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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Mon Aug 31 2026
VAZ012-010800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 PM EDT Mon Aug 31 2026
Date 08/31/26 Tue 09/01/26 Wed 09/02/26 Thu
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 65 88 66 89 68
TEMP 85 75 69 67 65 68 81 85 86 78 72 69 67 69 83 88 87 79 72 70 69 70
DEWPT 65 65 64 63 61 63 67 65 65 66 65 64 63 65 67 66 66 67 66 65 64 65
MIN/MAX RH 88 49 88 47 87
RH 51 71 84 87 87 84 63 51 50 67 79 84 87 87 59 48 50 67 81 84 84 84
WIND DIR W N N N W NW NW NW NW NW N W W NW NW W W N N W W W
WIND SPD 1 0 0 0 1 1 2 2 1 1 0 1 1 1 1 1 1 0 0 1 1 1
CLOUDS SC FW SC CL CL FW FW SC FW CL FW CL FW FW FW FW FW FW FW CL CL CL
CLOUDS(%) 33 23 30 3 5 13 19 36 12 3 13 5 7 17 11 19 19 16 16 2 3 4
VSBY 10 10 10 8 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 5 5
MIX HGT 4 <1 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR NW NW SW W W W NW NW NW W W W W W NW NW NW W
T WIND SPD 8 2 1 3 2 2 11 9 5 3 3 3 3 2 9 8 5 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 41 1 1 2 1 2 61 61 37 2 2 2 2 2 51 60 37 1
MAX LVORI 1 3 6 5 6 5 1 1 1 3 4 5 6 5 1 1 1 3
STABILITY A G 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 27.39 27.40 27.40 27.43 27.37 27.38 27.39 27.42 27.36
Date 09/03Fri 09/04/26Sat 09/05/26Sun 09/06/26Mon 09/07/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 89 68 91 65 86 58 80 53 80
TEMP 88 78 69 69 85 77 67 65 81 73 62 59 75 68 58 55 75 68
DEWPT 66 67 65 65 68 67 65 65 65 63 61 59 62 59 56 55 58 56
RH 48 69 87 87 57 71 93100 58 71 97100 64 73 93100 55 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW B1 SC SC SC B1 SC SC B1 B1 SC SC SC SC
POP 12HR 10 20 30 20 40 20 30 20 10
RAIN SHWRS IS IS SC IS IS IS SC IS SC SC IS
TSTMS IS IS SC 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