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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EST Wed Dec 31 2025
VAZ012-010900-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 AM EST Wed Dec 31 2025
Date 12/30/25 Wed 12/31/25 Thu 01/01/26 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 18 40 27 38 29
TEMP 21 22 29 38 38 31 31 30 29 32 34 37 38 32 30 31 30 32
DEWPT 10 10 13 14 15 17 20 23 24 25 25 23 22 23 24 26 27 28
MIN/MAX RH 63 35 81 53 88
RH 62 59 51 37 38 56 63 75 81 75 69 56 52 69 78 81 88 85
WIND DIR W W W W W W W W W W W W W W W W W W
WIND SPD 6 6 6 6 6 6 6 8 9 20 18 16 12 9 6 5 4 5
WIND GUST 18 18 19 17 17 17 20 21 21
CLOUDS B1 SC SC SC FW FW FW B1 B1 B1 B1 B1 SC SC SC SC B1 B2
CLOUDS(%) 53 39 29 31 15 9 25 52 56 60 59 54 41 27 33 38 54 70
VSBY 10 10 10 10 10 10 10 10 10 7 10 10 10 10 10 10 10 10
POP 12HR 10 0 30 5 0
FLURRIES SC SC
SNOW S C S
MIX HGT 1 1 2 3 3 1 1 1 1 2 3 3 2 <1 <1 <1 <1 <1
T WIND DIR W W W W W W W W W W NW NW W W W W SW SW
T WIND SPD 25 20 26 23 24 18 26 26 29 29 35 26 16 4 6 10 6 6
DISPERSION PR PR PR PR PR PR PR PR VP
ADI 17 27 62 69 76 8 12 24 27 55 78 60 33 3 3 5 5 8
MAX LVORI 2 2 1 1 1 2 2 3 3 3 1 1 1 3 4 4 5 4
STABILITY E C C C C F F D D D D D D E F F E D
CEILING None None None 1200 1300 None None None
STA PRES 27.07 27.02 26.98 26.99 27.07 27.11 27.15 27.11
Date 01/02Sat 01/03/26Sun 01/04/26Mon 01/05/26Tue 01/06/26
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 49 31 49 25 49 27 54 34 54
TEMP 46 42 35 32 45 39 34 29 44 40 35 31 48 46 41 37 50 47
DEWPT 31 32 31 29 28 27 24 21 18 21 23 22 28 29 33 34 34 33
RH 55 67 85 88 51 62 66 72 35 46 61 69 46 51 73 89 54 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 OV OV B2 B1 SC FW FW SC SC SC SC SC SC SC B1
POP 12HR 0 5 20 5 0 0 0 5 5
RAIN 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