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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 AM EST Mon Dec 1 2025
VAZ046-012100-
RAWS 441101
37.39N 78.80W Elev. 804 ft
901 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 44 28 46 22 45
TEMP 37 43 42 34 31 31 33 32 36 41 45 39 34 30 26 24 36 43 43 34
DEWPT 21 22 22 22 22 25 29 32 36 39 39 33 27 23 21 21 26 26 26 26
MAX/MIN RH 42 100 79 89 48
RH 52 43 44 61 69 78 85100100 92 79 79 75 75 81 88 67 51 51 72
WIND DIR N NE E E E SE E NE NW W W NW NW NW NW W W SW SW SW
WIND SPD 5 5 4 2 2 2 2 2 4 5 5 5 5 4 3 2 3 4 4 3
CLOUDS CL FW SC SC B1 OV OV OV OV B2 B1 FW FW FW FW CL CL CL CL CL
CLOUDS(%) 2 12 36 43 56 93 97 98 98 78 54 15 6 6 6 5 4 4 5 4
VSBY 10 10 10 10 10 10 5 2 2 8 8 10 10 10 10 10 10 10 10 10
POP 12HR 0 90 100 10 0
FRZG RAIN S
RAIN D D L C S
MIX HGT 2 3 2 <1 <1 <1 1 <1 <1 <1 <1 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N NE E E E SE W N NE W W NW NW NW NW W N S S S
T WIND SPD 12 9 5 3 2 3 1 1 4 5 8 14 12 5 3 1 5 1 5 2
DISPERSION VP VP VP VP PR PR VP VP VP
ADI 29 29 16 2 1 2 1 1 5 6 9 7 6 3 2 1 16 4 15 1
MAX LVORI 2 2 2 3 3 4 6 10 9 6 4 4 4 4 5 6 2 2 2 3
STABILITY C C C F F F F C D D D F F F G B B C C G
CEILING None 16800 5900 200 None None None None None
STA PRES 29.59 29.51 29.31 29.05 28.99 29.19 29.30 29.40 29.38
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 49 23 36 30 48 29 47
TEMP 29 28 48 37 28 24 34 32 31 32 46 39 34 31 45 39
DEWPT 25 24 29 26 23 18 23 28 30 32 38 34 30 28 34 33
RH 85 85 47 64 81 77 64 85 96100 73 82 85 88 65 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B1 B2 B2 OV OV B2 B2 B1 B1 B1 SC SC
POP 12HR 0 0 5 40 60 40 30 10
FRZG RAIN C L
RAIN C C C C S
SLEET C
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