 31
Ventrate Cat....PR PR PR PR PR PR PR FR FR FR FR PR
.TONIGHT...
Sky/weather.........Mostly cloudy (55-65 percent) then becoming
partly cloudy (30-40 percent).
Chance of pcpn......10 percent.
Min temperature.....Around 69.
Max humidity........100 percent.
Dewpoint............69.
Surface winds (mph).Northwest winds 5 to 9 mph.
Wind (20 ft)........Northwest winds 5 to 8 mph.
Mixing height.......200 ft AGL.
Transport winds.....Northwest 10 to 17 mph.
Smoke dispersal.....Fair (25700 knot-ft) early in the evening
decreasing to poor (1700 knot-ft) late in the
night.
ADI.................5 to 38.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........66 53 43 42 41 34 28 34 29 31 27 23
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10 10 10 10 0 0 0 0 0 0 0 0
Temp............85 84 82 78 76 75 75 73 71 71 71 70
Dewpoint........69 69 70 69 69 70 70 70 69 70 69 70
RH..............59 61 67 74 79 84 84 90 93 97 93 100
20 FT wind dir..W W W W W W W NW NW NW NW NW
20 FT wind spd..9 7 6 6 5 5 5 5 5 5 5 5
20 FT wind gust.17 15 14 13 13 12 12 12 12 12 12 12
Surface wnd dir.W W W W W W W NW NW NW NW NW
Surface wnd spd.9 7 6 6 5 5 5 5 5 5 5 5
Surface wnd gst.17 15 14 13 13 12 12 12 12 12 12 12
Mix hgt (kft)...1.7 0.6 0.3 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Transp wind dir.W NW W W NW W W W NW NW NW NW
Transp wind spd.17 16 13 13 13 12 12 12 10 13 13 13
ADI.............38 11 8 8 8 5 5 5 5 6 6 6
Vrate kt-ft/1K..26 9 4 3 3 2 2 2 2 2 2 2
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
$$
Forecaster...Hoeflich
Requested by...Maryellen Keegan
Type of request...OTHER
.TAG 2516136.5/PHI
.DELDT 06/22/25
.FormatterVersion 2.0.0
.EMAIL mkeegan1@monroecountypa.gov