058
FNUS71 KAKQ 310946
FWSAKQ
SPOT FORECAST FOR NASSAWANGO UNIT J7-10...THE NATURE CONSERVANCY
NATIONAL WEATHER SERVICE WAKEFIELD VA
546 AM EDT MON AUG 31 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON AUGUST 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE AT 757-899-5734.
DISCUSSION
HOT AND MOSTLY DRY THROUGH MID WEEK WITH ONLY ISOLATED CHANCES
FOR SHOWERS AND THUNDERSTORMS DURING THE LATE AFTERNOON-EVENING
HOURS. STORM CHANCES INCREASE LATE IN THE WEEK AHEAD OF A BACKDOOR
COLD FRONT.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). CHANCE OF SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE
AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........59 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......4400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 3 TO 5 MPH SHIFTING TO THE NORTH 2 TO
5 MPH LATE IN THE MORNING, THEN SHIFTING TO THE
WEST AROUND 3 MPH LATE IN THE AFTERNOON
SHIFTING TO THE SOUTHWEST AROUND 2 MPH LATE IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (5750 MPH-FT) EARLY IN THE MORNING
INCREASING TO FAIR (20355 MPH-FT) IN THE
AFTERNOON.
LVORI...............4.
ADI.................7 TO 18.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........55 50 45 49 53 57 57 57 57
WEATHER COV..... CHC CHC CHC SCH
WEATHER TYPE.... RW RW RW RW
TSTM COV........ CHC CHC CHC SCH
CHC OF PCPN (%).0 0 0 10 10 30 30 30 20
TEMP............77 82 83 86 87 87 88 87 86
RH..............87 74 70 63 61 61 59 61 63
20 FT WIND DIR..SW W W W W W SW S S
20 FT WIND SPD..2 3 3 3 4 4 4 4 4
20 FT WIND GUST.5 5 5 5 6 7 7 8 8
MIX HGT (KFT)...1.3 1.9 2.6 3.2 3.8 4.4 3.8 3.2 2.6
TRANSP WIND DIR.NW N N N NW NW W SW SW
TRANSP WIND SPD.5 3 2 3 3 5 3 2 2
LVORI...........5 3 3 2 2 2 2 3 3
ADI.............7 8 8 12 14 18 14 9 7
VRATE MPH-FT/1K.5 6 5 9 14 20 14 8 6
VENTRATE CAT....PR PR PR PR PR PR PR PR PR
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (45-55 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.
CHANCE OF PCPN......20 PERCENT.
MIN TEMPERATURE.....AROUND 73.
MAX HUMIDITY........97 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS EARLY IN THE EVENING.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH 3 TO 8 MPH.
SMOKE DISPERSAL.....POOR (2530 MPH-FT).
LVORI...............5.
ADI.................3 TO 9.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........51 45 39 39 39 39 40 41 41 39 37 35
WEATHER COV.....SCH SCH
WEATHER TYPE....RW RW
TSTM COV........SCH SCH
CHC OF PCPN (%).20 20 10 10 10 10 10 10 10 0 0 0
TEMP............85 82 79 77 76 75 75 75 75 75 75 75
RH..............65 74 82 87 90 94 94 94 94 90 90 90
20 FT WIND DIR..S S S S S S SW SW SW SW SW SW
20 FT WIND SPD..4 4 4 4 3 3 3 2 3 3 3 3
20 FT WIND GUST.7 7 6 6 6 6 6 6 7 7 7 7
MIX HGT (KFT)...1.9 1.2 0.4 0.4 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.S S S S S S S S S S SW SW
TRANSP WIND SPD.3 6 7 8 8 8 8 7 7 7 6 6
LVORI...........3 3 5 6 6 6 6 6 6 6 6 6
ADI.............9 4 3 3 4 3 3 3 3 3 3 3
VRATE MPH-FT/1K.6 6 3 3 3 3 3 3 3 2 2 2
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). CHANCE OF SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........49 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST AROUND 5 MPH IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......5200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 6 TO 9 MPH SHIFTING TO THE WEST 7 TO
13 MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....POOR (2645 MPH-FT) EARLY IN THE MORNING
INCREASING TO GOOD (48299 MPH-FT) IN THE
AFTERNOON.
LVORI...............4.
ADI.................2 EARLY IN THE MORNING INCREASING TO 62 IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 26 22 28 22 20 25 27 35 45 45 48
WEATHER COV..... CHC
WEATHER TYPE.... RW
TSTM COV........ CHC
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 30
TEMP............75 74 76 80 84 88 90 91 93 92 92 92
RH..............94 97 94 82 72 61 58 54 51 51 51 49
20 FT WIND DIR..SW SW SW SW W W W W W W W W
20 FT WIND SPD..3 3 3 3 4 4 4 5 5 5 5 5
20 FT WIND GUST.7 6 7 7 9 9 9 11 11 11 11 9
MIX HGT (KFT)...0.5 0.5 0.6 1.3 2.0 2.7 3.5 4.3 5.2 4.7 4.3 3.9
TRANSP WIND DIR.SW SW SW SW W W W W W W W SW
TRANSP WIND SPD.6 6 6 7 9 10 9 8 7 9 12 13
LVORI...........6 7 6 4 3 1 1 1 1 1 1 1
ADI.............2 5 6 12 24 36 42 43 45 52 60 62
VRATE MPH-FT/1K.2 2 3 9 18 27 32 34 36 41 47 48
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR FR FR
FORECASTER...BUTNER
REQUESTED BY...GABRIEL CAHALAN
TYPE OF REQUEST...PRESCRIBED
.TAG 2620959.0/AKQ
.DELDT 08/31/26
.FORMATTERVERSION 2.0.0
.EMAIL GCAHALAN@TNC.ORG
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