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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 AM EST Sun Dec 7 2025
VAZ018-072100-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
831 AM EST Sun Dec 7 2025
Date Sun 12/07/25 Mon 12/08/25 Tue 12/09/25
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 46 31 34 18 40
TEMP 35 45 44 35 34 34 33 31 33 32 29 26 24 21 19 19 29 39 40 33
DEWPT 30 33 34 31 30 30 31 31 31 28 24 19 15 13 12 13 20 25 26 24
MAX/MIN RH 61 97 73 81 57
RH 82 62 68 85 85 85 92100 92 85 81 74 68 71 74 77 69 57 57 69
WIND DIR SW S SW NW NW N N NE E E E E E S S SW SW S S SW
WIND SPD 1 2 2 1 1 2 2 2 3 4 3 2 1 1 1 2 2 4 4 4
WIND GUST 12 13 16 17
CLOUDS B2 B1 SC SC B2 OV OV B2 B2 OV B2 B2 B2 B1 SC SC SC SC SC SC
CLOUDS(%) 75 57 50 40 75 92 89 84 87 91 84 75 72 57 49 47 38 37 34 43
VSBY 10 10 10 9 9 9 7 1 1 2 2 9 6 9 10 10 10 10 10 10
POP 12HR 5 40 70 10 0
RAIN C
SNOW C L L C C
MIX HGT <1 2 <1 <1 <1 <1 <1 <1 1 2 1 <1 <1 <1 <1 <1 1 2 1 <1
T WIND DIR SW SW SW S NW NW NE E E E E E E S SW S SW SW S S
T WIND SPD 2 6 3 2 2 2 3 9 13 10 4 4 3 2 4 2 6 12 10 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 16 4 1 1 1 2 11 22 18 8 2 2 1 2 2 10 31 15 4
MAX LVORI 3 2 3 5 5 5 7 6 5 4 4 4 3 3 3 4 3 1 2 3
STABILITY C C B G F F F C C D C F F F F B B C C E
CEILING None 7300 6200 0 700 100 None None None
STA PRES 27.76 27.78 27.78 27.83 27.85 27.89 27.85 27.81 27.69
Date Wed 12/10/25Thu 12/11/25Fri 12/12/25Sat 12/13/25
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 29 48 32 44 32 39 18 28
TEMP 32 35 48 41 39 34 44 37 37 35 39 29 23 18 27 19
DEWPT 23 25 33 32 31 26 29 29 30 29 26 16 8 7 8 3
RH 69 66 56 70 73 72 55 72 75 78 59 58 52 61 44 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B2 B2 B1 B2 B2 B2 B1 B1 B1 B1 SC SC
POP 12HR 0 10 30 30 60 40 30 10
RAIN C S C L L C C
SNOW S L L C C 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