047
FNUS71 KPHI 141345
FWSPHI
SPOT FORECAST FOR 2026 LARGE SCALE EVENTS (SEPA)...PA DCNR BOF
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
945 AM EDT SUN JUN 14 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 EDT ON JUNE 14.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS OR CONCERNS WITH
THIS FORECAST.
DISCUSSION
A STRONG COLD FRONT WILL CROSS OUR AREA TONIGHT FOLLOWED BY HIGH
PRESSURE BUILDING IN FOR MONDAY AND TUESDAY. A WEAK SYSTEM WITH
A WARM FRONT SHOULD CROSS THE AREA ON WEDNESDAY, FOLLOWED BY A
POTENTIALLY STRONG COLD FRONT LATER THURSDAY. HIGH PRESSURE SHOULD
THEN BUILD IN BY NEXT WEEKEND.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE
AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 91.
MIN HUMIDITY........40 PERCENT.
DEWPOINT............63.
SURFACE WINDS (MPH).SOUTH WINDS 5 TO 15 MPH.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 13 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
MIXING HEIGHT.......6200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 22 MPH.
SMOKE DISPERSAL.....FAIR (21600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (149500 KNOT-FT) IN THE
AFTERNOON.
ADI.................64 EARLY IN THE MORNING INCREASING TO 148 IN
THE AFTERNOON.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 43 41 53 69 72 73 82
WEATHER COV..... SCH
WEATHER TYPE.... RW
TSTM COV........ SCH
CHC OF PCPN (%).0 0 0 0 10 10 10 20
TEMP............83 87 89 90 90 91 91 90
DEWPOINT........63 64 64 64 64 64 64 64
RH..............52 47 43 42 42 40 41 42
20 FT WIND DIR..SW SW SW SW SW SW S S
20 FT WIND SPD..8 9 12 13 13 14 14 14
20 FT WIND GUST.13 16 20 21 22 23 24 24
SURFACE WND DIR.SW SW SW SW SW SW S S
SURFACE WND SPD.8 9 12 13 13 14 14 14
SURFACE WND GST.13 16 20 21 22 23 24 24
MIX HGT (KFT)...2.6 4.4 5.5 5.8 6.0 6.2 5.5 5.1
TRANSP WIND DIR.SW SW SW SW SW SW SW S
TRANSP WIND SPD.13 15 17 18 20 21 22 22
ADI.............64 97 121 126 142 148 112 108
VRATE KT-FT/1K..46 74 95 117 132 145 150 135
VENTRATE CAT....FR GD GD VGD VGD VGD VGD VGD
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS IN THE
EVENING.
CHANCE OF PCPN......80 PERCENT.
MIN TEMPERATURE.....AROUND 63.
MAX HUMIDITY........92 PERCENT.
DEWPOINT............66.
SURFACE WINDS (MPH).WEST WINDS 6 TO 14 MPH SHIFTING TO THE
NORTHWEST 6 TO 13 MPH OVERNIGHT.
WIND (20 FT)........SOUTH WINDS 5 TO 13 MPH SHIFTING TO THE NORTHWEST 8
TO 12 MPH EARLY IN THE MORNING. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 21 MPH SHIFTING TO THE
NORTHWEST AROUND 13 MPH AFTER 3 AM.
SMOKE DISPERSAL.....EXCELLENT (87700 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (5300 KNOT-FT) LATE IN THE
NIGHT.
ADI.................87 EARLY IN THE EVENING DECREASING TO 12 LATE
IN THE NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........78 74 84 88 91 90 90 81 87 67 57 50
WEATHER COV.....SCH CHC LKY LKY DEF LKY LKY CHC
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........SCH CHC CHC CHC CHC CHC CHC CHC
CHC OF PCPN (%).20 30 70 70 80 60 60 50 10 10 0 0
TEMP............88 85 80 77 75 74 73 72 71 69 68 66
DEWPOINT........64 65 66 68 69 70 70 69 68 67 65 63
RH..............46 52 62 73 82 87 91 91 90 90 90 90
20 FT WIND DIR..S S S S S S SW W W W NW NW
20 FT WIND SPD..14 14 13 12 9 9 8 8 9 10 12 13
20 FT WIND GUST.24 23 22 20 16 15 15 14 14 17 18 21
SURFACE WND DIR.S S S S S S SW W W W NW NW
SURFACE WND SPD.14 14 13 12 9 9 8 8 9 10 12 13
SURFACE WND GST.24 23 22 20 16 15 15 14 14 17 18 21
MIX HGT (KFT)...2.9 0.9 0.7 0.5 0.6 0.6 0.9 0.8 0.9 0.8 0.6 0.6
TRANSP WIND DIR.S S S S SW SW SW SW SW W NW NW
TRANSP WIND SPD.21 18 17 16 15 13 14 14 14 13 13 13
ADI.............87 26 16 15 15 15 17 18 17 12 14 15
VRATE KT-FT/1K..88 41 18 14 18 18 19 20 19 15 16 16
VENTRATE CAT....GD FR PR PR PR PR PR PR PR PR PR PR
MONDAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........44 PERCENT.
DEWPOINT............58 DECREASING TO 53 IN THE LATE MORNING AND
AFTERNOON.
SURFACE WINDS (MPH).NORTHWEST WINDS 9 TO 13 MPH.
WIND (20 FT)........NORTHWEST WINDS 8 TO 12 MPH.
MIXING HEIGHT.......5600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 14 TO 17 MPH.
SMOKE DISPERSAL.....POOR (6300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (91100 KNOT-FT) IN THE
AFTERNOON.
ADI.................17 EARLY IN THE MORNING INCREASING TO 116 IN
THE AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........34 27 28 23 21 21 12 10 24 19 19 20
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............63 63 64 67 69 71 72 73 74 75 76 76
DEWPOINT........60 58 57 55 54 53 53 52 52 52 52 52
RH..............89 85 77 67 60 54 50 48 46 44 43 43
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..13 13 12 12 12 12 12 12 12 12 12 10
20 FT WIND GUST.20 20 20 20 18 18 18 18 18 18 18 17
SURFACE WND DIR.NW NW NW NW NW NW NW NW NW NW NW NW
SURFACE WND SPD.13 13 12 12 12 12 12 12 12 12 12 10
SURFACE WND GST.20 20 20 20 18 18 18 18 18 18 18 17
MIX HGT (KFT)...0.8 1.6 2.1 2.5 3.3 3.9 4.5 5.0 5.2 5.5 5.6 5.6
TRANSP WIND DIR.NW N N N N NW NW NW NW W W W
TRANSP WIND SPD.14 16 17 16 16 15 15 15 15 16 16 16
ADI.............17 43 52 63 70 79 86 95 101 111 114 116
VRATE KT-FT/1K..20 30 36 44 50 58 64 73 80 87 91 91
VENTRATE CAT....PR PR PR FR FR FR GD GD GD GD GD GD
FORECASTER...DESILVA
REQUESTED BY...JAKE GLICK
TYPE OF REQUEST...OTHER
.TAG 2615482.0/PHI
.DELDT 06/14/26
.FORMATTERVERSION 2.0.0
.EMAIL JGLICK@PA.GOV
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