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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EST Mon Dec 1 2025
WVZ043-012100-
RAWS 465401
37.53N 81.00W Elev. 2725 ft
631 AM EST Mon Dec 1 2025
Date Mon 12/01/25 Tue 12/02/25 Wed 12/03/25
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 39 30 38 21 39
TEMP 23 27 36 38 32 31 31 33 34 37 35 33 29 27 26 24 22 28 36 37 29
DEWPT 19 21 19 18 19 20 25 31 34 37 34 29 25 23 21 20 20 23 23 24 23
MAX/MIN RH 45 100 84 91 57
RH 84 78 50 44 58 63 78 92100100 96 85 85 85 81 84 92 81 59 59 78
WIND DIR N NE E SE SE SE SE SE SE W W NW NW NW NW NW NW W W W SW
WIND SPD 2 3 4 5 5 5 5 5 3 4 9 10 10 8 5 4 3 2 3 3 2
WIND GUST 16 20 21 19
CLOUDS SC FW FW FW SC B2 OV OV OV OV OV OV OV OV B2 B2 B1 SC FW CL FW
CLOUDS(%) 35 14 11 25 46 79 97 98 98 98 95 88 92 90 84 70 52 32 10 5 6
VSBY 10 10 10 10 10 10 7 3 3 3 5 7 10 10 10 10 10 10 10 10 10
POP 12HR 0 100 100 10 0
FRZG RAIN L
RAIN D D L S S
SNOW S
MIX HGT 1 1 2 2 <1 <1 1 <1 <1 <1 2 2 2 2 2 <1 <1 2 2 2 <1
T WIND DIR N NE SE SE SE SE SE S SE NW NW NW NW NW NW NW NW NW SW SW SW
T WIND SPD 8 3 6 13 13 17 16 13 6 10 20 26 28 25 19 10 10 5 2 3 1
DISPERSION PR PR PR PR FR PR PR VP VP
ADI 14 7 18 37 9 12 11 9 5 11 36 51 32 28 13 7 8 12 6 7 1
MAX LVORI 4 4 2 1 2 3 4 6 9 7 4 4 4 4 4 4 5 4 3 3 6
STABILITY B B C C E E E E C D D D D D E E C B B B G
CEILING None None 7900 2700 600 600 700 700 None None
STA PRES 27.91 27.78 27.67 27.47 27.39 27.40 27.53 27.60 27.65 27.62
Date Thu 12/04/25Fri 12/05/25Sat 12/06/25Sun 12/07/25
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 26 35 23 34 30 39 29 41
TEMP 27 29 34 28 24 24 32 31 33 33 37 34 32 31 40 34
DEWPT 22 24 27 23 21 22 27 29 31 33 35 31 29 29 30 29
RH 81 81 75 81 88 92 81 92 92100 92 89 88 92 67 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B2 B2 B2 B2 OV OV OV OV B2 B2 B2 B1 B1
POP 12HR 0 5 10 50 60 40 40 20
FRZG RAIN L
RAIN C L C C C S S
SLEET C L L
SNOW C 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