
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
231 PM EDT Tue Aug 11 2026
VAZ024-120800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 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 68 92 69 93 70
TEMP 83 79 74 72 70 72 82 88 90 81 75 72 70 72 86 92 91 82 76 73 71 73
DEWPT 68 66 67 67 66 67 67 67 68 69 71 70 69 70 72 71 72 72 72 71 70 71
MIN/MAX RH 93 48 98 50 98
RH 61 64 79 84 87 84 61 50 49 67 87 93 97 93 63 51 54 72 87 93 97 93
WIND DIR W SW SW W W W W W NW W W W W NW W W W W W W W W
WIND SPD 8 6 4 3 3 2 3 4 4 2 1 1 1 1 3 4 4 2 1 1 1 2
CLOUDS B2 B1 OV B2 SC B1 SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1
CLOUDS(%) 85 62 93 72 47 66 42 28 40 40 28 38 27 47 44 63 63 61 52 62 58 53
VSBY 10 10 6 7 7 8 8 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 20 30 50 30
RAIN SHWRS IS SC NM SC IS IS SC SC SC SC SC SC SC
TSTMS IS IS IS SC SC IS
MIX HGT 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 4 5 3 <1
T WIND DIR NW NW N NE W NW NW NW NW W W NW NW NW W W SW SW
T WIND SPD 2 4 5 6 8 6 14 10 9 3 5 3 3 2 5 6 9 3
DISPERSION PR VP VP VP VP VP VP VP VP VP VP VP
ADI 9 3 4 3 4 7 59 60 39 2 3 2 2 2 26 29 32 2
MAX LVORI 2 3 5 5 6 4 1 1 1 3 6 7 8 8 2 2 1 3
STABILITY B E E F F A A A A G G G G A A C C F
CEILING 12400 2800 None None None None None None 3800 None
STA PRES 28.47 28.46 28.41 28.45 28.40 28.42 28.43 28.47 28.44
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 92 67 87 67 92 71 94 68 90
TEMP 91 83 72 68 85 80 70 69 90 84 74 73 92 84 71 70 88 81
DEWPT 72 72 69 66 67 68 67 67 71 72 71 71 71 69 69 68 66 66
RH 54 70 90 93 55 67 90 93 54 67 90 93 51 61 93 93 48 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 SC B1 SC SC SC SC SC SC SC SC FW SC FW SC
POP 12HR 50 30 20 10 20 20 20 10 10
RAIN SHWRS SC SC SC SC IS IS IS 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