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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 PM EST Thu Nov 27 2025
VAZ046-280900-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1001 PM EST Thu Nov 27 2025
Date 11/27/25 Fri 11/28/25 Sat 11/29/25 Sun
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 27 42 19 44 27
TEMP 32 30 28 34 41 41 32 27 24 21 20 35 43 42 32 28 29 30 31
DEWPT 16 14 13 13 12 11 12 13 12 13 13 15 15 15 17 17 17 19 20
MIN/MAX RH 54 28 76 30 64
RH 51 51 53 41 30 29 43 55 60 71 74 43 32 33 53 63 60 63 63
WIND DIR W W W W W W W W W W W SE SE SE SE SE S S S
WIND SPD 5 6 6 11 12 9 5 5 3 2 2 2 4 3 2 2 3 3 3
WIND GUST 17 19 19 24 24 20
CLOUDS CL CL CL CL FW FW CL CL CL FW FW FW FW FW FW B1 OV OV B2
CLOUDS(%) 3 3 2 3 7 7 2 3 5 12 14 12 16 21 22 51 88 89 86
VSBY 10 10 10 10 10 10 10 10 10 10 7 7 7 5 5
POP 12HR 0 0 0 0 10
RAIN C
MIX HGT <1 <1 <1 4 5 5 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR W W W NW NW NW W W W W SW SE S S S
T WIND SPD 10 14 11 25 20 19 10 8 6 2 2 4 4 6 6
DISPERSION PR PR PR PR VP VP VP VP VP VP
ADI 5 10 9 74 66 61 5 4 3 1 2 13 15 22 3
MAX LVORI 3 2 2 1 1 1 2 2 3 3 3 2 2 2 2
STABILITY F E C D D D F F G G B B C B G
CEILING None None None None None None None 12200
STA PRES 29.44 29.51 29.56 29.67 29.73 29.75 29.68
Date 11/30Mon 12/01/25Tue 12/02/25Wed 12/03/25Thu 12/04/25
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 46 27 46 30 41 29 47 26 50
TEMP 43 43 36 28 46 36 31 31 39 38 35 30 47 36 30 28 49 40
DEWPT 32 38 31 25 25 25 25 29 35 34 31 28 31 29 26 25 32 31
RH 65 82 82 88 43 64 78 92 85 85 85 92 53 75 85 88 52 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B1 SC SC SC B2 OV B2 B2 B1 SC FW FW SC SC SC SC
POP 12HR 50 30 20 50 70 40 10 5 5
FRZG RAIN C
RAIN C C C S S L L C S
SNOW 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