838
FNUS71 KRNK 252020
FWSRNK
SPOT FORECAST FOR PHILPOTT LAKE...USACE
NATIONAL WEATHER SERVICE BLACKSBURG VA
420 PM EDT WED MAR 25 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON MARCH 26.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE WILL GRADUALLY SLIDE EAST TONIGHT, MAKING FOR A
GRADUAL WIND SHIFT FROM THE SOUTHWEST BY THURSDAY MORNING. MOISTURE
WILL INCREASE FOR THURSDAY AS A COLD FRONT APPROACHES FROM THE
NORTHWEST, MAKING FOR A MIXTURE OF CLOUDS AND SUNSHINE ON THURSDAY
AFTERNOON. THURSDAY AFTERNOON MINIMUM RH VALUES WILL BE IN THE LOWER
40S PERCENT. FRONTAL PASSAGE ON FRIDAY WILL TRIGGER SCATTERED
RAIN SHOWERS AND ISOLATED THUNDERSTORMS DURING THE AFTERNOON AND
EVENING. WETTING RAINFALL TOTALS WILL BE GENERALLY LESS THAN
ONE-QUARTER INCH.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR (0.01 IN).......0 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........41 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 7 MPH WITH
GUSTS TO AROUND 17 MPH IN THE AFTERNOON.
MIXING HEIGHT.......5400 FT AGL.
MIXING WINDS........SOUTHWEST 8 TO 17 MPH.
SMOKE DISPERSAL.....POOR (4200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (81000 KNOT-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................4 EARLY IN THE MORNING INCREASING TO 79 IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........40 41 41 39 37 35 33 32 30 28 25 23
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............47 47 48 52 58 63 67 71 73 75 76 76
RH..............69 73 73 66 57 51 47 44 42 41 42 43
20 FT WIND DIR..SW S S SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..3 2 2 3 3 4 5 6 6 6 7 7
20 FT WIND GUST.10 10 10 10 11 12 14 14 14 17 17 17
MIX HGT (KFT)...0.7 0.6 0.6 0.8 1.5 1.8 2.8 3.6 4.1 4.6 4.7 5.4
MIXNG WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
MIXNG WIND SPD..9 9 8 8 9 10 12 12 13 15 16 17
LVORI...........3 3 3 3 2 2 1 1 1 1 1 1
ADI.............4 9 8 9 18 24 38 51 62 79 66 74
VRATE MPH-FT/1K.6 6 5 6 14 19 30 42 52 67 77 93
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT).
CWR (0.01 IN).......0 PERCENT.
MIN TEMPERATURE.....AROUND 59.
MAX HUMIDITY........81 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 6 MPH WITH GUSTS TO AROUND
16 MPH EARLY IN THE EVENING BECOMING LIGHT,
THEN BECOMING SOUTHWEST AROUND 5 MPH OVERNIGHT
BECOMING LIGHT.
MIXING HEIGHT.......700 FT AGL.
MIXING WINDS........SOUTHWEST 9 TO 16 MPH.
SMOKE DISPERSAL.....GOOD (54400 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (7000 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............3.
ADI.................75 EARLY IN THE EVENING DECREASING TO 5 LATE IN
THE NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........22 22 21 19 16 14 23 31 40 44 49 53
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............74 72 69 68 66 65 64 63 62 61 60 60
RH..............46 51 56 60 64 67 70 72 74 77 79 81
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW W W
20 FT WIND SPD..6 5 4 3 3 3 4 4 5 5 4 4
20 FT WIND GUST.16 14 13 14 14 14 14 14 14 14 14 14
MIX HGT (KFT)...4.0 1.1 0.8 0.7 0.8 0.9 0.9 0.9 0.9 0.9 0.9 0.9
MIXNG WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
MIXNG WIND SPD..16 14 12 12 12 13 13 13 13 12 10 9
LVORI...........1 2 3 3 3 3 3 3 3 4 4 4
ADI.............75 6 5 5 5 6 6 6 6 8 7 6
VRATE MPH-FT/1K.63 14 9 8 10 11 12 12 12 11 9 8
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT) THEN BECOMING
CLOUDY (85-95 PERCENT). CHANCE OF SHOWERS LATE
IN THE AFTERNOON.
CWR (0.01 IN).......10 PERCENT INCREASING TO 40 PERCENT LATE IN THE
AFTERNOON.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........48 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 6 MPH WITH GUSTS
TO AROUND 17 MPH IN THE LATE MORNING AND
AFTERNOON, THEN SHIFTING TO THE NORTHWEST
AROUND 7 MPH WITH GUSTS TO AROUND 18 MPH LATE
IN THE AFTERNOON.
MIXING HEIGHT.......5900 FT AGL.
MIXING WINDS........WEST 8 TO 14 MPH INCREASING TO 15 TO 24 MPH IN
THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR (6300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (93700 KNOT-FT) IN THE
AFTERNOON.
LVORI...............3.
ADI.................5 EARLY IN THE MORNING INCREASING TO 76 IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........52 51 50 55 59 64 69 73 78 83 87 92
WEATHER COV..... CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW
TSTM COV........
CWR.............0 0 10 10 10 10 10 10 40 40 40 40
TEMP............60 61 62 65 69 71 74 75 76 76 74 72
RH..............81 79 75 69 62 57 53 50 49 48 49 51
20 FT WIND DIR..W W W W W W W W W NW NW NW
20 FT WIND SPD..4 4 4 5 6 6 6 6 6 6 6 7
20 FT WIND GUST.14 14 14 16 16 16 16 14 14 16 17 18
MIX HGT (KFT)...0.9 0.9 1.0 2.0 3.1 4.1 4.7 5.3 5.9 5.8 5.7 5.7
MIXNG WIND DIR..SW W W W W W W W W W W W
MIXNG WIND SPD..8 8 9 14 21 24 23 20 16 15 16 16
LVORI...........4 4 4 3 1 1 1 1 1 1 1 1
ADI.............5 10 12 37 76 68 68 61 53 51 51 52
VRATE MPH-FT/1K.7 7 9 29 62 100 108 103 95 90 90 91
FORECASTER...SLEIGHTER
REQUESTED BY...BRIAN STEWART
TYPE OF REQUEST...PRESCRIBED
.TAG 2607902.0/RNK
.DELDT 03/25/26
.FORMATTERVERSION 2.0.0
.EMAIL BRIAN.W.STEWART@USACE.ARMY.MIL
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