Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Wed Sep 23 2026
WVZ043-240800-
RAWS 465401
37.53N 81.00W Elev. 2725 ft
831 PM EDT Wed Sep 23 2026
Date 09/23/26 Thu 09/24/26 Fri 09/25/26 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
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 50 60 43 66 43
TEMP 55 54 52 51 52 57 60 55 50 47 44 43 57 64 65 55 49 46 44 44
DEWPT 52 50 49 48 52 54 53 51 49 46 44 43 46 44 47 46 45 43 42 42
MIN/MAX RH 100 78 99 48 95
RH 90 86 89 89100 90 78 86 96 96100100 67 48 52 72 86 89 93 93
WIND DIR E E E E E E NE E NE NE NE NW N N N NW N NW NW NW
WIND SPD 6 6 6 5 5 4 4 2 2 1 1 1 3 5 8 5 3 1 1 1
WIND GUST 20 18 18 16
CLOUDS B2 OV B2 B2 B2 B1 SC FW FW CL CL CL CL FW CL CL CL FW FW CL
CLOUDS(%) 81 89 87 79 73 61 26 14 23 0 2 1 4 6 0 5 3 10 10 4
VSBY 6 6 5 4 6 8 10 10 10 10 10
POP 12HR 80 40 0 0 0
RAIN L L D C
Obvis PF PF PF PF
MIX HGT 1 1 1 1 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR E E E E E E NE NE E E N NW N N N N
T WIND SPD 16 16 13 11 11 11 11 2 2 2 2 1 8 8 11 5
DISPERSION PR PR PR VP VP VP VP PR VP VP VP
ADI 11 11 9 17 20 28 46 1 1 1 1 1 23 34 48 3
MAX LVORI 5 5 5 5 5 4 3 6 7 8 10 10 3 1 1 3
STABILITY E E E D D D B G G G G A B B B F
CEILING 400 300 400 None None None None None None
STA PRES 27.88 27.88 27.88 27.83 27.84 27.83 27.82 27.78
Date 09/26Sun 09/27/26Mon 09/28/26Tue 09/29/26Wed 09/30/26
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 45 66 47 70 48 73 54 76
TEMP 65 56 48 46 65 57 49 48 68 59 51 49 72 63 55 55 74 68
DEWPT 46 48 47 46 49 50 49 47 52 53 50 49 56 57 54 54 63 62
RH 50 74 96100 56 77100 96 57 80 96100 57 81 96 96 69 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL FW FW FW FW FW SC FW FW FW SC FW FW SC SC
POP 12HR 0 0 0 0 0 0 5 0 20
RAIN SHWRS 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