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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon Aug 31 2026
VAZ018-010800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 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 68 91 70 93 71
TEMP 73 71 69 71 84 89 89 80 76 73 71 73 86 92 90 81 76 74 72 73
DEWPT 66 65 64 65 68 67 67 66 66 66 65 67 69 68 67 68 66 66 66 67
MIN/MAX RH 86 46 84 45 84
RH 79 81 84 81 59 48 48 62 71 79 81 81 57 46 47 65 71 76 81 81
WIND DIR NW W W NW NW NW NW NW NW W W NW NW NW W W W W W W
WIND SPD 1 1 2 3 4 4 4 2 2 2 2 2 1 2 2 2 2 2 2 3
WIND GUST 14
CLOUDS SC FW FW FW FW FW FW FW CL FW CL CL CL FW FW FW FW FW CL CL
CLOUDS(%) 30 16 20 18 11 18 14 9 1 13 4 4 5 12 15 13 13 8 4 5
VSBY 10 8 7 4 10 10 10 10 9 8 8 6 10 10 10 10
POP 12HR 0 5 0 10 0
MIX HGT <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 4 7 6 <1
T WIND DIR W W W W NW NW NW W W W W NW NW W W W
T WIND SPD 2 3 3 4 16 11 8 3 4 3 4 5 13 10 8 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 2 2 4 80 81 54 2 2 2 2 6 72 82 61 2
MAX LVORI 4 5 5 5 1 1 1 3 3 4 5 4 1 1 1 3
STABILITY 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
STA PRES 27.91 27.91 27.94 27.88 27.90 27.90 27.92 27.87
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 92 71 92 68 87 63 79 59 79
TEMP 91 80 72 72 89 79 71 69 84 74 67 64 76 69 62 60 76 69
DEWPT 67 68 67 68 70 67 67 66 67 64 62 60 63 59 57 56 61 57
RH 45 67 84 87 54 67 87 90 57 71 84 87 64 70 84 87 60 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW FW SC SC SC SC B1 B1 SC B1 B1 SC SC SC SC
POP 12HR 20 20 20 20 30 30 30 20 10
RAIN SHWRS IS IS IS IS IS SC SC IS SC SC IS
TSTMS IS IS IS IS 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