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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Wed Aug 12 2026
VAZ018-122000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM EDT Wed Aug 12 2026
Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26
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 87 67 88 69 87
TEMP 84 84 79 73 71 69 70 80 85 87 75 73 71 70 71 80 85 83 75
DEWPT 65 65 67 68 67 66 67 70 69 69 71 70 69 68 69 71 71 71 71
MAX/MIN RH 49 92 57 93 64
RH 53 53 67 84 87 90 90 72 59 55 87 90 93 93 93 74 63 67 87
WIND DIR NW NW W NW W W W W W NW NW NW NW W W W W W W
WIND SPD 6 6 3 4 5 5 6 6 5 5 3 2 2 2 2 3 5 5 3
WIND GUST 13 16 18 20 21 19 17 16
CLOUDS B1 SC SC SC SC SC SC SC SC SC SC B1 SC B1 B1 B1 B2 B2 B1
CLOUDS(%) 60 29 26 46 43 48 41 49 40 45 44 58 45 57 64 69 71 71 65
VSBY 10 10 10 9 8 5 3 10 10 10 7 10 10 4 1 4 10 10 10
POP 12HR 20 30 20 30 60
RAIN SHWRS SC IS IS IS IS IS SC SC NM NM SC
TSTMS IS IS SC SC IS
Obvis PF PF
MIX HGT 3 4 <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 3 4 4 1
T WIND DIR NW NW S W NW W W SW SW W W W W W NW NW NW NW NW
T WIND SPD 17 5 3 4 5 3 3 5 10 16 9 3 11 11 10 14 13 9 8
DISPERSION VP VP PR PR VP VP VP VP VP
ADI 74 27 2 3 4 2 3 24 54 84 4 2 5 5 12 46 52 33 5
MAX LVORI 1 2 5 6 6 6 6 3 1 1 5 6 6 6 5 3 1 3 5
STABILITY A A E E E E A A A A F F F F C C C C E
CEILING None None None None None None 2500 100 2600
STA PRES 27.72 27.73 27.73 27.76 27.73 27.77 27.80 27.85 27.86
Date Sat 08/15/26Sun 08/16/26Mon 08/17/26Tue 08/18/26
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 69 85 69 88 71 88 68 86
TEMP 71 71 84 74 71 71 87 77 73 73 87 75 71 70 85 73
DEWPT 70 69 73 72 69 69 73 72 69 69 72 71 68 68 70 68
RH 97 93 70 93 93 93 63 85 87 87 61 87 90 93 61 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B2 B2 B1 B1 SC B1 FW SC SC SC SC SC SC SC
POP 12HR 50 60 40 40 10 20 20 20
RAIN SHWRS SC SC IS NM SC IS IS SC IS IS IS
TSTMS IS SC IS 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
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