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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EST Wed Dec 24 2025
VAZ018-250900-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 AM EST Wed Dec 24 2025
Date 12/23/25 Wed 12/24/25 Thu 12/25/25 Fri
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 46 58 45 64 41
TEMP 50 47 51 56 56 50 48 46 47 49 54 63 61 55 51 50 46 44
DEWPT 46 42 37 33 33 33 33 34 39 45 50 54 55 51 48 47 45 41
MIN/MAX RH 86 40 88 71 97
RH 86 83 59 42 42 52 56 63 74 86 86 72 81 86 89 89 96 89
WIND DIR NW NW NW NW NW W SW S S SW W NW NW NW N N SE SE
WIND SPD 12 9 5 3 2 1 1 2 2 3 5 9 8 5 3 1 2 4
WIND GUST 39 31 17 13 17 19 23 20 16
CLOUDS SC FW FW SC SC B2 B1 B2 OV B2 B2 B2 B2 B2 B2 OV OV OV
CLOUDS(%) 26 14 22 27 47 71 62 75 89 80 80 81 83 78 82 93 91 89
VSBY 10 10 10 10 10 10 10 10 10 8 6 7 8 9 5 5 8 6
POP 12HR 5 0 70 70 50
RAIN L L L C C D
RAIN SHWRS SC SC IS IS
MIX HGT 1 <1 1 2 <1 <1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR NW NW NW NW W SW S S SE S W W W NW
T WIND SPD 28 18 9 5 5 1 3 3 3 3 2 11 12 24
DISPERSION FR VP VP VP VP PR VP VP VP
ADI 26 21 16 16 6 1 2 2 2 3 3 23 27 11
MAX LVORI 3 3 2 2 2 2 3 3 4 6 5 3 3 5
STABILITY D C C B B F F F F C D D D F
CEILING None None None 23600 700 400 600 1500
STA PRES 27.87 27.98 27.98 27.96 27.85 27.77 27.73
Date 12/26Sat 12/27/25Sun 12/28/25Mon 12/29/25Tue 12/30/25
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 42 65 49 64 27 35 17 30
TEMP 44 42 46 51 64 54 49 51 62 51 40 28 32 23 19 17 30 23
DEWPT 37 37 42 47 54 48 46 47 52 39 26 16 9 4 2 3 5 6
RH 76 82 86 86 70 80 89 86 70 63 57 60 37 43 47 53 34 47
WIND SPD <15 <15 <15 <15 <15 <15 15> <15 <15
AVG CLOUDS OV OV OV B2 B2 B2 B2 B2 B2 B2 B1 SC FW FW FW FW FW FW
POP 12HR 80 60 10 20 60 50 10 5 0
RAIN D C L C S L 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