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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 AM EST Thu Dec 4 2025
NCZ003-042100-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
901 AM EST Thu Dec 4 2025
Date Thu 12/04/25 Fri 12/05/25 Sat 12/06/25
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 49 29 32 28 46
TEMP 38 49 48 39 37 36 32 31 30 31 32 32 30 29 30 31 36 44 45 39
DEWPT 26 25 26 27 27 27 28 28 29 29 30 30 30 29 29 30 34 37 38 36
MAX/MIN RH 41 100 83 99 76
RH 62 39 42 62 67 69 85 88 96 92 92 92100100 96 96 92 76 76 89
WIND DIR NW NW N N NE NE E E NE NE NE E N NW W W SW SW SW W
WIND SPD 2 4 2 3 4 5 8 8 5 3 2 1 1 1 1 1 2 3 2 1
CLOUDS SC B2 B2 B2 B2 OV OV OV OV OV OV B2 B2 B2 OV B2 B1 B1 B1 B1
CLOUDS(%) 30 74 87 84 80 99 98 98 92 93 89 83 76 82 88 82 66 67 67 62
VSBY 10 10 10 10 10 6 3 3 4 4 5 6 4 4 4 2 4 10 10 10
POP 12HR 5 90 90 10 10
FRZG DRZL C S S S S
SNOW C D D D C S
MIX HGT 1 2 <1 <1 <1 <1 <1 1 1 1 <1 <1 <1 <1 <1 <1 <1 2 1 <1
T WIND DIR NW NW N N NE NE E E NE NE NE E S W W W SW SW SW SW
T WIND SPD 4 6 3 2 6 10 10 12 9 6 4 2 1 1 1 2 3 5 6 4
DISPERSION VP VP PR PR VP VP VP VP VP
ADI 6 14 4 1 5 7 9 18 13 10 4 1 1 1 1 2 3 12 10 2
MAX LVORI 3 2 2 3 3 3 4 5 5 5 6 7 9 10 9 10 6 4 4 6
STABILITY B D C F E E D D D C C F F F F C C C C F
CEILING 6300 5100 1400 500 800 1100 9300 1400 600
STA PRES 29.08 29.11 29.07 29.03 28.93 28.93 28.90 28.90 28.86
Date Sun 12/07/25Mon 12/08/25Tue 12/09/25Wed 12/10/25
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 31 45 33 37 21 39 27 47
TEMP 33 31 44 40 37 34 36 31 24 22 36 32 30 28 43 40
DEWPT 32 30 37 36 34 31 27 23 18 15 23 25 25 24 31 31
RH 96 96 76 85 89 89 69 72 77 74 59 75 81 85 62 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 B1 B2 B2 B1 SC SC SC FW SC SC B1 B1
POP 12HR 20 30 30 30 5 5 5 10
FRZG RAIN S S
RAIN S S S C S C C
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