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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Mon Aug 17 2026

VAZ024-172000-
RAWS 441631
37.63N  79.51W Elev. 865 ft
801 AM EDT Mon Aug 17 2026

Date             Mon 08/17/26            Tue 08/18/26            Wed 08/19/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 93          68          91          63          92
TEMP                85 91 89 79 74 72 70 71 83 89 88 79 71 67 64 66 82 89 91 83
DEWPT               71 70 70 72 72 71 69 71 71 70 68 67 66 64 63 64 66 65 65 65
MAX/MIN RH                   48         100          50          97          41
RH                  63 50 54 79 93 97 97100 67 54 52 67 84 90 97 93 58 45 42 55
WIND DIR            NW NW  W  W  W  W  W  W  N NW NW NW NW  N  N  N  W  W  W  W
WIND SPD             5  4  4  2  1  1  1  1  2  3  3  2  1  0  0  0  1  3  3  1
WIND GUST           16                                                         
CLOUDS              SC B1 B2 B2 B1 SC FW FW FW SC SC FW FW FW FW FW CL FW FW FW
CLOUDS(%)           36 66 70 74 68 38 12 15 20 42 28 12 17 17  8  8  5  6 11 13
VSBY                10 10 10 10  5  1  1  1 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     40          40          20           0           0
RAIN SHWRS                SC SC IS             IS IS                           
TSTMS                     SC IS                IS                              
MIX HGT              3  4  3 <1 <1 <1 <1 <1  4  5  5 <1 <1 <1 <1 <1  4  5  6 <1
T WIND DIR          NW NW  W NW NW NW NW  N  N NW NW NW NW  N  N NW SW  W  W SW
T WIND SPD          17 14 10  1  2  3  3  6  5  3  5  8  4  4  3  3  4  6  8  2
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                 74 54 33  1  1  2  2  7 28 22 35  4  2  2  2  3 23 43 58  1
MAX LVORI            1  1  1  4  7  8 10  8  3  2  1  3  5  6  8  6  2  1  1  3
STABILITY            A  C  C  F  F  G  G  A  A  A  A  G  G  G  G  A  A  A  A  G
CEILING              None  4100  5700  None  None  None  None  None  None  None
STA PRES            28.45 28.41 28.42 28.42 28.44 28.42 28.46 28.47 28.47 28.43


Date          Thu 08/20/26Fri 08/21/26Sat 08/22/26Sun 08/23/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       67      92      66      85      64      85      62      86
TEMP          70 70 91 81 70 67 83 75 67 66 83 76 67 65 84 76
DEWPT         65 66 70 69 69 67 71 69 67 66 70 68 66 65 67 64
RH            84 87 50 67 97100 67 82100100 65 76 97100 57 66
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW SC B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 SC SC SC
POP 12HR            5      50      40      70      70      50      30      20
RAIN SHWRS             SC SC SC SC NM NM SC IS SC SC       IS
TSTMS                  SC SC       IS IS       SC          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