443
FNUS71 KRNK 080934
FWSRNK
SPOT FORECAST FOR GRASSY HILL NAP UNIT 2...VA DCR
NATIONAL WEATHER SERVICE BLACKSBURG VA
434 AM EST THU JAN 8 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EST ON JANUARY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
EXPECT THE SURFACE INVERSION TO STICK AROUND TIL 10AM. HIGH CLOUDS
WILL SPREAD ACROSS THE SKY FROM TIME TO TIME LIMITING SUNSHINE.
HOWEVER, SHOULD BE ENOUGH TO WARM TEMPERATURES TO THE UPPER
50S BY 2-3PM, THOUGH MIN RH WILL BE IN THE 50-55 PERCENT RANGE.
MIXING WILL BE LIMITED WITH THE LIGHT WINDS.
THIS WILL BE THE LAST DAY TO BURN AS A WETTING RAIN MOVES IN FRIDAY.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT).
CWR (0.01 IN).......0 PERCENT.
MAX TEMPERATURE.....AROUND 58.
MIN HUMIDITY........53 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......2200 FT AGL.
MIXING WINDS........EAST 3 TO 6 MPH SHIFTING TO THE SOUTHEAST 6 TO
8 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (15200 KNOT-FT) IN THE
AFTERNOON.
LVORI...............3.
ADI.................4 TO 22.
TIME (EST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........60 62 64 68 74 78 86 77 83
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0
TEMP............45 48 51 54 56 57 58 57 56
RH..............64 61 58 56 55 53 55 57 60
20 FT WIND DIR..N E E SE SE SE SE SE SE
20 FT WIND SPD..1 1 2 3 3 3 3 3 2
20 FT WIND GUST. 2 5 5 5 5 5 4
MIX HGT (KFT)...0.4 0.9 1.5 1.6 2.0 2.2 2.2 2.1 0.8
MIXNG WIND DIR..NE E E SE SE SE SE SE SE
MIXNG WIND SPD..3 5 6 7 8 8 8 7 6
LVORI...........3 3 2 2 2 2 2 2 3
ADI.............4 6 11 15 20 22 22 17 5
VRATE MPH-FT/1K.2 4 9 12 16 17 17 14 5
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT).
CWR (0.01 IN).......10 PERCENT.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........99 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........SOUTHEAST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR (1900 KNOT-FT).
LVORI...............5.
ADI.................2 TO 5.
TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........79 85 81 88 90 84 55 74 78 88 93 95
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 10 10 0 0 0 10 10 10 10 10
TEMP............54 52 50 49 48 47 47 46 46 46 45 45
RH..............65 64 68 72 77 81 83 85 86 88 93 94
20 FT WIND DIR..SE SE SE SE SE S S S SE SE SE SE
20 FT WIND SPD..1 2 2 2 2 2 2 2 2 2 2 2
20 FT WIND GUST.2 4 4 4
MIX HGT (KFT)...0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
MIXNG WIND DIR..SE E SE SE SE SE SE SE SE S S S
MIXNG WIND SPD..5 5 5 6 6 6 6 6 7 9 10 9
LVORI...........3 3 3 3 4 5 5 5 6 5 6 6
ADI.............2 2 2 2 3 3 2 3 3 4 5 4
VRATE MPH-FT/1K.3 2 2 3 3 3 3 3 4 4 5 5
FRIDAY
SKY/WEATHER.........CLOUDY (90-100 PERCENT). SLIGHT CHANCE OF RAIN
IN THE MORNING. RAIN LIKELY IN THE AFTERNOON.
CWR (0.01 IN).......10 PERCENT INCREASING TO 60 PERCENT.
MAX TEMPERATURE.....AROUND 62.
MIN HUMIDITY........83 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 9 MPH WITH
GUSTS TO AROUND 16 MPH IN THE LATE MORNING AND
AFTERNOON.
MIXING HEIGHT.......2000 FT AGL.
MIXING WINDS........SOUTH 7 TO 13 MPH.
SMOKE DISPERSAL.....POOR (3000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (22000 KNOT-FT) IN THE
AFTERNOON.
LVORI...............7.
ADI.................5 TO 24.
TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........97 97 97 96 96 94 94 93 94 94 95 94
WEATHER COV..... SCH SCH SCH SCH SCH SCH LKY LKY LKY LKY LKY
WEATHER TYPE.... RN RN RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............10 20 20 20 20 20 20 60 60 60 60 60
TEMP............46 46 47 49 51 54 56 59 60 61 62 62
RH..............94 98 99 97 95 92 88 86 84 83 83 83
20 FT WIND DIR..SE SE S S S S S S S S S S
20 FT WIND SPD..3 2 4 5 6 7 8 9 9 9 8 8
20 FT WIND GUST.5 6 7 10 11 13 14 16 16 16 16 14
MIX HGT (KFT)...0.5 0.5 0.5 0.7 0.9 1.3 1.7 2.0 1.5 1.7 1.9 1.5
MIXNG WIND DIR..S S S S S S S S S S S SW
MIXNG WIND SPD..8 7 7 7 8 9 12 13 13 12 10 9
LVORI...........6 9 8 6 6 5 4 4 4 4 4 4
ADI.............6 5 7 8 10 15 20 24 21 21 20 14
VRATE MPH-FT/1K.4 3 4 5 8 13 20 25 19 20 20 13
FORECASTER...PERRY
REQUESTED BY...TYLER URGO
TYPE OF REQUEST...PRESCRIBED
.TAG 2528566.0/RNK
.DELDT 01/08/26
.FORMATTERVERSION 2.0.0
.EMAIL TYLER.URGO@DCR.VIRGINIA.GOV
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