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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EST Wed Dec 3 2025
NCZ001-032100-
RAWS 310141
36.40N 81.29W Elev. 3009 ft
931 AM EST Wed Dec 3 2025
Date Wed 12/03/25 Thu 12/04/25 Fri 12/05/25
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 41 24 41 25 33
TEMP 31 40 40 31 28 27 26 28 37 40 38 32 29 28 27 27 28 31 32 31
DEWPT 22 24 25 21 21 18 17 17 22 23 24 24 24 23 22 24 26 28 30 28
MAX/MIN RH 52 76 50 90 81
RH 69 52 55 66 75 68 68 63 54 50 57 72 81 81 81 88 92 88 92 88
WIND DIR S SW W W NW NW NW NW NW NW NW N N SE SE SE SE S S SW
WIND SPD 2 3 3 2 2 3 4 5 8 10 6 4 2 1 2 3 3 4 3 2
CLOUDS FW FW CL CL CL FW SC SC B1 B2 B2 B1 B2 B2 B2 OV OV OV OV OV
CLOUDS(%) 13 16 4 3 5 19 32 34 58 82 76 67 74 81 86 92 90 93 90 89
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 8 2 2 1 1
POP 12HR 0 0 0 50 70
FRZG RAIN C
RAIN C
SNOW C L L L C
MIX HGT <1 2 2 <1 <1 <1 <1 <1 1 2 1 <1 <1 <1 1 1 1 <1 <1 <1
T WIND DIR SW W W NW NW NW NW NW NW NW NW N E S S S S S SW S
T WIND SPD 3 4 4 3 4 8 8 8 13 19 11 4 2 9 10 6 8 6 2 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 4 13 9 2 2 4 4 6 19 37 18 3 1 4 5 8 10 8 2 1
MAX LVORI 3 2 2 3 4 3 3 3 2 1 2 3 5 4 4 5 5 5 7 7
STABILITY B B B G G G F C D D D E F F F C C D C F
CEILING None None None 7000 5200 4100 1600 400 300
STA PRES 27.19 27.24 27.24 27.27 27.28 27.29 27.27 27.25 27.14
Date Sat 12/06/25Sun 12/07/25Mon 12/08/25Tue 12/09/25
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 30 42 28 41 26 35 22 39
TEMP 31 32 40 36 32 30 39 33 29 27 34 30 26 24 37 33
DEWPT 31 31 35 32 30 28 31 28 27 26 28 24 22 21 26 26
RH 100 96 82 85 92 92 73 82 92 96 78 78 85 88 64 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 SC
POP 12HR 30 20 20 10 30 20 5 5
FRZG RAIN C S
RAIN S S S S S
SNOW C 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
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