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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EST Wed Dec 3 2025
VAZ018-032100-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
431 AM EST Wed Dec 3 2025
Date Wed 12/03/25 Thu 12/04/25 Fri 12/05/25
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 44 28 41 25 35
TEMP 25 33 42 42 31 29 29 29 29 37 40 37 30 27 26 26 26 29 33 34 31
DEWPT 20 22 23 23 22 21 20 21 21 26 26 25 21 20 19 18 19 23 26 28 26
MAX/MIN RH 45 74 57 76 72
RH 81 63 46 46 69 72 69 72 72 64 57 61 69 74 74 71 74 78 75 78 81
WIND DIR NW W W W W W W W NW W NW NW NW NW E SE SE SE S S S
WIND SPD 2 2 2 2 2 2 2 3 5 6 8 6 4 2 1 2 2 3 3 2 1
WIND GUST 12 14 18 23 24 20 16 12
CLOUDS B1 SC CL CL FW FW SC FW FW SC B1 B1 B1 B1 B1 B2 B2 B2 OV B2 B2
CLOUDS(%) 54 32 5 4 6 14 32 17 24 46 61 52 62 66 67 75 80 85 90 85 87
VSBY 10 10 10 10 9 10 10 10 10 10 9 10 10 10 10 10 10 5 3 2 1
POP 12HR 0 0 0 40 60
FRZG RAIN C
RAIN L C
SLEET C
SNOW S C L L C
MIX HGT <1 1 2 1 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 1 1 1 2 <1 <1
T WIND DIR NW W W W W W W W W W NW NW NW N E SE SE S S S S
T WIND SPD 6 5 4 6 4 5 6 8 8 23 23 17 9 2 2 10 6 8 10 3 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 7 10 12 13 2 3 3 4 6 47 51 31 6 1 1 5 9 15 21 4 2
MAX LVORI 4 3 2 2 3 3 3 3 3 1 1 1 3 3 3 3 4 4 3 4 5
STABILITY B B B B G G G G C C D D E F F F C C C C F
CEILING None None None None None None 18900 8900 1000 1400
STA PRES 27.79 27.78 27.82 27.82 27.86 27.89 27.91 27.88 27.85 27.74
Date Sat 12/06/25Sun 12/07/25Mon 12/08/25Tue 12/09/25
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 30 45 30 43 29 38 24 42
TEMP 32 34 44 36 33 31 42 33 31 30 37 30 27 26 40 35
DEWPT 28 29 35 31 28 26 31 28 25 25 28 23 21 20 27 26
RH 85 82 70 82 82 81 65 82 78 81 70 75 78 78 59 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1
POP 12HR 30 20 20 10 30 30 10 10
FRZG RAIN C
RAIN S S S S S
SLEET C S
SNOW S C C S
$$
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