790
FNUS71 KAKQ 171132
FWSAKQ
SPOT FORECAST FOR PINEY GROVE UNIT 46...THE NATURE CONSERVANCY
NATIONAL WEATHER SERVICE WAKEFIELD VA
732 AM EDT THU SEP 17 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE AT 757-899-5734.
DISCUSSION
HIGH PRESSURE REMAINS CENTERED NEAR THE COAST TODAY. THIS WILL
RESULT IN A LIGHT SOUTHERLY WIND LESS THAN 10 MPH. SUNNY AND DRY
WITH MINIMUM RH VALUES DROPPING TO 40-45%. A WEAKENING COLD FRONT
DROPS THROUGH THE AREA TONIGHT BRINGING INCREASING CLOUDS. A LIGHT
NORTHERLY WIND DEVELOPS FRIDAY BEHIND THE COLD FRONT WITH A
MINIMAL CHANCE OF SHOWERS (AROUND 30% CHANCE) AND A SLIGHT CHANCE
OF THUNDERSTORMS (LESS THAN 20% CHANCE) IN THE AFTERNOON.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......3900 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 7 MPH.
SMOKE DISPERSAL.....FAIR (14144 MPH-FT).
LVORI...............2.
ADI.................18 TO 32.
TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........7 7 6 6 5 5 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 10 10 10 10
TEMP............79 82 86 87 88 88 88
RH..............58 53 46 45 43 43 42
20 FT WIND DIR..S S S S S SW S
20 FT WIND SPD..3 4 4 4 4 4 4
20 FT WIND GUST.5 6 7 7 7 7 7
MIX HGT (KFT)...2.1 2.7 3.3 3.9 3.8 3.8 3.7
TRANSP WIND DIR.S S S S SW SW SW
TRANSP WIND SPD.7 7 7 7 7 7 7
LVORI...........2 2 2 1 1 1 1
ADI.............18 23 28 32 32 31 31
VRATE MPH-FT/1K.14 18 22 26 26 25 25
VENTRATE CAT....PR PR PR PR PR PR PR
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 68.
MAX HUMIDITY........87 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH 7 TO 10 MPH.
SMOKE DISPERSAL.....FAIR (18860 MPH-FT) EARLY IN THE EVENING
DECREASING TO POOR (3449 MPH-FT) LATE IN THE
NIGHT.
LVORI...............4.
ADI.................3 TO 24.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........5 7 9 11 13 15 16 17 18 18 19 20
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 0 0 0 10
TEMP............85 82 78 77 75 74 73 72 71 70 70 69
RH..............50 56 67 69 74 74 76 79 81 84 81 84
20 FT WIND DIR..S S S S S S S S S S SW SW
20 FT WIND SPD..4 3 2 1 1 1 2 2 2 2 1 1
20 FT WIND GUST.7 5 3 2 2 2 3 3 3 2 2
MIX HGT (KFT)...2.6 1.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.SW S S S S S S S S S SW SW
TRANSP WIND SPD.7 8 8 8 9 9 10 10 10 9 9 8
LVORI...........2 3 3 3 3 3 4 4 4 5 5 5
ADI.............24 3 4 4 4 4 4 5 5 4 4 4
VRATE MPH-FT/1K.18 11 3 3 3 4 4 4 4 4 3 3
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE
AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........57 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 6 MPH IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......4600 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 7 MPH SHIFTING TO THE NORTH AROUND 10
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (2530 MPH-FT) EARLY IN THE MORNING
INCREASING TO GOOD (45310 MPH-FT) IN THE
AFTERNOON.
LVORI...............4.
ADI.................3 EARLY IN THE MORNING INCREASING TO 46 IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........23 25 27 28 27 27 28 29 52 52 52 53
WEATHER COV..... CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW
TSTM COV........ SCH SCH SCH SCH
CHC OF PCPN (%).10 10 10 10 10 10 10 10 30 30 30 30
TEMP............69 69 69 74 79 84 85 87 88 87 87 86
RH..............87 87 90 79 72 63 61 59 57 57 57 59
20 FT WIND DIR..SW SW W NW N N N N N N N NE
20 FT WIND SPD..1 1 1 2 3 4 6 5 5 5 5 5
20 FT WIND GUST.2 2 2 3 5 6 9 9 9 9 9 9
MIX HGT (KFT)...0.4 0.4 0.4 1.2 1.9 2.6 3.3 3.9 4.6 3.9 3.3 2.6
TRANSP WIND DIR.W NW NW NW N N N N N N N N
TRANSP WIND SPD.7 6 6 7 8 9 9 9 10 10 10 10
LVORI...........6 5 6 4 3 2 1 1 2 2 2 2
ADI.............3 6 6 10 19 29 38 46 29 28 26 23
VRATE MPH-FT/1K.2 2 2 7 14 23 30 38 45 40 34 27
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
FORECASTER...ZIMMERMAN
REQUESTED BY...S. TRUSLOW
TYPE OF REQUEST...PRESCRIBED
.TAG 2622038.0/AKQ
.DELDT 09/17/26
.FORMATTERVERSION 2.0.0
.EMAIL STRUSLOW@TNC.ORG
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