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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EST Wed Dec 3 2025
WVZ043-040900-
RAWS 465401
37.53N 81.00W Elev. 2725 ft
401 PM EST Wed Dec 3 2025
Date 12/03/25 Thu 12/04/25 Fri 12/05/25 Sat
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 26 36 25 32 31
TEMP 28 27 27 27 26 31 34 33 27 26 26 26 27 29 31 32 32 32 32 31 32
DEWPT 24 23 24 23 23 25 24 24 23 22 21 22 25 27 27 29 30 30 31 30 32
MIN/MAX RH 88 66 92 85 99
RH 85 85 88 85 88 78 66 69 85 85 81 85 92 92 85 88 92 92 96 96100
WIND DIR W W W W W W NW NW N NE E SE SE SE SE SE SE S SW W W
WIND SPD 2 2 2 3 4 6 10 6 3 2 2 4 5 5 5 4 2 2 2 2 2
CLOUDS FW FW FW FW SC SC B2 B1 B1 B2 OV B2 OV OV OV OV OV OV OV B2 B2
CLOUDS(%) 16 18 19 22 42 46 70 62 58 72 92 86 93 96 94 90 92 89 89 82 81
VSBY 10 10 10 10 10 10 9 10 10 10 8 4 2 4 10 10 10
POP 12HR 0 5 60 80 40
FRZG RAIN C
RAIN S
SNOW S C L D C C
MIX HGT <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 1 1 1 1 <1 <1
T WIND DIR W W W W W W NW NW N E SE SE SE SE S SE SE
T WIND SPD 4 2 5 5 10 14 14 12 8 2 6 10 9 10 10 4 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 3 3 8 37 33 26 4 1 3 7 13 15 15 5 2
MAX LVORI 5 5 6 5 5 3 3 3 5 5 5 5 5 5 4 5 7
STABILITY G G G G C C D D F F F E D D D D F
CEILING None None None 1200 900 3900 100 700 700
STA PRES 27.70 27.70 27.75 27.77 27.76 27.70 27.65 27.53
Date 12/06Sun 12/07/25Mon 12/08/25Tue 12/09/25Wed 12/10/25
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 40 28 40 25 31 18 37 28 43
TEMP 38 35 30 28 37 34 28 25 30 26 21 20 36 32 30 29 41 38
DEWPT 33 31 28 28 31 29 26 24 22 19 17 17 24 24 26 26 29 28
RH 82 85 92100 79 82 92 96 72 74 84 88 61 72 85 88 62 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B1 B2 B1 B1 B2 B1 B1 B1 B1 B1 SC B1 B1 B1 B1
POP 12HR 10 20 20 40 20 10 10 20 30
FRZG RAIN S
RAIN S S C S C
SNOW C S S S 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