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

VAZ024-180800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
801 PM EDT Mon Aug 17 2026

Date           08/17/26      Tue 08/18/26            Wed 08/19/26            Thu
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                 68          92          63          92          67
TEMP                73 71 70 71 83 89 88 78 72 68 65 67 82 89 91 83 74 70 68 70
DEWPT               71 70 68 70 71 69 69 68 67 66 62 64 66 64 63 65 65 65 64 66
MIN/MAX RH                   97          49          95          40          89
RH                  93 97 93 97 67 52 54 71 84 93 90 90 58 44 40 55 74 84 87 87
WIND DIR            SW  W  W NW  N NW NW NW NW  N  N  N  W  W  W  W  N  N  N  N
WIND SPD             1  1  1  1  2  3  3  2  1  0  0  0  1  2  2  1  0  0  0  0
CLOUDS              B2 B1 SC SC SC SC SC FW FW SC SC FW FW FW FW FW FW FW SC SC
CLOUDS(%)           70 66 38 28 32 39 41 23 22 26 36 22 12  8 15 13 20 18 32 29
VSBY                 9  5  3  5 10 10 10 10  7  6  3 10 10 10 10 10 10 10 10 10
POP 12HR                     30          10          10           0          10
RAIN SHWRS                                                                     
TSTMS                                                                          
Obvis                F  F  F  F                                                
MIX HGT             <1 <1 <1 <1  3  4  4 <1 <1 <1 <1 <1  3  5  6 <1            
T WIND DIR          NW NW  N  N NE  S SW  W  W NW NW NW NW NW NW  W            
T WIND SPD           3  2  3  3  5  5  4  2  2  3  4  4  6  8  9  3            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  2  1  2  3 22 33 21  1  1  2  2  4 27 49 72  2            
MAX LVORI            7  8  8  9  3  1  2  3  5  7  6  6  2  1  1  3            
STABILITY            F  F  F  A  A  A  A  G  G  G  G  A  A  A  A  G            
CEILING              5500  None  None  None  None  None  None  None  None      
STA PRES            28.44 28.44 28.46 28.42 28.44 28.45 28.47 28.45            


Date           08/20Fri 08/21/26Sat 08/22/26Sun 08/23/26Mon 08/24/26
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      84      64      84      63      85      60      84
TEMP          90 80 70 67 82 74 67 66 82 75 67 66 84 75 63 63 82 74
DEWPT         69 70 69 67 71 69 67 66 69 68 66 65 65 62 61 60 61 59
RH            50 72 97100 69 84100100 65 79 97 97 53 64 93 90 49 59
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B2 B2 B1 B1 B2 B2 B2 B1 B1 B1 SC SC SC FW FW FW SC
POP 12HR           60      60      60      60      40      30      20       5       5
RAIN SHWRS       NM NM SC SC NM NM IS IS SC SC       IS            
TSTMS            SC SC    IS SC 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