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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EST Thu Dec 11 2025
VAZ024-112100-
RAWS 441631
37.63N 79.51W Elev. 865 ft
401 AM EST Thu Dec 11 2025
Date Thu 12/11/25 Fri 12/12/25 Sat 12/13/25
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 38 25 36 29 43
TEMP 28 32 37 36 29 26 26 26 26 30 34 36 33 31 31 31 30 35 41 41 35
DEWPT 20 21 20 21 21 20 21 22 22 26 28 29 29 29 28 27 26 28 27 28 26
MAX/MIN RH 50 89 75 91 56
RH 71 63 50 54 72 78 81 85 85 85 78 75 85 92 88 85 85 75 57 59 69
WIND DIR W NW NW W W W SW SW SW S S S S SW SW W W W W W W
WIND SPD 6 8 8 6 3 2 2 1 2 2 3 2 1 1 2 3 3 4 5 3 3
WIND GUST 23 23 20 19 14
CLOUDS CL CL FW FW FW SC B2 B2 OV OV OV B2 B2 B2 B2 B2 B1 SC B1 B1 B2
CLOUDS(%) 5 3 13 8 20 41 83 87 94 98 90 87 82 87 81 73 64 45 65 67 74
VSBY 10 10 10 10 7 7 6 4 2 5 8 8 8 3 8 10 10 8 8 8 8
POP 12HR 0 20 70 10 0
SNOWSHWRS IS SC NM SC SC
MIX HGT <1 4 4 4 <1 <1 <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 3 3 2 <1
T WIND DIR NW NW NW W W W W W S S S SE SE SE SE S SW W W W W
T WIND SPD 14 27 18 17 11 6 9 4 4 6 10 5 5 5 4 5 6 20 14 9 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 16 98 71 62 5 3 4 2 4 13 22 11 3 3 2 3 7 63 35 20 2
MAX LVORI 3 1 1 1 3 4 4 5 6 4 3 4 5 6 6 6 4 3 1 2 3
STABILITY C C C C G F F F C C C C F F F F C C D C F
CEILING None None None 5300 900 900 300 300 None 12600
STA PRES 28.36 28.39 28.44 28.43 28.43 28.42 28.47 28.49 28.57 28.58
Date Sun 12/14/25Mon 12/15/25Tue 12/16/25Wed 12/17/25
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 26 27 10 33 17 43 24 49
TEMP 32 27 25 16 14 11 30 24 20 17 40 32 27 26 46 39
DEWPT 27 21 7 3 2 4 8 11 9 10 15 19 18 20 27 30
RH 81 78 46 56 58 73 39 57 62 73 36 58 68 78 47 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 SC FW FW FW FW FW FW FW SC FW SC SC SC B1
POP 12HR 30 20 0 0 0 0 0 5
SNOWSHWRS SC 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