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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EST Sun Dec 7 2025
VAZ046-080900-
RAWS 441101
37.39N 78.80W Elev. 804 ft
631 PM EST Sun Dec 7 2025
Date 12/07/25 Mon 12/08/25 Tue 12/09/25 Wed
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX TEMP 27 31 13 37 29
TEMP 35 32 31 31 29 28 28 26 24 22 18 15 14 26 35 36 33 31 31 32 33
DEWPT 32 30 30 31 29 28 25 22 20 18 14 11 10 17 22 24 26 27 29 29 31
MIN/MAX RH 100 82 87 57 91
RH 89 92 96100100100 88 85 84 84 84 84 84 68 59 61 75 85 92 88 92
WIND DIR S SW N NE NE NE NE NE NE N N NW W SW SW SW SW SW SW SW SW
WIND SPD 2 2 2 6 12 12 11 9 8 5 3 2 2 4 8 8 6 8 8 9 10
WIND GUST 24 25 21 19 17 18 18 20 21
CLOUDS SC SC B2 OV OV OV OV OV OV B1 FW FW FW SC SC SC B1 SC B1 B1 B1
CLOUDS(%) 34 33 84 90 93 94 95 96 96 52 22 22 21 29 31 41 54 45 59 64 62
VSBY 9 9 2 8 4 2 2 2 3 8 10 10 10 10 10 10 10
POP 12HR 30 80 10 0 0
SNOW C D L C
MIX HGT <1 <1 <1 <1 1 2 2 2 1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR S S NE NE NE NE NE N N N NW W W W SW SW S
T WIND SPD 2 2 1 9 21 27 25 18 16 5 2 1 1 3 12 14 8
DISPERSION VP VP VP PR PR PR VP VP PR PR PR PR
ADI 1 1 1 6 32 52 52 34 11 4 1 1 1 5 31 30 5
MAX LVORI 6 7 8 8 4 4 4 3 4 5 5 6 5 3 1 1 3
STABILITY G F F E D D D D E E G G B C C C E
CEILING None 2800 1500 2800 None None None None None
STA PRES 29.37 29.38 29.47 29.50 29.55 29.54 29.54 29.38
Date 12/10Thu 12/11/25Fri 12/12/25Sat 12/13/25Sun 12/14/25
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN TEMP 50 32 46 28 44 20 35 18 35
TEMP 48 46 40 33 46 39 34 29 43 34 27 21 35 26 22 18 33 28
DEWPT 36 36 33 29 30 29 28 27 24 22 17 12 11 10 8 8 8 10
RH 63 68 76 85 53 67 78 92 47 61 65 68 36 50 54 64 34 46
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 SC B1 B1 B1 SC B1 SC SC SC FW FW FW FW FW
POP 12HR 0 5 10 40 30 20 5 5 5
RAIN C C C S 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