National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sun Aug 23 2026

VAZ024-240800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
801 PM EDT Sun Aug 23 2026

Date           08/23/26      Mon 08/24/26            Tue 08/25/26            Wed
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                 56          85          54          87          59
TEMP                64 60 58 60 76 81 81 71 62 58 54 56 74 81 85 76 66 61 60 62
DEWPT               51 51 51 54 57 53 51 51 51 51 50 52 55 53 53 56 56 55 54 56
MIN/MAX RH                   81          33          88          33          84
RH                  63 72 77 81 52 38 35 49 67 77 86 86 51 38 33 50 70 81 81 81
WIND DIR             W  N NW NW  W  W NW NW NW NW  N NW NW  W SW SE  N  N  N  N
WIND SPD             1  0  1  1  4  5  5  3  2  1  0  1  1  2  1  1  0  0  0  0
CLOUDS              FW SC CL CL FW FW FW FW CL FW FW FW FW FW FW FW FW FW FW SC
CLOUDS(%)            7 33  1  1  6  6  8 17  4 17 10 22 18  8  8 11 12 12 11 26
VSBY                10 10  7  3 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                      0           0           0           0           0
MIX HGT             <1 <1 <1 <1  4  6  5 <1 <1 <1 <1 <1  3  5  5 <1            
T WIND DIR           W  W NW NW  W  W  W NW NW NW NW NW  N NW SW  S            
T WIND SPD           3  2  3  3 18 16 11  3  4  4  3  2  4  2  3  2            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  2  1  2  3104124 74  2  2  2  2  2 20 15 22  1            
MAX LVORI            3  3  5  4  1  1  1  2  3  4  6  6  2  2  2  2            
STABILITY            G  G  G  A  A  A  A  G  G  G  G  A  A  A  A  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            28.50 28.50 28.53 28.51 28.58 28.59 28.60 28.55            


Date           08/26Thu 08/27/26Fri 08/28/26Sat 08/29/26Sun 08/30/26
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       90      65      89      64      90      64      88      65      89
TEMP          87 78 67 67 83 77 68 67 87 79 66 67 85 77 67 67 84 79
DEWPT         64 64 65 66 69 69 67 67 67 67 65 65 67 67 66 66 68 68
RH            46 62 93 97 63 76 97100 52 67 97 93 55 71 97 97 59 69
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC B1 SC B1 B2 B1 SC SC SC SC SC FW SC SC SC SC B1
POP 12HR            5      30      60      30      10      10      20      20      20
RAIN SHWRS          SC IS SC NM SC                   IS IS       IS
TSTMS               IS       SC IS                   IS          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