082
FNUS71 KRNK 281312
FWSRNK

Spot Forecast for BUKRx...VDOF
National Weather Service Blacksburg VA
912 AM EDT Thu Aug 28 2025

Forecast is based on ignition time of 1100 EDT on August 28.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Just a few passing clouds this afternoon. Good mixing
for the burn site this afternoon as Min RH drops to around
40 percent. Inversion sets up by 7-8pm this evening.

Friday should have plenty of sunshine and good mixing
after inversion breaks in the 8-10am time frame.

.REST OF TODAY...

Sky/weather.........Mostly Sunny (20-30 percent).
CWR (0.01 in).......0 percent.
Max temperature.....Around 80.
Min humidity........40 percent.
Wind (20 ft)........Light winds becoming southwest around 5 mph
                    late in the afternoon.
Mixing height.......7800 ft AGL.
Mixing winds........Southwest 6 to 13 mph.
Smoke dispersal.....Fair (15800 knot-ft) early in the morning
                    increasing to excellent (86900 knot-ft) in the
                    afternoon.
LVORI...............2.
ADI.................23 early in the morning increasing to 118 in
                    the afternoon.

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........16  20  25  29  27  25  23
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0
Temp............72  74  76  78  78  79  78
RH..............60  48  44  40  41  41  43
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..2   3   4   5   5   5   5
20 FT wind gust.6   7   10  11  12  12  11
Mix hgt (kft)...3.2 5.6 7.3 7.7 7.8 7.8 7.2
Mixng wind dir..SW  SW  SW  SW  SW  SW  SW
Mixng wind spd..6   8   12  13  13  12  10
LVORI...........2   1   1   1   1   1   1
ADI.............23  58  95  115 118 110 89
VRate mph-ft/1K.18  47  80  97  100 93  75

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR (0.01 in).......0 percent.
Min temperature.....Around 57.
Max humidity........86 percent.
Wind (20 ft)........Southwest winds around 5 mph becoming light.
Mixing height.......400 ft AGL.
Mixing winds........Southwest 3 to 8 mph.
Smoke dispersal.....Good (34100 knot-ft) early in the evening
                    decreasing to poor (1300 knot-ft) late in the
                    night.
LVORI...............4.
ADI.................49 early in the evening decreasing to 1 late in
                    the night.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........23  23  23  40  35  35  23  21  10  16  7   12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............76  73  68  65  64  63  62  61  60  59  58  57
RH..............46  52  65  70  71  73  76  78  81  82  83  86
20 FT wind dir..SW  SW  S   S   S   SW  SW  SW  W   W   SW  W
20 FT wind spd..5   4   3   2   2   2   2   2   2   2   2   2
20 FT wind gust.10  8   6   7   6   6   6   6   6   5   6   6
Mix hgt (kft)...4.9 0.9 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.5
Mixng wind dir..SW  SW  S   S   S   S   SW  SW  SW  SW  SW  SW
Mixng wind spd..8   6   3   3   3   5   5   5   5   5   3   3
LVORI...........1   2   3   3   3   3   4   4   5   5   5   6
ADI.............49  2   2   1   2   2   2   2   2   2   2   2
VRate mph-ft/1K.39  5   2   1   2   2   2   2   2   2   1   2

.FRIDAY...

Sky/weather.........Sunny (10-20 percent).
CWR (0.01 in).......0 percent.
Max temperature.....Around 83.
Min humidity........45 percent.
Wind (20 ft)........Light winds becoming west around 5 mph early in
                    the afternoon, then becoming light late in the
                    afternoon.
Mixing height.......7100 ft AGL.
Mixing winds........West 2 to 8 mph shifting to the northwest 7 to
                    12 mph late in the morning.
Smoke dispersal.....Poor (600 knot-ft) early in the morning
                    increasing to excellent (62000 knot-ft) in the
                    afternoon.
LVORI...............4.
ADI.................1 early in the morning increasing to 86 in the
                    afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........19  19  10  2   3   4   9   13  18  20  21  23
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............57  57  59  66  71  75  78  80  81  82  82  81
RH..............86  83  82  68  58  53  49  46  45  45  46  48
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..2   2   2   2   3   4   4   5   5   5   4   4
20 FT wind gust.6   6   6   6   6   7   8   8   10  10  10  8
Mix hgt (kft)...0.4 0.4 0.3 1.0 2.5 4.5 5.6 6.4 6.5 7.1 7.0 6.8
Mixng wind dir..SW  W   W   W   W   NW  NW  NW  NW  NW  NW  W
Mixng wind spd..2   2   2   5   8   10  12  12  10  9   8   7
LVORI...........6   5   5   3   2   1   1   1   1   1   1   1
ADI.............1   2   2   6   25  59  78  86  82  81  70  57
VRate mph-ft/1K.1   1   1   5   20  46  63  71  67  68  58  47

$$
Forecaster...Perry
Requested by...HC
Type of request...PRESCRIBED
.TAG 2520665.1/RNK
.DELDT 08/28/25
.FormatterVersion 2.0.0
.EMAIL richard.burgess@dof.virginia.gov,Harlee.Craddock@dof.virginia.gov