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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 PM EST Wed Dec 3 2025
NCZ003-040900-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
701 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 29 51 29 33 28
TEMP 35 32 30 30 41 48 49 42 38 33 30 31 30 31 33 33 33 32 31 32
DEWPT 30 27 25 23 26 24 23 25 26 26 25 27 28 29 29 29 29 29 29 29
MIN/MAX RH 85 35 89 80 92
RH 82 81 81 75 55 39 36 50 62 75 81 85 92 92 85 85 85 88 92 88
WIND DIR N N N W NW NW N N NE NE NE E E NE E NE N W W W
WIND SPD 0 0 0 1 2 4 4 3 3 4 6 5 4 3 2 2 1 1 1 2
CLOUDS FW FW FW FW SC B2 B2 B2 B2 OV OV OV OV OV OV OV B2 OV B2 B2
CLOUDS(%) 7 7 10 14 30 74 79 81 75 92 97 94 94 94 92 92 82 88 80 77
VSBY 10 10 10 10 10 10 10 10 10 9 6 3 3 2 2 2
POP 12HR 0 5 60 90 40
RAIN SHWRS SC IS
SNOW S L D D L L
MIX HGT <1 <1 <1 <1 1 3 <1 <1 <1 <1 1 1 <1 1 <1 <1
T WIND DIR W W W W NW NW NW N NE NE NE E E NE N NE
T WIND SPD 2 2 2 2 4 6 4 3 3 10 9 9 10 5 4 3
DISPERSION VP VP VP VP VP VP PR VP VP VP VP
ADI 1 1 1 2 6 15 4 2 2 7 6 13 13 7 5 2
MAX LVORI 7 6 5 4 3 2 2 3 3 4 4 4 5 5 5 5
STABILITY G G G B B D C F F E E D D C C F
CEILING None None None 9500 8300 4000 500 400 1100
STA PRES 29.07 29.05 29.09 29.10 29.13 29.10 29.05 28.93
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 46 31 46 29 41 21 41 27 49
TEMP 45 41 35 31 45 39 35 30 40 31 24 23 39 35 30 27 45 43
DEWPT 37 36 32 31 37 35 31 27 26 24 19 18 25 27 25 24 31 31
RH 73 82 89100 73 85 85 88 57 75 81 81 57 72 81 88 58 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 10 20 20 20 20 5 0 5 10
RAIN S S 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