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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Thu Sep 3 2026
VAZ012-032000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
301 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 93 66 92 65 88
TEMP 68 69 83 88 88 76 72 70 68 69 83 87 86 75 71 69 67 68 81 87 83 73
DEWPT 63 64 68 66 66 67 66 65 63 64 69 67 68 67 66 65 63 65 69 68 68 67
MAX/MIN RH 44 86 47 92 54
RH 84 84 61 48 48 74 81 84 84 84 63 52 55 76 84 87 87 90 67 53 61 81
WIND DIR NW W NW W W N N W W W W NW W W W W W W NW NW NW NW
WIND SPD 1 1 1 1 1 0 0 1 1 1 2 2 2 1 1 1 2 2 2 3 2 2
CLOUDS FW FW FW FW FW FW FW CL CL CL FW SC SC SC FW FW FW FW SC SC SC B1
CLOUDS(%) 8 7 7 22 22 16 22 1 1 5 11 34 35 30 23 10 15 21 29 48 48 61
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 7 10 10 10 10
POP 12HR 5 5 20 10 20
RAIN SHWRS IS IS IS SC
TSTMS IS IS IS IS
MIX HGT <1 <1 5 6 5 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR W W NW W W SW SW W W W NW NW W W W W W W NW NW NW NW
T WIND SPD 2 2 4 3 2 2 3 4 4 3 10 12 10 3 2 5 3 3 10 11 9 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 26 27 15 1 2 2 2 3 56 87 62 2 1 3 2 3 40 68 39 2
MAX LVORI 5 5 2 2 2 3 5 5 5 6 1 1 1 4 5 6 7 6 1 1 1 5
STABILITY G A A A A G G G G A A A A G G G G A A A A F
CEILING None None None None None None None None None None
STA PRES 27.37 27.31 27.32 27.32 27.34 27.27 27.26 27.26 27.27 27.24
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 61 82 56 79 55 84 58 86
TEMP 66 62 77 69 61 59 75 69 60 58 80 73 62 60 81 74
DEWPT 65 62 66 63 59 58 63 61 57 56 62 62 58 58 64 63
RH 97100 69 81 93 96 66 76 90 93 54 68 87 93 56 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC B1 B2 SC SC B1 B1 SC SC SC SC SC FW SC SC
POP 12HR 40 60 20 10 5 10 0 20
RAIN SHWRS SC IS SC NM IS IS
TSTMS 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