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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 AM EST Tue Dec 2 2025
VAZ046-022100-
RAWS 441101
37.39N 78.80W Elev. 804 ft
701 AM EST Tue Dec 2 2025
Date Tue 12/02/25 Wed 12/03/25 Thu 12/04/25
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EST 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
MAX/MIN TEMP 45 22 46 27 49
TEMP 34 41 45 39 34 29 26 25 37 44 43 34 31 30 29 29 41 48 46 38
DEWPT 34 40 40 33 28 24 22 22 27 28 28 28 26 26 25 25 28 29 28 27
MAX/MIN RH 79 89 51 88 47
RH 100 96 82 79 78 81 85 88 67 53 55 78 81 85 85 85 59 47 49 64
WIND DIR NW W W NW NW NW W SW SW SW SW SW SW SW SW W W W NW NW
WIND SPD 4 5 5 5 5 4 2 2 2 5 4 3 4 4 5 5 6 10 6 5
WIND GUST 16
CLOUDS OV B2 SC FW CL CL CL CL CL CL CL CL CL FW FW SC B1 B1 B1 B1
CLOUDS(%) 94 78 35 14 4 5 3 1 2 3 5 3 5 12 24 41 55 58 63 51
VSBY 2 6 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 100 0 0 0 0
FRZG RAIN
RAIN D C
MIX HGT <1 <1 <1 <1 <1 <1 <1 <1 2 3 1 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NW NW W NW NW NW W W NW SW SW S SW SW SW SW W W NW NW
T WIND SPD 16 3 8 14 6 4 2 2 1 4 6 3 4 4 4 5 18 21 16 3
DISPERSION PR PR VP VP VP VP VP PR PR
ADI 18 4 6 7 3 2 1 2 2 14 12 2 2 2 2 4 31 53 37 2
MAX LVORI 5 6 4 4 4 5 6 6 3 2 2 4 5 5 5 5 1 1 1 3
STABILITY D D C F F F G B B C C G F F F C D D D E
CEILING 200 None None None None None None None None 9300
STA PRES 29.09 29.02 29.20 29.30 29.39 29.36 29.40 29.37 29.40 29.43
Date Fri 12/05/25Sat 12/06/25Sun 12/07/25Mon 12/08/25
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MIN/MAX TEMP 22 37 28 50 27 46 27 41
TEMP 28 23 35 32 30 29 48 39 32 28 45 36 31 28 39 32
DEWPT 20 16 21 25 27 28 36 32 27 25 30 29 26 24 25 23
RH 71 74 56 75 88 96 63 76 81 88 55 75 81 85 57 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B2 B2 B2 B2 B1 SC SC B1 SC SC SC B1 B1 SC
POP 12HR 5 30 40 20 20 10 10 10
FRZG RAIN C C
RAIN C S S S S
SNOW S C
$$
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
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