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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1101 AM EDT Wed Sep 2 2026
VAZ018-022000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1101 AM EDT Wed Sep 2 2026
Date Wed 09/02/26 Thu 09/03/26 Fri 09/04/26
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 92 70 93 71 92
TEMP 92 92 80 77 74 71 73 88 93 92 80 77 73 72 73 88 92 89 78
DEWPT 69 68 68 66 66 66 66 70 69 69 68 67 67 67 68 70 70 69 68
MAX/MIN RH 47 83 45 86 48
RH 47 46 67 69 76 84 79 55 46 47 67 71 81 84 84 55 49 52 71
WIND DIR W W NW NW W NW W NW W W NW W W W W NW NW NW NW
WIND SPD 4 4 1 2 2 2 2 2 3 3 2 2 2 2 3 3 5 5 3
WIND GUST 13 16 17 13
CLOUDS FW SC SC FW CL FW CL FW FW FW CL FW FW CL SC SC SC SC SC
CLOUDS(%) 14 27 27 15 5 9 5 9 15 8 5 14 10 5 36 36 45 45 43
VSBY 10 10 10 9 8 7 6 9 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 20 20
RAIN SHWRS IS IS IS IS IS
TSTMS IS IS IS IS
MIX HGT 6 6 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 3 6 4 <1
T WIND DIR W W SW W W W W NW W W W W W W W W W NW NW
T WIND SPD 6 4 1 2 3 4 3 8 6 9 3 4 4 4 3 19 19 19 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 52 34 1 1 2 2 3 43 54 65 2 2 2 2 3 86141111 3
MAX LVORI 1 1 4 3 4 5 5 1 1 1 3 3 5 5 5 1 1 1 3
STABILITY 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
STA PRES 27.86 27.86 27.85 27.88 27.83 27.82 27.83 27.84 27.78
Date Sat 09/05/26Sun 09/06/26Mon 09/07/26Tue 09/08/26
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 70 89 64 81 61 80 62 84
TEMP 72 71 88 75 67 65 79 71 64 62 77 71 65 63 81 73
DEWPT 68 68 70 66 64 62 66 61 59 59 65 61 59 60 65 62
RH 87 90 55 74 90 90 64 71 84 90 67 71 81 90 58 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 SC SC B1 SC B1 B1 B1 SC SC SC SC
POP 12HR 20 40 30 40 20 20 10 10
RAIN SHWRS IS SC SC IS SC IS IS IS
TSTMS 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