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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Thu Sep 3 2026
VAZ024-032000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Thu Sep 3 2026
Date Thu 09/03/26 Fri 09/04/26 Sat 09/05/26
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 98 71 97 71 92
TEMP 89 96 95 83 77 74 72 73 89 95 94 83 77 74 72 73 87 92 88 77
DEWPT 71 70 70 70 70 70 69 70 72 70 70 69 69 69 68 69 72 71 71 70
MAX/MIN RH 42 89 43 90 50
RH 56 43 45 65 79 87 90 90 57 45 46 63 76 84 87 87 61 51 57 79
WIND DIR W W W SW N N N W W W W NW W NW NW NW NW NW NW NE
WIND SPD 1 2 2 1 0 0 0 1 2 4 5 3 1 1 1 1 3 4 4 2
CLOUDS CL FW SC SC B1 SC FW CL CL FW FW SC FW SC FW SC SC B1 B1 B2
CLOUDS(%) 5 11 34 43 55 26 9 4 4 19 25 43 23 36 15 30 30 69 69 71
VSBY 10 10 10 10 7 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 30 40 10 50
RAIN SHWRS SC IS IS SC SC IS IS SC SC NM
TSTMS SC IS IS IS SC SC IS
MIX HGT 4 7 5 <1 <1 <1 <1 <1 3 7 5 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR NW W W W NW NW NW W W W W NW NW NW NW NW NW NW NW E
T WIND SPD 6 6 6 2 2 3 3 3 16 17 12 9 4 3 2 2 9 10 8 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 31 55 46 1 1 2 2 3 69140 83 4 2 2 1 2 37 57 28 2
MAX LVORI 1 1 1 3 4 5 7 6 1 1 1 3 4 5 6 6 1 1 2 4
STABILITY A A A F F G G A A A A F G G G A A B C F
CEILING None None None None None None None None None 6300
STA PRES 28.56 28.50 28.51 28.50 28.50 28.43 28.45 28.46 28.49 28.44
Date Sun 09/06/26Mon 09/07/26Tue 09/08/26Wed 09/09/26
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 64 83 60 82 58 87 62 91
TEMP 69 65 80 73 64 61 79 73 63 60 85 77 66 64 89 81
DEWPT 68 65 65 63 61 60 63 61 60 59 64 63 61 61 66 65
RH 97100 60 71 90 97 58 66 90 96 50 62 84 90 47 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B1 SC SC SC SC SC SC SC SC SC SC SC FW SC
POP 12HR 60 20 10 5 5 5 0 5
RAIN SHWRS NM IS IS
TSTMS 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