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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1101 PM EST Tue Dec 9 2025
NCZ006-100900-
RAWS 310801
36.37N 79.29W Elev. 580 ft
1101 PM EST Tue Dec 9 2025
Date 12/09/25 Wed 12/10/25 Thu 12/11/25 Fri
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 28 50 30 45 25
TEMP 31 32 33 39 47 47 44 41 37 35 31 38 43 43 34 29 27 27 27
DEWPT 27 28 29 34 35 36 37 35 32 28 25 26 24 24 24 23 22 23 23
MIN/MAX RH 92 60 79 44 85
RH 85 85 85 82 63 65 76 79 82 75 78 62 47 47 66 78 81 85 85
WIND DIR SW SW SW SW SW SW SW W W W W NW NW W NW NW W W SW
WIND SPD 4 5 6 11 12 10 5 5 5 5 4 6 8 5 2 1 1 1 2
WIND GUST 23 24 20
CLOUDS B1 B2 B2 B2 B1 B1 FW FW FW FW FW FW FW FW FW FW SC B1 B2
CLOUDS(%) 65 72 73 85 65 55 23 20 20 16 16 19 20 13 14 15 45 63 75
VSBY 10 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 0 5
MIX HGT <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 4 4 4 <1
T WIND DIR SW SW SW SW S SW W W W NW NW NW NW W W
T WIND SPD 9 14 16 16 20 17 11 11 12 12 10 23 17 16 5
DISPERSION VP PR PR PR PR PR VP VP VP VP
ADI 6 10 18 26 37 30 5 5 6 6 8 87 68 59 3
MAX LVORI 6 5 4 3 1 2 4 4 4 4 4 1 1 1 3
STABILITY E E D D D D F F F F C C C C G
CEILING 7700 7700 None None None None None None
STA PRES 29.27 29.11 28.99 29.06 29.18 29.32 29.36
Date 12/12Sat 12/13/25Sun 12/14/25Mon 12/15/25Tue 12/16/25
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 47 29 56 40 50 19 40 23 46
TEMP 44 38 34 31 53 43 43 42 48 34 24 20 36 30 27 25 44 36
DEWPT 27 30 30 29 35 38 40 38 31 20 12 9 12 16 15 15 20 24
RH 51 73 85 92 50 82 89 86 51 56 60 62 36 55 60 65 38 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 SC SC SC FW FW SC SC SC FW FW FW FW FW SC SC SC SC
POP 12HR 10 5 0 20 20 5 0 10 10
RAIN 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