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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 PM EST Wed Dec 3 2025
NCZ003-040900-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
701 PM EST Wed Dec 3 2025
Date 12/03/25 Thu 12/04/25 Fri 12/05/25 Sat
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 27 36 28
TEMP 33 31 30 30 41 48 47 39 35 32 29 30 31 34 36 34 31 31 29 31
DEWPT 28 26 24 23 26 25 24 26 26 27 26 27 30 30 31 31 31 31 29 31
MIN/MAX RH 80 38 92 81 100
RH 82 81 78 75 55 40 40 59 69 81 88 88 96 85 82 89100100100100
WIND DIR N NW NW NW NW NW NW N N NE E E E SE SE N N N N NW
WIND SPD 0 1 1 2 3 5 5 2 2 1 1 2 2 2 1 0 0 0 0 1
CLOUDS FW FW FW FW SC B2 B1 B1 B2 OV OV OV OV OV OV OV B2 B2 B2 B2
CLOUDS(%) 7 6 9 10 45 70 69 69 76 93 94 93 95 95 91 93 82 83 77 72
VSBY 10 10 10 10 10 10 10 10 10 8 5 2 2 2 2 3
POP 12HR 0 0 60 90 30
RAIN C S
SNOW S L D D C
MIX HGT <1 <1 <1 <1 2 3 2 <1 <1 <1 2 2 2 1 1 <1
T WIND DIR NW NW NW NW NW NW NW N NE E E E E E NE SE
T WIND SPD 3 5 5 6 9 11 10 5 3 8 9 10 9 4 1 1
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 3 3 7 20 29 27 3 2 4 4 22 18 8 2 1
MAX LVORI 5 5 4 3 2 2 2 3 4 5 5 4 5 5 5 7
STABILITY G G G B B D C F F F F C C C C F
CEILING None None None 7900 13800 4000 600 900 1100
STA PRES 28.18 28.17 28.20 28.23 28.25 28.21 28.16 28.04
Date 12/06Sun 12/07/25Mon 12/08/25Tue 12/09/25Wed 12/10/25
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 48 31 48 29 42 21 44 27 51
TEMP 48 40 35 31 47 39 35 30 41 32 25 23 42 36 30 30 48 43
DEWPT 38 36 33 31 38 35 31 27 27 24 21 19 26 26 25 24 31 30
RH 68 85 92100 71 85 85 88 57 72 84 84 53 67 81 78 51 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR 10 20 20 20 20 5 5 5 10
RAIN S S S S 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