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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Mon Aug 31 2026
VAZ024-312000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
331 AM EDT Mon Aug 31 2026
Date Mon 08/31/26 Tue 09/01/26 Wed 09/02/26
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 94 70 97 72 99
TEMP 68 69 88 94 93 81 76 73 70 72 89 96 96 84 77 74 72 73 92 98 97 84
DEWPT 66 67 70 67 68 68 67 67 66 67 69 68 69 68 68 68 67 68 70 68 68 68
MAX/MIN RH 40 88 39 86 37
RH 93 93 55 41 44 65 74 81 87 84 52 40 42 59 74 82 84 84 49 38 39 59
WIND DIR N NW NW NW NW N N N N W W W W W N N N NW NW W W SW
WIND SPD 0 1 1 2 2 1 0 0 0 1 2 2 3 1 0 0 0 1 1 2 2 1
CLOUDS FW FW FW SC SC SC FW FW FW FW FW FW FW SC SC FW CL CL CL FW FW FW
CLOUDS(%) 7 18 9 30 42 50 16 19 9 16 6 12 25 34 26 7 2 4 5 10 14 19
VSBY 7 9 10 10 10 10 7 5 6 10 7 10 10 10
POP 12HR 20 5 5 0 5
RAIN SHWRS IS
TSTMS IS
MIX HGT <1 <1 3 6 3 <1 <1 <1 <1 <1 4 7 6 <1 <1 <1 <1 <1 5 8 8 <1
T WIND DIR NW NW NW NW NW W NW NW NW NW NW W NW W W NW NW NW N W SW SW
T WIND SPD 2 2 6 6 5 1 2 3 3 3 12 8 8 3 3 3 3 2 4 3 6 2
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 25 52 24 1 1 2 2 3 61 66 57 2 2 2 2 2 27 31 64 1
MAX LVORI 7 6 2 1 2 3 4 5 6 5 1 1 1 3 3 5 5 5 2 1 1 3
STABILITY G A A A A F G G G A A A A G G G G A A A A G
CEILING None None None None None None None None None None
STA PRES 28.63 28.58 28.59 28.58 28.58 28.53 28.55 28.56 28.59 28.51
Date Thu 09/03/26Fri 09/04/26Sat 09/05/26Sun 09/06/26
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 73 99 70 95 66 89 62 83
TEMP 75 75 98 86 74 72 93 83 69 67 87 78 66 63 80 74
DEWPT 68 69 69 69 69 70 68 68 67 65 65 63 61 60 62 60
RH 79 82 39 57 84 93 44 61 93 93 48 60 84 90 54 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC FW SC B1 SC SC FW B1 SC SC SC SC
POP 12HR 5 10 20 40 20 30 20 20
RAIN SHWRS IS IS SC 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