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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EST Tue Dec 2 2025
NCZ003-030900-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 PM EST Tue Dec 2 2025
Date 12/02/25 Wed 12/03/25 Thu 12/04/25 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 24 47 27 49 26
TEMP 33 30 27 26 37 45 46 35 31 30 29 30 43 48 46 38 33 31 30 29
DEWPT 28 25 23 23 27 29 31 30 26 24 21 22 27 27 29 29 27 26 24 25
MIN/MAX RH 91 53 84 44 83
RH 82 81 85 88 67 53 55 82 81 78 72 72 53 44 51 70 78 81 78 85
WIND DIR NW NW NW NW NW S S N NW NW NW NW NW NW NW N N N E E
WIND SPD 4 3 2 2 1 2 1 0 1 1 2 2 4 5 4 2 1 1 1 2
WIND GUST 16
CLOUDS FW FW FW FW FW FW FW FW FW FW FW SC B1 B2 B2 B1 B1 B2 B2 B2
CLOUDS(%) 19 17 8 7 6 7 11 7 6 22 23 41 65 70 80 69 56 70 81 86
VSBY 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 30
RAIN L
SNOW C C L
MIX HGT <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N NW NW NW NW SW SW SW NW NW NW NW NW NW NW NW
T WIND SPD 18 18 14 9 4 4 3 2 2 4 6 8 19 19 14 10
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 8 8 7 10 10 16 7 1 1 2 3 8 33 43 30 5
MAX LVORI 4 4 5 5 3 2 3 5 5 4 3 3 1 1 2 3
STABILITY F G G B B B B G G G G B D D D F
CEILING None None None None None 6800 8500 22500
STA PRES 28.06 28.14 28.13 28.17 28.17 28.21 28.24
Date 12/05Sat 12/06/25Sun 12/07/25Mon 12/08/25Tue 12/09/25
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 29 50 28 46 29 43 24 44
TEMP 37 36 33 33 47 42 35 30 46 39 33 30 42 35 29 25 42 37
DEWPT 29 31 32 32 37 34 31 28 32 32 29 27 29 27 24 23 27 28
RH 72 82 96 96 68 73 85 92 58 76 85 88 60 72 81 92 55 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC B1 B1
POP 12HR 60 40 20 10 5 20 20 10 10
RAIN L L C S S
RAIN SHWRS IS
SNOW L S
SNOWSHWRS IS
$$
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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