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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EST Tue Dec 9 2025
NCZ003-100900-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
1231 AM EST Tue Dec 9 2025
Date 12/08/25 Tue 12/09/25 Wed 12/10/25 Thu
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 21 34 26 48 30
TEMP 25 24 22 26 31 33 31 27 28 30 31 36 46 47 43 40 37 33 30
DEWPT 22 22 21 23 25 27 27 27 27 29 30 33 35 35 35 33 30 26 22
MIN/MAX RH 99 77 99 62 76
RH 88 92 96 88 78 78 85100 96 96 96 89 65 63 73 76 75 75 72
WIND DIR NE E NE S SW SW SW SW SW SW SW SW SW SW W W W W NW
WIND SPD 8 4 3 2 4 4 4 5 5 8 9 9 10 10 12 12 11 10 8
WIND GUST 19 20
CLOUDS B1 B2 SC SC B1 B1 SC FW B2 B2 OV B1 B2 B1 SC FW SC FW SC
CLOUDS(%) 57 75 32 37 51 54 34 19 72 81 90 65 70 57 37 24 39 24 31
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 10 10
SNOW
MIX HGT 1 1 <1 2 2 2 <1 <1 <1 <1 <1 1 2 1 <1 <1 <1 <1 <1
T WIND DIR NE E E S SW SW SW SW SW SW SW SW SW SW SW W W NW NW
T WIND SPD 8 4 6 3 8 11 6 8 10 10 10 11 13 6 5 6 6 13 8
DISPERSION PR VP VP PR PR PR FR FR FR FR
ADI 7 3 8 7 22 22 3 4 7 9 11 18 26 10 5 6 5 9 6
MAX LVORI 5 8 6 5 3 3 5 9 6 6 5 4 2 2 4 4 4 3 3
STABILITY D E B B C D F F E D D D D D D D E E C
CEILING 22400 None None None 400 300 None None None
STA PRES 29.15 29.15 29.04 28.99 28.87 28.74 28.65 28.73 28.81
Date 12/11Fri 12/12/25Sat 12/13/25Sun 12/14/25Mon 12/15/25
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 42 27 44 30 50 34 44 18 34
TEMP 40 35 30 29 41 39 35 31 48 42 38 34 42 31 22 19 31 29
DEWPT 23 23 23 23 25 28 29 26 28 29 30 27 21 15 7 5 6 10
RH 50 61 75 78 52 64 78 81 46 60 73 75 43 51 52 54 34 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 SC SC SC SC FW SC B1 SC FW FW FW FW SC
POP 12HR 0 5 10 5 5 20 10 5 5
RAIN 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