
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
431 PM EDT Tue Aug 11 2026
VAZ046-120800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
431 PM EDT Tue Aug 11 2026
Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 70 91 70 92 72
TEMP 84 79 74 74 72 73 83 88 90 81 75 73 71 72 85 91 90 81 76 74 72 74
DEWPT 66 65 66 68 67 68 68 68 69 69 71 70 70 71 73 73 74 73 72 71 71 72
MIN/MAX RH 90 50 98 56 95
RH 55 62 76 82 84 84 61 52 50 67 87 90 97 97 67 56 60 77 87 90 97 93
WIND DIR W SW SW W W W NW W NW NW W W W W W W W SW SW W W W
WIND SPD 10 8 4 6 6 4 4 4 5 3 3 3 4 3 4 6 6 3 3 3 4 4
CLOUDS OV B2 OV B1 B2 SC SC SC SC SC SC SC FW SC SC B1 B1 B1 SC B1 B1 B1
CLOUDS(%) 100 81 90 60 72 36 48 48 46 44 36 35 22 30 37 63 63 51 46 55 63 52
VSBY 9 9 8 9 7 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 20 50 20
RAIN SHWRS SC SC SC IS IS IS IS IS SC SC IS IS
TSTMS SC IS
MIX HGT 4 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 4 6 6 <1
T WIND DIR NW NW W NW NE NW NW N NW W SW W W W W W N S
T WIND SPD 21 10 3 4 9 8 11 9 5 4 3 3 2 2 2 8 1 6
DISPERSION PR VP PR PR VP VP VP VP VP VP VP VP
ADI 86 9 2 3 6 8 47 60 30 2 2 2 1 2 12 35 5 3
MAX LVORI 1 3 4 5 4 4 1 1 2 3 7 7 8 8 3 1 3 4
STABILITY C D E E E A A A A F G G F A A C C F
CEILING 12700 None None None None None None 5300 None
STA PRES 29.23 29.18 29.21 29.16 29.18 29.20 29.24 29.20
Date 08/14Sat 08/15/26Sun 08/16/26Mon 08/17/26Tue 08/18/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 90 67 85 67 89 72 93 69 88
TEMP 89 81 72 68 83 78 70 69 87 82 74 73 90 84 73 71 86 80
DEWPT 74 73 69 66 68 67 66 67 73 72 71 71 74 72 70 68 69 68
RH 61 77 90 93 61 69 87 93 63 72 90 93 60 67 90 90 57 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 SC SC SC SC B1 B1 FW SC SC SC SC SC SC SC
POP 12HR 60 30 20 10 30 10 20 20 10
RAIN SHWRS NM SC IS IS SC IS IS
TSTMS SC IS IS
$$
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