675
FNUS71 KPHI 230935
FWSPHI
SPOT FORECAST FOR BIG WOODS...PA GAME COMMISSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
535 AM EDT THU APR 23 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 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 (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH.
MIXING HEIGHT.......6300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 7 TO 16 MPH.
ADI.................14 EARLY IN THE MORNING INCREASING TO 103 IN
THE AFTERNOON.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........27 17 20 19 23 11 26 6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............63 68 70 72 74 74 74 75
RH..............70 59 51 43 37 35 37 36
20 FT WIND DIR..NW NW NW NW NW NW NW NW
20 FT WIND SPD..6 8 9 10 12 12 12 12
20 FT WIND GUST.10 15 16 18 22 22 21 21
MIX HGT (KFT)...1.6 3.1 4.8 5.7 6.0 6.3 6.3 6.2
TRANSP WIND DIR.NW NW NW N NW NW NW NW
TRANSP WIND SPD.7 10 14 16 15 16 16 16
ADI.............14 40 77 103 67 73 74 73
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT).
MIN TEMPERATURE.....AROUND 48.
MAX HUMIDITY........71 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 9 MPH BECOMING LIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTH 8 TO 15 MPH SHIFTING TO THE NORTHEAST 5
TO 9 MPH IN THE LATE EVENING AND OVERNIGHT.
ADI.................82 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 (%).........6 28 38 54 52 52 52 54 49 46 61 71
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............73 71 69 63 60 57 56 54 53 51 50 50
RH..............37 38 39 46 49 55 57 64 66 68 68 68
20 FT WIND DIR..NW NW NW N N N N N N N NE NE
20 FT WIND SPD..9 8 7 6 6 6 5 5 3 3 2 3
20 FT WIND GUST.17 15 13 10 10 10 9 8 7 6 5 6
MIX HGT (KFT)...4.7 0.9 0.6 0.5 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.NW NW N N NE NE NE NE E E NE NE
TRANSP WIND SPD.15 10 9 8 9 9 8 7 5 5 5 5
ADI.............82 7 4 5 6 6 5 5 2 2 2 2
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 3 MPH SHIFTING TO THE
NORTHWEST 3 TO 5 MPH IN THE AFTERNOON.
ADI.................2 TO 18.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........76 76 71 65 62 58 53 47 42 41 41 40
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............49 50 53 55 58 61 63 65 66 67 68 67
RH..............71 71 59 57 51 46 44 43 43 42 42 43
20 FT WIND DIR..NE NE E NE E E NE NW W W W W
20 FT WIND SPD..3 3 2 2 2 2 2 2 2 2 2 2
20 FT WIND GUST.6 6 5 5 5 6 7 7 7 7 7 7
MIX HGT (KFT)...0.5 0.5 0.7 1.0 1.6 1.9 2.4 2.7 3.0 3.0 2.9 2.9
TRANSP WIND DIR.NE NE NE NE N N N N NW NW NW NW
TRANSP WIND SPD.3 3 3 3 3 3 3 5 5 5 3 3
ADI.............2 3 4 4 7 8 10 14 18 16 14 13
FORECASTER...RCM
REQUESTED BY...JONATHAN WEAVER
TYPE OF REQUEST...PRESCRIBED
.TAG 2611452.0/PHI
.DELDT 04/23/26
.FORMATTERVERSION 2.0.0
.EMAIL JONWEAVER@PA.GOV
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