
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
801 AM EDT Tue Aug 11 2026
WVZ043-112000-
RAWS 465401
37.53N 81.00W Elev. 2725 ft
801 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 82 66 80 66 82
TEMP 76 81 82 74 70 69 68 67 72 78 80 75 70 68 67 68 75 80 81 76
DEWPT 71 70 70 69 69 68 67 67 70 71 71 70 69 68 67 68 71 71 71 71
MAX/MIN RH 67 100 74 100 71
RH 85 69 67 84 97 97 97100 93 79 74 84 97100100100 87 74 72 85
WIND DIR W W W W W W W W W W W W W SW W W W W W W
WIND SPD 8 8 8 5 6 6 6 8 9 9 8 4 3 3 3 3 5 6 6 4
WIND GUST 18 18 17 18 19 21 23 20 21 19 17 17
CLOUDS B1 B1 SC B2 B2 B1 B1 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2
CLOUDS(%) 56 54 33 84 72 64 59 79 63 59 58 67 67 75 75 73 77 70 70 71
VSBY 10 10 10 10 5 7 6 7 10 10 10 10 10 10 10 0 0 10 10
POP 12HR 40 80 60 50 60
RAIN SHWRS IS SC O SC SC SC IS SC SC SC SC IS IS SC SC NM NM NM
TSTMS IS SC SC IS IS SC SC SC IS IS SC SC
MIX HGT 2 3 3 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 1 2 3 3 1
T WIND DIR NW NW W NW NW SW SW W W W W W W SW W W SE N NW NW
T WIND SPD 8 14 8 11 8 1 2 11 13 20 18 10 5 4 12 9 3 10 11 12
DISPERSION PR PR PR PR VP VP VP VP VP
ADI 21 47 29 8 5 1 2 14 39 80 62 7 3 2 6 12 9 33 38 8
MAX LVORI 4 3 3 4 7 10 10 5 4 3 3 4 9 9 9 5 5 3 3 4
STABILITY B C B E E E E C C C C E F F F B C C C E
CEILING None None 100 100 1000 2100 16100 6300 5100 3500
STA PRES 27.71 27.68 27.68 27.66 27.63 27.59 27.56 27.57 27.57 27.62
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 80 65 80 65 84 68 80
TEMP 70 68 78 74 67 66 78 74 67 67 81 77 70 69 79 74
DEWPT 69 68 71 69 67 66 69 68 66 67 70 70 69 69 71 69
RH 97100 79 84100100 74 82 97100 69 79 97100 77 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 SC B1 B1 SC SC SC SC B1 SC B1 B1
POP 12HR 60 60 20 40 10 20 40 40
RAIN SHWRS NM SC NM NM IS SC SC IS SC IS SC SC
TSTMS SC IS IS SC IS IS 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