
Clusters of thunderstorms will move across the area today into tonight. Torrential downpours and training of storms could cause flash flooding. Severe wind gusts will also be possible. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EDT Tue Aug 11 2026
VAZ012-112000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
1031 AM EDT Tue Aug 11 2026
Date Tue 08/11/26 Wed 08/12/26 Thu 08/13/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 83 66 85 66 86
TEMP 76 82 82 75 69 68 67 67 74 80 83 77 69 68 66 67 76 82 85 78
DEWPT 68 67 67 65 67 66 65 66 70 70 70 68 67 66 66 67 71 70 70 69
MAX/MIN RH 58 100 64 100 61
RH 76 61 61 71 93 93 93 97 87 72 65 74 93 93100100 85 67 61 74
WIND DIR W W NW W W W W W W W W W W W W W W W W W
WIND SPD 8 3 3 3 4 4 5 5 4 4 3 2 3 2 2 3 3 3 3 2
WIND GUST 14 16
CLOUDS CL B2 SC B1 B2 B1 OV B2 B1 B1 SC B1 B1 B1 B2 B2 B1 B1 B1 B1
CLOUDS(%) 0 82 48 61 73 59 93 79 62 55 38 59 62 67 80 76 69 60 60 55
VSBY 10 10 10 10 7 7 4 10 10 10 10 10 10 5 0 0 10 10 10 10
POP 12HR 50 60 40 40 40
RAIN SHWRS SC SC IS SC NM SC SC SC IS SC SC SC SC SC SC SC
TSTMS SC SC IS SC SC SC IS IS IS IS SC SC SC
MIX HGT 2 4 2 <1 <1 <1 <1 <1 2 4 2 <1 <1 <1 <1 1 2 3 3 <1
T WIND DIR W N W W NW W SW W W W W W W W W W SW NW NW NW
T WIND SPD 17 19 8 6 5 3 6 10 8 19 12 8 6 8 6 9 16 19 13 5
DISPERSION VP VP VP PR VP VP VP VP VP
ADI 52 93 23 3 4 2 5 11 22 74 37 4 3 4 3 13 47 70 57 3
MAX LVORI 3 1 2 4 6 6 6 7 4 3 1 4 6 8 9 5 4 1 1 4
STABILITY B B B F E E E C C C A F F F F B B B B F
CEILING 2500 100 800 800 None 17400 0 3100 5700
STA PRES 27.28 27.28 27.28 27.25 27.22 27.18 27.17 27.18 27.22
Date Fri 08/14/26Sat 08/15/26Sun 08/16/26Mon 08/17/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 67 85 64 84 64 87 67 84
TEMP 70 68 81 76 67 65 79 75 66 65 82 78 69 69 81 75
DEWPT 67 68 70 69 66 65 69 68 65 65 69 69 66 67 70 68
RH 90100 69 79 97100 72 79 97100 65 74 90 93 69 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B2 B2 B1 SC B1 B1 SC SC B1 B1 SC SC B1 B1
POP 12HR 30 60 30 50 20 30 20 50
RAIN SHWRS SC IS NM SC IS SC SC IS SC IS IS SC
TSTMS SC IS SC IS SC SC IS IS SC
$$
This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.
Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)
DAY 1 THROUGH 3...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew point temperature
MIN/MAX RH OR MAX/MIN RH(%).........Maximum/Minimum humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
TYPE...
RAIN...........Rain
RAIN SHWRS.....Rain showers
TSTMS..........Thunderstorms
DRIZZLE........Drizzle
SNOW...........Snow
SNOWSHWRS......Snow showers
SLEET..........Sleet
FRZG RAIN......Freezing rain
FRZG DRZL......Freezing drizzle
COVERAGE...
IS.............Isolated
SC.............Scattered
NM.............Numerous
O..............Occasional
S..............Slight chance
C..............Chance
L..............Likely
WD.............Widespread
D..............Definite
AR.............Areas
PA.............Patchy
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure
Day 4 Through 7...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew Point temperature
RH(%)...............................Relative Humidity
WIND SPD(MPH).......................Wind Speed
Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions