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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
205 AM EST Tue Dec 9 2025
NCZ001-100900-
RAWS 310141
36.40N 81.29W Elev. 3009 ft
205 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 18 33 24 44 24
TEMP 21 19 26 31 31 28 25 28 30 32 39 44 42 38 35 30 27 25
DEWPT 20 18 23 26 28 24 23 22 23 25 28 32 32 32 29 25 22 20
MIN/MAX RH 100 83 92 61 84
RH 96 96 88 81 88 85 92 78 75 75 64 62 67 79 78 81 81 81
WIND DIR S SW S S S S SW SW SW SW SW SW W W W NW NW NW
WIND SPD 5 3 2 5 5 4 4 4 5 9 11 13 13 16 18 18 18 13
WIND GUST 21 24 24 27 32 33 31 25
CLOUDS OV B2 B1 B1 B1 SC SC B1 B2 B1 B1 B1 SC B1 B1 B1 SC B1
CLOUDS(%) 100 76 68 68 62 29 35 65 75 58 60 56 44 54 62 52 44 53
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 7 5 4 10 10 10
POP 12HR 30 0 0 20 30
RAIN S C
SNOW C C
MIX HGT <1 <1 <1 1 <1 <1 <1 <1 <1 <1 2 3 2 <1 1 1 <1 <1
T WIND DIR SW SW SW SW SW SW SW SW W SW W W W W W NW NW NW
T WIND SPD 5 3 5 8 8 4 4 5 5 8 21 34 19 12 18 26 27 23
DISPERSION PR VP VP VP PR GD GD GD GD
ADI 5 3 5 13 9 2 2 4 4 9 45 82 42 11 16 24 25 25
MAX LVORI 7 8 5 4 5 5 6 5 3 3 1 1 1 4 3 3 3 3
STABILITY D C C C D F F E E D D D D D D D D D
CEILING 400 None None 13300 10900 None None None
STA PRES 27.25 27.17 27.13 27.02 26.91 26.86 26.92 26.97
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 32 22 39 27 45 29 36 13 32
TEMP 31 29 26 26 38 33 32 28 44 36 35 29 35 24 17 14 31 24
DEWPT 20 20 20 21 25 25 28 25 26 26 26 23 19 10 5 2 6 7
RH 63 69 78 81 59 72 85 88 49 67 69 78 52 54 58 58 34 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 SC SC B1 SC SC SC SC SC FW FW FW FW SC
POP 12HR 5 10 10 10 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
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