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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 PM EST Wed Dec 10 2025
VAZ018-102100-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1231 PM EST Wed Dec 10 2025
Date Wed 12/10/25 Thu 12/11/25 Fri 12/12/25
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 47 25 31 23 36
TEMP 45 43 36 33 31 27 26 28 30 28 25 24 24 25 26 30 33 34 32
DEWPT 28 33 32 28 24 20 18 18 18 17 17 16 17 17 19 23 27 28 28
MAX/MIN RH 50 84 60 77 71
RH 51 67 85 82 75 74 71 66 60 63 71 71 74 71 74 75 78 78 85
WIND DIR W W W W NW NW NW NW NW W W W W W SW SW SW SW SW
WIND SPD 11 10 11 14 17 17 16 14 12 11 9 8 5 5 4 5 5 5 5
WIND GUST 31 32 37 43 44 47 37 33 26 25 23 20 16 16
CLOUDS B2 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B2 B2 B2 B2 OV B2 B2
CLOUDS(%) 70 65 57 61 51 49 40 37 39 39 51 59 78 79 75 85 88 86 81
VSBY 8 6 7 8 9 10 10 9 9 9 10 10 10 10 10 10 10
POP 12HR 50 40 5 10 40
RAIN S C C
SNOW S
SNOWSHWRS SC SC SC SC IS
MIX HGT 2 2 <1 1 2 2 2 2 3 2 1 1 <1 1 <1 1 2 1 <1
T WIND DIR SW W W W NW NW NW NW NW W W W W W SW SW W W W
T WIND SPD 23 20 19 35 36 39 41 39 32 24 14 10 9 6 6 6 20 16 6
DISPERSION FR GD GD GD PR PR PR PR PR
ADI 42 40 18 32 41 53 70 84 77 52 13 9 6 5 8 10 35 22 5
MAX LVORI 1 3 4 3 3 3 3 1 1 1 3 3 3 3 4 4 3 3 5
STABILITY D D D D D D D D D D D D E E D D D D E
CEILING 5700 None None None None 1600 1300 2300 500
STA PRES 27.30 27.36 27.47 27.61 27.66 27.69 27.67 27.61 27.61
Date Sat 12/13/25Sun 12/14/25Mon 12/15/25Tue 12/16/25
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 39 23 29 10 31 18 41
TEMP 32 31 37 30 31 28 27 17 14 12 29 22 22 23 39 32
DEWPT 28 27 28 27 30 25 13 7 0 1 5 10 9 11 17 20
RH 85 85 70 88 96 88 55 64 53 60 35 59 57 59 40 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B1 B1 B2 SC SC SC FW FW FW SC SC SC SC
POP 12HR 20 0 20 10 5 5 5 5
SNOWSHWRS IS IS
$$
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