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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 AM EST Tue Dec 9 2025
NCZ005-100900-
RAWS 310540
36.38N 79.70W Elev. 858 ft
101 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 36 28 50 30
TEMP 23 19 27 33 35 32 29 31 32 34 40 49 50 44 42 38 34 31
DEWPT 23 18 22 27 28 27 28 30 30 31 34 35 35 36 35 31 28 25
MIN/MAX RH 100 74 98 56 82
RH 100 96 81 78 75 81 96 96 92 89 79 58 56 73 76 76 78 78
WIND DIR N N E SW SW SW SW SW SW SW SW SW SW W W W W W
WIND SPD 4 3 2 4 5 4 5 6 10 11 13 13 11 9 9 6 5 5
WIND GUST 25 25 21
CLOUDS SC SC SC B1 B1 SC FW SC B1 B1 B1 B1 B1 SC FW FW FW FW
CLOUDS(%) 43 31 31 55 65 35 20 42 69 65 61 69 53 36 19 22 22 18
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 0 0 5 0
FLURRIES
SNOW
MIX HGT <1 <1 1 2 2 <1 <1 <1 <1 <1 2 2 2 <1 <1 <1 <1 <1
T WIND DIR NE NE SE SW SW SW SW SW SW SW SW SW SW SW W W NW NW
T WIND SPD 9 4 2 6 12 5 8 9 10 12 17 19 10 11 11 6 13 13
DISPERSION VP VP PR PR FR PR PR PR PR
ADI 6 5 4 17 29 3 4 6 9 14 30 37 17 8 8 3 6 11
MAX LVORI 8 7 5 3 3 5 8 6 5 5 3 1 2 3 4 4 4 4
STABILITY E B B C C F F E D D D D D E E F F C
CEILING None None None None 16000 12900 None None None
STA PRES 29.50 29.50 29.38 29.32 29.20 29.07 28.97 29.06 29.13
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 45 26 45 30 53 35 46 18 36
TEMP 43 37 30 29 44 40 36 31 50 43 39 35 45 32 23 19 33 30
DEWPT 23 24 23 24 25 28 30 27 28 29 31 30 22 15 8 5 6 11
RH 45 59 75 81 47 62 79 85 42 57 73 82 40 49 52 54 31 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 B1 SC SC FW FW SC SC SC FW FW FW FW SC
POP 12HR 0 5 5 5 5 10 10 5 5
$$
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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