Spot Forecast
Issued by NWS Blacksburg, VA
Issued by NWS Blacksburg, VA
483
FNUS71 KRNK 022101
FWSRNK
Spot Forecast for McCormick RX...VDOF
National Weather Service Blacksburg VA
501 PM EDT Tue Sep 2 2025
Forecast is based on ignition time of 0000 EDT on September 03.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...
Going to see fairly clear skies overnight. An increase
in moisture for Wednesday with small chance of wetting
showers in the afternoon. Mixing winds Wednesday will
be light from the southwest while min RH drops to 50-55
percent with mix of sun and clouds. Better chance of wetting
showers Thursday ahead of a front.
.OVERNIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR (0.01 in).......0 percent.
Min temperature.....Around 53.
Max humidity........86 percent.
Wind (20 ft)........Light winds.
Mixing height.......500 ft AGL.
Mixing winds........North around 0 mph shifting to the west 1 to 2
mph after 3 am.
Smoke dispersal.....Poor (0 knot-ft).
LVORI...............6.
ADI.................0 to 1.
TIME (EDT) MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........12 19 17 22 16 22
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0
Temp............56 56 55 55 54 54
RH..............82 82 83 83 82 84
20 FT wind dir..E SE SW SW SW S
20 FT wind spd..1 1 1 1 1 1
20 FT wind gust.2 2 4 4 4 4
Mix hgt (kft)...0.6 0.5 0.5 0.6 0.5 0.5
Mixng wind dir..N N N W W SW
Mixng wind spd..0 0 0 1 1 2
LVORI...........6 6 6 6 6 5
ADI.............0 0 0 0 1 1
VRate mph-ft/1K.0 0 0 0 1 1
.WEDNESDAY...
Sky/weather.........Mix sun and clouds (30-70 percent). Slight chance of
rain showers and storms late in the afternoon.
CWR (0.01 in).......10 percent increasing to 20 percent late in the
afternoon.
Max temperature.....Around 76.
Min humidity........54 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
near thunderstorms late in the afternoon.
Mixing height.......5200 ft AGL.
Mixing winds........Southwest 2 to 9 mph.
Smoke dispersal.....Poor (800 knot-ft) early in the morning
increasing to good (35200 knot-ft) in the
afternoon.
LVORI...............4.
ADI.................1 early in the morning increasing to 50 in the
afternoon.
TIME (EDT) 6 AM 9 AM NOON 3 PM
Sky (%).........28 55 55 61
Weather cov..... S CHC
Weather type....NONE NONE NONE RNSHWR
Tstm cov........
CWR.............0 0 0 20
Temp............53 61 71 74
RH..............86 76 59 54
20 FT wind......SW 1G4 SW 2G5 SW 3G6 SW 4G7
Mix hgt (ft)....600 1000 4400 5100
Mixing wind......SW 2 SW 5 SW 9 SW 7
LVORI...........6 4 1 1
ADI.............1 6 49 45
VRate mph-ft/1K.1 5 39 36
.WEDNESDAY NIGHT...
Sky/weather.........Mostly cloudy (45-65 percent) then becoming
partly cloudy (25-35 percent).
CWR (0.01 in).......10 percent.
Min temperature.....Around 56.
Max humidity........93 percent.
Wind (20 ft)........Light winds.
Mixing height.......500 ft AGL.
Mixing winds........Southwest 5 to 8 mph.
Smoke dispersal.....Fair (21400 knot-ft) early in the evening
decreasing to poor (2200 knot-ft) late in the
night.
LVORI...............4.
ADI.................2 to 26.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........61 57 37 33 31 29 26 24 21 19 16 14
Weather cov.....
Weather type....
Tstm cov........
CWR.............10 10 0 0 0 0 0 0 0 0 0 0
Temp............72 69 65 64 63 61 61 60 59 58 58 57
RH..............61 66 74 78 81 83 85 87 88 90 91 92
20 FT wind dir..SW SW S S S SW SW SW SW SW SW SW
20 FT wind spd..4 3 2 2 2 2 2 2 2 2 2 2
20 FT wind gust.8 8 7 6 6 6 6 6 6 6 6 6
Mix hgt (kft)...3.0 1.3 0.6 0.5 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6
Mixng wind dir..SW SW SW SW SW SW SW SW SW SW SW SW
Mixng wind spd..8 8 8 7 6 5 5 5 5 5 5 5
LVORI...........2 3 3 4 5 5 5 6 6 6 6 6
ADI.............26 4 4 3 3 2 2 2 2 2 2 2
VRate mph-ft/1K.25 11 5 3 3 3 3 3 3 3 3 3
.THURSDAY...
Sky/weather.........Partly-Mostly sunny (35-55 percent). Slight chance of
showers and thunderstorms early in the
afternoon. Chance of showers and thunderstorms
late in the afternoon.
CWR (0.01 in).......10 percent increasing to 50 percent.
Max temperature.....Around 80.
Min humidity........56 percent.
Wind (20 ft)........Light winds becoming southwest around 6 mph
late in the morning. Gusty and erratic winds
expected near thunderstorms late in the
afternoon.
Mixing height.......6600 ft AGL.
Mixing winds........Southwest 3 to 12 mph increasing to 24 to 25
mph.
Smoke dispersal.....Poor (2100 knot-ft) early in the morning
increasing to excellent (92300 knot-ft) in the
afternoon increasing to fair (29900 knot-ft)
early in the morning increasing to excellent
(124500 knot-ft) in the afternoon late in the
afternoon.
LVORI...............4.
ADI.................2 early in the morning increasing to 156 in the
afternoon.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........13 11 12 13 14 15 23 32 40 48 57 65
Weather cov..... SCH CHC CHC CHC
Weather type.... RW RW RW RW
Tstm cov........ SCH CHC CHC CHC
CWR.............0 0 0 0 0 0 0 10 20 30 40 50
Temp............57 57 59 63 67 71 74 76 77 77 76 74
RH..............93 93 91 84 77 69 63 58 56 57 61 65
20 FT wind dir..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..2 2 2 3 4 6 6 6 6 6 6 6
20 FT wind gust.6 6 7 8 11 12 14 14 14 14 14 14
Mix hgt (kft)...0.6 0.6 0.7 1.3 2.0 2.7 4.0 5.3 6.6 4.8 3.1 1.4
Mixng wind dir..SW SW SW SW SW SW SW SW SW SW SW S
Mixng wind spd..5 3 5 7 12 15 17 20 22 24 25 24
LVORI...........7 6 6 4 3 1 1 1 1 1 1 1
ADI.............2 4 4 13 30 51 85 121 156 134 96 44
VRate mph-ft/1K.2 2 3 10 23 41 71 106 143 115 78 34
$$
Forecaster...Perry
Requested by...Christopher Cahoon
Type of request...PRESCRIBED
.TAG 2521137.0/RNK
.DELDT 09/02/25
.FormatterVersion 2.0.0
.EMAIL Christopher.cahoon@dof.virginia.gov