299
FNUS71 KPHI 231000
FWSPHI
SPOT FORECAST FOR TREXLER NATURE PRESERVE...PA GAME COMMISSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
600 AM EDT THU APR 23 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON APRIL 23.
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 BUILDS INTO THE AREA TODAY WHICH IS FOLLOWED BY A BACK
DOOR COLD FRONT WHICH SINKS SOUTH ACROSS THE REGION TOMORROW. AN
AREA OF LOW PRESSURE TRACKS THROUGH THE REGION OVER THE WEEKEND WITH
HIGH PRESSURE RETURNING BY MONDAY. ANOTHER FRONTAL SYSTEM TRACKS
THROUGH THE AREA AROUND THE MIDDLE OF NEXT WEEK.
FOR TODAY, WINDS TURN TO THE WEST-NORTHWEST AND WILL INCREASE TO 10
TO 15 MPH WITH GUSTS UP TO 25 MPH IN THE AFTERNOON. SURFACE DEW
POINTS WILL START OUT CLOSE TO 50, THEN WILL MIX DOWN TO THE LOW 40S
AND EVEN UPPER 30S WITH EFFICIENT MIXING. THIS RESULTS IN MINRH
VALUES FROM 25 TO 35 PERCENT AWAY FROM THE COASTS.
REST OF TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........35 PERCENT.
WIND SHIFT..........NONE
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 7 TO 15 MPH INCREASING TO 17 TO 18
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (6100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (95300 KNOT-FT) IN THE
AFTERNOON.
ADI.................9 EARLY IN THE MORNING INCREASING TO 96 IN THE
AFTERNOON.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........32 21 8 21 20 14 20 26 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0
TEMP............54 61 65 68 69 71 72 72 72
RH..............83 67 56 47 42 36 35 37 37
20 FT WIND DIR..N NW NW NW NW NW NW NW NW
20 FT WIND SPD..6 7 9 10 12 13 13 12 12
20 FT WIND GUST.10 13 16 18 20 22 21 21 21
MIX HGT (KFT)...1.0 2.2 3.8 4.8 5.4 5.7 5.9 6.0 5.5
TRANSP WIND DIR.NW NW N N N NW NW NW NW
TRANSP WIND SPD.7 10 15 17 17 17 18 18 17
ADI.............9 29 69 96 74 75 82 82 75
VRATE KT-FT/1K..6 20 50 72 81 85 95 95 83
VENTRATE CAT....PR PR FR GD GD GD GD GD GD
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT).
CWR.................10 PERCENT.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........76 PERCENT.
WIND SHIFT..........NONE
WIND (20 FT)........NORTH WINDS 5 TO 9 MPH IN THE EVENING AND
OVERNIGHT BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTH 7 TO 16 MPH DECREASING TO 3 TO 5 MPH
OVERNIGHT.
SMOKE DISPERSAL.....GOOD (58800 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (1300 KNOT-FT) LATE IN THE
NIGHT.
ADI.................80 EARLY IN THE EVENING DECREASING TO 2 LATE IN
THE NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........5 24 40 51 58 64 73 51 58 66 61 78
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 10
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 10
TEMP............70 69 65 61 57 55 54 52 51 50 48 48
RH..............38 37 40 44 49 51 52 56 59 61 65 68
20 FT WIND DIR..NW NW NW N N N N N N N N N
20 FT WIND SPD..10 9 8 7 6 6 5 5 5 3 2 2
20 FT WIND GUST.18 16 15 13 13 12 10 8 7 6 5 5
MIX HGT (KFT)...4.2 0.6 0.5 0.6 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4
TRANSP WIND DIR.N N N N N NE N N N N N N
TRANSP WIND SPD.16 10 10 12 10 9 7 5 5 3 3 3
ADI.............80 7 7 8 7 6 5 3 3 2 2 2
VRATE KT-FT/1K..59 6 5 6 5 4 3 2 2 1 1 1
VENTRATE CAT....FR PR PR PR PR PR PR PR PR PR PR PR
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
CWR.................10 PERCENT.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........45 PERCENT.
WIND SHIFT..........NONE
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......4100 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 3 MPH SHIFTING TO THE NORTHWEST.
SMOKE DISPERSAL.....POOR (1300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (24400 KNOT-FT) IN THE
AFTERNOON.
ADI.................2 TO 36.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........77 77 70 56 54 52 47 42 37 36 34 33
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10
TEMP............48 47 50 52 56 59 62 64 65 66 66 66
RH..............68 76 66 63 55 49 46 45 45 45 45 47
20 FT WIND DIR..NE NE NE NE NE N N NW W W W W
20 FT WIND SPD..2 2 2 2 2 2 2 3 3 3 3 3
20 FT WIND GUST.5 5 6 5 5 6 7 8 9 9 9 8
MIX HGT (KFT)...0.4 0.4 0.6 1.2 1.7 1.9 2.8 3.4 4.1 3.8 3.6 3.4
TRANSP WIND DIR.N N NE N N N NW NW NW NW NW NW
TRANSP WIND SPD.3 3 3 5 5 3 5 6 7 7 8 8
ADI.............2 3 4 7 10 9 16 25 36 36 35 35
VRATE KT-FT/1K..1 1 2 5 7 6 11 17 24 24 24 24
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
FORECASTER...RCM
REQUESTED BY...STEVE FERRERI
TYPE OF REQUEST...PRESCRIBED
.TAG 2611455.0/PHI
.DELDT 04/23/26
.FORMATTERVERSION 2.0.0
.EMAIL AFERRERI@PA.GOV
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