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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 PM EDT Tue Oct 20 2026
VAZ012-210800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
531 PM EDT Tue Oct 20 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 38 72 37 70 38
TEMP 52 46 44 41 40 56 65 68 55 49 46 42 41 58 65 68 57 49 47 44 42
DEWPT 38 39 38 37 37 43 39 40 40 40 39 37 36 38 38 38 39 39 38 36 37
MIN/MAX RH 92 32 85 33 81
RH 59 76 79 85 89 62 38 36 57 71 76 82 82 47 37 33 51 68 71 73 82
WIND DIR N N N N N N N N N NW NW NW NW NW N NW NW NW NW N N
WIND SPD 1 1 0 0 0 0 1 2 2 1 1 2 2 2 2 2 2 1 1 1 1
CLOUDS CL CL CL CL CL CL CL CL CL CL FW FW FW CL CL CL CL FW FW FW FW
CLOUDS(%) 0 0 0 0 0 0 0 0 1 3 20 11 11 1 2 1 2 11 6 12 9
VSBY 10 10 10 10 10 10 10 10 10 10 3 0 0 10 10 10 10 0 0 0
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 <1 1 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW NW N N NW
T WIND SPD 1 1 1 1 1 1 1 2 2 3 4 5 5 5 9 12 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 1 0 0 0 1 2 7 8 1 2 2 3 6 12 34 42 4
MAX LVORI 3 4 6 6 8 3 2 2 3 3 4 5 4 2 1 1 2
STABILITY G G G G A A A B G G G G B B B B G
CEILING None None None None None None None None None
STA PRES 27.46 27.43 27.41 27.36 27.36 27.34 27.38 27.37
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 67 35 61 34 66 36 70 42 67
TEMP 63 50 41 36 58 49 39 35 61 52 42 37 66 55 46 43 64 51
DEWPT 40 49 41 36 41 44 39 35 42 47 41 37 43 49 45 43 49 49
RH 43 96100100 53 83100100 49 83 96100 43 80 96100 58 93
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL CL CL CL CL CL FW FW FW FW SC FW SC 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