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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 AM EST Tue Dec 9 2025
VAZ046-092100-
RAWS 441101
37.39N 78.80W Elev. 804 ft
701 AM EST Tue Dec 9 2025
Date Tue 12/09/25 Wed 12/10/25 Thu 12/11/25
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 34 26 45 29 42
TEMP 25 31 32 29 27 29 31 32 38 45 45 43 40 38 33 30 38 41 40 33
DEWPT 14 22 26 24 26 27 29 30 33 35 36 36 34 31 27 23 24 23 22 22
MAX/MIN RH 61 96 69 80 46
RH 62 69 78 81 96 92 92 92 82 68 70 76 79 76 78 75 57 48 48 63
WIND DIR S SW SW SW SW SW SW SW SW SW SW SW W W W W W W W W
WIND SPD 2 6 6 5 8 8 10 12 12 13 12 10 10 9 9 8 10 10 9 5
WIND GUST 16 18 18 21 24 26 26 23 21 21 20 20
CLOUDS SC SC B1 SC SC SC B1 B1 B2 B2 B2 SC FW FW FW FW FW SC SC SC
CLOUDS(%) 29 45 67 48 26 38 60 56 73 78 79 40 24 25 16 8 20 39 50 42
VSBY 10 10 10 9 9 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 10 0 0
MIX HGT 1 2 2 <1 <1 <1 <1 <1 1 1 <1 <1 <1 <1 <1 <1 3 4 3 <1
T WIND DIR S SW SW S SW SW SW SW SW SW SW SW W W W W W W W W
T WIND SPD 3 9 13 5 9 9 8 17 18 17 16 13 10 9 11 10 17 17 16 6
DISPERSION PR PR PR FR FR FR PR PR PR
ADI 6 23 24 4 6 6 7 19 26 27 20 9 7 6 8 8 60 68 46 5
MAX LVORI 3 3 3 5 6 6 6 4 3 3 3 4 4 4 4 4 1 1 1 3
STABILITY B C D E E E D D D D D E E E E C C C C E
CEILING None None None 10100 5900 5700 None None None None
STA PRES 29.52 29.39 29.31 29.17 29.01 28.96 29.04 29.13 29.21 29.21
Date Fri 12/12/25Sat 12/13/25Sun 12/14/25Mon 12/15/25
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 23 41 29 48 30 41 15 34
TEMP 27 26 40 36 33 29 47 38 35 31 40 28 20 16 33 28
DEWPT 21 21 24 28 28 25 27 26 26 26 20 13 6 5 7 11
RH 78 81 52 72 82 85 45 62 69 81 44 53 54 61 33 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 B1 SC SC SC B1 SC FW FW FW FW SC
POP 12HR 5 20 10 5 20 10 5 5
RAIN S
SNOW 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