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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Oct 21 2026
VAZ012-220800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 AM EDT Wed Oct 21 2026
Date 10/20/26 Wed 10/21/26 Thu 10/22/26 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
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 41 64 42 62 33
TEMP 43 41 56 64 63 52 48 45 43 43 55 62 60 49 43 40 36 35
DEWPT 35 35 39 36 38 39 38 39 38 38 39 35 36 36 34 35 34 33
MIN/MAX RH 79 35 85 37 98
RH 73 79 53 35 39 61 68 79 82 82 55 36 41 61 70 82 92 92
WIND DIR N N N N N N N N NW N NW N N NW NW N N N
WIND SPD 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 1 0 0
CLOUDS CL CL CL CL CL CL CL CL FW FW FW CL CL CL CL CL FW FW
CLOUDS(%) 3 3 2 3 3 2 4 5 15 14 15 3 3 1 3 3 9 7
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 5 0 1
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 2 4 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1
T WIND DIR N NW N N N NW NW NW NW NW NW N NW NW NW NW NW W
T WIND SPD 1 1 5 11 10 6 5 5 4 5 10 9 11 9 5 3 2 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 11 50 40 3 3 3 2 6 23 33 40 4 3 2 1 2
MAX LVORI 4 4 2 1 1 3 5 6 9 8 2 1 1 3 3 5 7 6
STABILITY G A A B B G G G G B B B B G G G G A
CEILING None None None None None None None None None
STA PRES 27.42 27.42 27.36 27.36 27.33 27.36 27.35 27.40 27.43
Date 10/23Sat 10/24/26Sun 10/25/26Mon 10/26/26Tue 10/27/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 64 32 60 32 63 35 68 39 68
TEMP 61 52 39 33 57 48 36 33 59 51 41 36 64 54 44 40 64 55
DEWPT 40 41 38 33 36 37 35 33 39 40 37 34 39 43 40 39 44 45
RH 46 66 96100 45 65 96100 47 66 85 92 40 66 86 96 48 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL FW FW CL CL FW FW FW FW FW SC FW FW SC SC SC
POP 12HR 0 0 0 0 0 0 0 0 0
$$
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