815
FNUS71 KRNK 120737
FWSRNK
SPOT FORECAST FOR BIG WILSON RX...USFS
NATIONAL WEATHER SERVICE BLACKSBURG VA
337 AM EDT SUN APR 12 2026
FORECAST IS BASED ON IGNITION TIME OF 0449 EDT ON APRIL 12.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
CLOUDS WILL SLOWLY INCREASE IN COVERAGE OVER THE BURN SITE, BUT
CONDITIONS SHOULD REMAIN DRY THROUGH TODAY AND MONDAY. WINDS WILL
START OUT OF THE EAST THIS MORNING BUT SHIFT TO THE SOUTH BY THIS
AFTERNOON, SO THERE MAY BE SMOKE DRIFTING TOWARDS HOT SPRINGS AND
WARM SPRINGS. THE WINDS SHOULD TURN TO THE SOUTHWEST LATER TONIGHT
AND EVENTUALLY TO THE WEST BY MONDAY AFTERNOON. GUSTS UP TO 25 MPH
ARE POSSIBLE ON MONDAY, WHICH WILL INCREASE THE MIXING. MINIMUM
RELATIVE HUMIDITIES SHOULD FALL TOWARDS 40 TO 45 PERCENT THIS
AFTERNOON AND A LITTLE LOWER BY MONDAY AFTERNOON.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
CWR (0.01 IN).......0 PERCENT.
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........43 PERCENT.
WIND (20 FT)........EAST WINDS 5 MPH SHIFTING TO THE SOUTH 5 TO 10
MPH WITH GUSTS UP TO 15 MPH BY NOON.
MIXING HEIGHT.......3700 FT AGL.
MIXING WINDS........EAST 5 TO 10 MPH SHIFTING TO THE SOUTH 10 TO 15
MPH BY NOON.
SMOKE DISPERSAL.....POOR (1000 KNOT-FT) IN THE MORNING INCREASING
TO GOOD (37100 KNOT-FT) IN THE AFTERNOON.
LVORI...............DECREASING TO 1 IN THE AFTERNOON.
ADI.................INCREASING TO 52 IN THE AFTERNOON.
TIME (EDT) 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........23 34 42 46 44 49 50 38 37 33 38 42 45 41
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0 0 0
TEMP............48 47 46 47 48 51 53 57 60 63 66 68 69 69
RH..............65 67 70 71 70 68 66 61 57 54 49 46 46 46
20 FT WIND DIR..E E SE SE SE SE S S S S S S S S
20 FT WIND SPD..5 5 5 5 5 6 6 7 7 7 7 8 8 8
20 FT WIND GUST.8 8 8 8 10 11 12 13 14 14 14 14 16 16
MIX HGT (KFT)...0.2 0.2 0.2 0.2 0.2 1.1 1.5 1.9 2.1 2.5 2.7 3.3 3.7 3.7
MIXNG WIND DIR..E E E SE SE SE S S S S S S S S
MIXNG WIND SPD..7 7 7 7 7 8 10 12 12 10 9 9 10 10
LVORI...........3 3 3 3 3 3 3 2 2 1 1 1 1 1
ADI.............3 5 5 7 7 12 23 32 34 33 32 40 49 52
VRATE MPH-FT/1K.3 2 2 2 2 9 18 25 27 26 26 32 40 43
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) IN THE EVENING THEN
BECOMING MOSTLY CLOUDY (60-70 PERCENT) OVERNIGHT.
CWR (0.01 IN).......0 PERCENT.
MIN TEMPERATURE.....AROUND 57.
MAX HUMIDITY........69 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH WITH GUSTS UP TO 15 MPH
SHIFTING TO THE SOUTHWEST BY MIDNIGHT.
MIXING HEIGHT.......200 FT AGL.
MIXING WINDS........SOUTH 5 TO 10 MPH.
SMOKE DISPERSAL.....GOOD (31200 KNOT-FT) IN THE EVENING DECREASING
TO POOR (900 KNOT-FT) OVERNIGHT.
LVORI...............INCREASING TO 3 OVERNIGHT.
ADI.................DECREASING TO 4 OVERNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........46 38 35 37 51 45 37 50 53 55 62 81
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............68 66 64 63 62 62 60 59 59 58 58 58
RH..............48 51 55 57 59 60 63 64 66 68 66 67
20 FT WIND DIR..S S S S S S SW SW SW SW SW SW
20 FT WIND SPD..8 7 7 7 8 8 8 9 9 9 9 9
20 FT WIND GUST.14 14 13 13 14 14 14 14 16 16 16 16
MIX HGT (KFT)...2.9 0.6 0.4 0.3 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.2
MIXNG WIND DIR..S S S S S S S S S S SW SW
MIXNG WIND SPD..12 12 12 10 9 8 7 6 5 5 6 6
LVORI...........1 2 3 3 3 3 3 3 3 3 3 3
ADI.............44 8 8 7 8 7 4 5 4 4 5 5
VRATE MPH-FT/1K.36 8 6 5 4 3 3 2 2 2 2 2
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT).
CWR (0.01 IN).......10 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS UP TO
25 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 15 MPH IN THE MORNING INCREASING
TO WEST 25 TO 30 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1000 KNOT-FT) IN THE MORNING INCREASING
TO EXCELLENT (103500 KNOT-FT) IN THE AFTERNOON.
LVORI...............DECREASING TO 1 IN THE AFTERNOON.
ADI.................INCREASING TO 97 IN THE AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 80 76 72 66 61 63 67 70 69 66 62
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 10 10 10 10
TEMP............58 58 59 62 65 68 70 71 72 73 73 73
RH..............68 67 65 58 51 45 43 42 41 40 40 40
20 FT WIND DIR..SW SW SW SW SW SW SW W W W W W
20 FT WIND SPD..9 9 10 11 12 12 13 13 13 12 12 11
20 FT WIND GUST.16 17 17 19 22 23 24 23 23 23 22 20
MIX HGT (KFT)...0.2 0.2 0.3 1.0 2.0 3.3 4.1 4.8 5.5 5.2 5.0 4.7
MIXNG WIND DIR..SW SW SW SW SW SW SW W W W W W
MIXNG WIND SPD..6 5 6 8 12 15 20 25 29 29 28 25
LVORI...........3 3 3 2 2 1 1 1 1 1 1 1
ADI.............5 5 4 9 27 51 57 79 97 96 88 77
VRATE MPH-FT/1K.2 2 2 8 22 50 85 128 170 164 146 124
FORECASTER...WILSON
REQUESTED BY...ADAM CHRISTIE
TYPE OF REQUEST...PRESCRIBED
.TAG 2609424.5/RNK
.DELDT 04/12/26
.FORMATTERVERSION 2.0.0
.EMAIL ERIC.HOMAN@TNC.ORG,DANIEL.MARTIN@TNC.ORG,BRENT.FOLTZ@USDA.GOV,ADAM.CHRISTIE@USDA.GOV
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