577
FNUS71 KAKQ 090939
FWSAKQ
SPOT FORECAST FOR NASSAWANGO JOHNSON 2026...THE NATURE CONSERVANCY
NATIONAL WEATHER SERVICE WAKEFIELD VA
539 AM EDT WED SEP 9 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON SEPTEMBER 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE AT 757-899-5734.
DISCUSSION
HIGH PRESSURE MOVES OFFSHORE TODAY AS DRY CONDITIONS CONTINUE.
WINDS BECOME SOUTHWESTERLY 5-10 MPH TODAY AND COULD GUST AROUND 15
MPH THIS AFTERNOON. RH VALUES FALL TO 45-50% DURING PEAK MIXING.
INCREASINGLY FAVORABLE TRANSPORT WINDS FROM MID TO LATE MORNING
INTO THE AFTERNOON SHOULD EFFICIENTLY DISPERSE SMOKE.
REST OF TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........48 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 9 MPH.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 17 MPH INCREASING TO AROUND 20
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (25529 MPH-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (83145 MPH-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................32 EARLY IN THE MORNING INCREASING TO 74 IN THE
AFTERNOON.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 26 23 21 18 17 16 14
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0
TEMP............77 80 82 83 83 85 83 83
RH..............67 62 56 53 51 48 51 51
20 FT WIND DIR..SW SW SW SW SW SW S S
20 FT WIND SPD..6 7 7 8 9 9 9 9
20 FT WIND GUST.11 12 12 14 14 14 14 15
MIX HGT (KFT)...2.4 3.4 3.9 4.5 5.0 4.7 4.3 4.0
TRANSP WIND DIR.SW SW SW SW SW SW SW SW
TRANSP WIND SPD.10 13 14 15 16 17 20 20
LVORI...........3 1 1 1 1 1 1 1
ADI.............32 53 66 58 65 70 74 73
VRATE MPH-FT/1K.25 43 55 66 78 81 83 78
VENTRATE CAT....PR PR FR FR GD GD GD GD
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 71.
MAX HUMIDITY........79 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 10 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 17 MPH.
SMOKE DISPERSAL.....GOOD (48299 MPH-FT) EARLY IN THE EVENING
DECREASING TO POOR (4600 MPH-FT) LATE IN THE
NIGHT.
LVORI...............3.
ADI.................53 EARLY IN THE EVENING DECREASING TO 7 LATE IN
THE NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........12 11 9 12 14 17 17 16 16 16 15 15
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............81 78 75 74 74 74 74 74 74 74 74 73
RH..............54 60 66 71 74 76 76 76 76 76 76 79
20 FT WIND DIR..S S S S S S S SW SW SW SW SW
20 FT WIND SPD..8 8 7 7 7 8 8 8 9 9 10 10
20 FT WIND GUST.14 14 15 14 14 15 15 15 15 16 18 18
MIX HGT (KFT)...2.8 1.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4
TRANSP WIND DIR.S S S S S S S SW SW SW SW SW
TRANSP WIND SPD.17 14 10 10 10 10 12 12 13 14 15 15
LVORI...........1 3 3 3 3 4 4 4 4 4 4 4
ADI.............53 9 7 7 7 7 7 8 9 9 10 10
VRATE MPH-FT/1K.48 22 4 4 4 5 5 5 5 6 6 6
VENTRATE CAT....FR PR PR PR PR PR PR PR PR PR PR PR
THURSDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........54 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 10 MPH.
MIXING HEIGHT.......3900 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR (12994 MPH-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (64744 MPH-FT) IN THE
AFTERNOON.
LVORI...............3.
ADI.................11 EARLY IN THE MORNING INCREASING TO 78 IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 12 11 12 18 14 9 6 7 9 18 23
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 10 10 10
TEMP............73 72 73 76 79 81 83 85 86 87 88 87
RH..............76 79 81 74 69 65 63 59 57 55 54 55
20 FT WIND DIR..SW SW SW SW SW SW SW W W W W W
20 FT WIND SPD..10 9 9 9 9 9 8 8 7 7 6 6
20 FT WIND GUST.18 16 16 16 16 16 15 14 12 12 11 11
MIX HGT (KFT)...0.8 1.1 1.4 1.7 2.0 2.2 2.7 3.2 3.7 3.8 3.8 3.9
TRANSP WIND DIR.SW SW SW SW SW SW W W W W W W
TRANSP WIND SPD.17 18 20 20 18 18 17 17 17 17 16 15
LVORI...........4 3 3 3 1 1 1 1 1 1 1 1
ADI.............11 25 36 42 45 48 54 59 78 78 76 69
VRATE MPH-FT/1K.12 20 27 32 36 40 48 56 64 64 63 57
VENTRATE CAT....PR PR PR PR PR PR FR FR FR FR FR FR
FORECASTER...ROGERS
REQUESTED BY...GABRIEL CAHALAN
TYPE OF REQUEST...PRESCRIBED
.TAG 2621472.0/AKQ
.DELDT 09/09/26
.FORMATTERVERSION 2.0.0
.EMAIL GCAHALAN@TNC.ORG
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