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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EST Sat Dec 6 2025
NCZ001-070900-
RAWS 310141
36.40N 81.29W Elev. 3009 ft
631 PM EST Sat Dec 6 2025
Date 12/06/25 Sun 12/07/25 Mon 12/08/25 Tue
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 24 43 29 34 18
TEMP 33 32 28 26 26 36 42 42 36 34 33 32 31 33 33 32 29 26 24 20 19
DEWPT 28 27 25 24 25 30 33 33 32 31 31 31 31 32 31 28 26 23 21 18 16
MIN/MAX RH 93 68 99 84 93
RH 82 81 88 92 96 79 70 70 85 89 92 96100 96 92 85 88 88 88 92 88
WIND DIR NW NW W S S S S S SW NW NW N N NE NE E E SE S S SW
WIND SPD 5 6 3 3 3 4 4 3 2 2 2 3 4 5 5 4 3 2 2 2 2
CLOUDS FW FW B1 SC SC B2 B2 SC SC B1 B2 B2 OV B2 B2 B2 B2 B2 B2 B1 SC
CLOUDS(%) 10 11 60 33 36 75 70 49 32 53 76 80 88 85 85 80 77 70 73 54 43
VSBY 10 10 9 8 8 10 10 10 8 7 5 5 3 3 3 3 10 10 10
POP 12HR 0 5 20 50 10
RAIN S
SNOW S C C C C
MIX HGT <1 <1 <1 <1 <1 <1 1 <1 <1 <1 <1 <1 <1 1 1 1 <1
T WIND DIR NW NW NW W SW S S W NW NW N N NE NE NE N S
T WIND SPD 9 8 2 1 2 6 5 3 1 2 4 10 9 9 5 0 3
DISPERSION PR PR VP VP VP VP VP VP VP VP VP VP
ADI 4 4 1 1 2 6 8 3 1 1 2 5 12 13 9 0 2
MAX LVORI 5 6 7 7 6 4 3 3 6 6 6 7 7 5 5 6 6
STABILITY G G G G B C D C G F F F D D D D F
CEILING None None 13000 None 1800 500 300 300 400
STA PRES 27.15 27.15 27.17 27.13 27.14 27.14 27.22 27.24
Date 12/09Wed 12/10/25Thu 12/11/25Fri 12/12/25Sat 12/13/25
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 38 24 44 30 42 28 38 17 27
TEMP 37 29 27 29 44 38 36 30 42 38 36 29 37 30 23 17 27 19
DEWPT 22 23 23 22 29 31 29 27 29 30 32 28 26 19 15 9 10 4
RH 54 78 85 75 55 76 75 88 60 73 85 96 64 63 71 70 48 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 SC B1 B1 B1 B2 B2 B1 SC SC SC SC SC SC
POP 12HR 0 0 5 20 30 50 20 10 5
RAIN S S C C C S S
SNOW S S S C C 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