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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Thu Aug 20 2026

VAZ018-210800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
831 PM EDT Thu Aug 20 2026

Date           08/20/26      Fri 08/21/26            Sat 08/22/26            Sun
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                 66          81          65          83          63
TEMP                70 69 67 67 74 80 75 69 68 68 67 67 75 82 80 71 68 66 64 65
DEWPT               66 66 65 66 69 71 71 68 66 66 65 66 69 68 66 63 62 61 61 61
MIN/MAX RH                   97          74          98          61          92
RH                  87 90 93 97 84 74 87 97 93 93 93 97 82 63 62 76 81 84 90 87
WIND DIR            NW  N  E NE  E SE SE SE  E  N  N  E  W  W  W  W  W  W  W  W
WIND SPD             2  1  1  1  2  3  3  1  1  0  0  1  2  3  4  2  3  4  5  8
WIND GUST                                                                 18 24
CLOUDS              FW B1 B1 B2 B2 B2 B1 B2 B2 B2 B1 B1 SC SC SC FW FW FW FW SC
CLOUDS(%)           24 54 52 70 81 76 67 82 85 74 64 61 48 32 27 13 19 20 21 27
VSBY                10  9  7  3  8 10 10  8  8  5  1  0  3 10 10 10  4  0  1 10
POP 12HR                     10          70          70          20           5
RAIN SHWRS                   IS IS SC SC NM NM SC    IS IS                     
TSTMS                           IS SC SC SC IS                                 
Obvis                         F                                                
MIX HGT             <1 <1 <1 <1  2  3  2 <1 <1 <1 <1 <1  2  5  4 <1            
T WIND DIR          NW  N  E  E  E  E  E SE  E NE SE  S  W NW  W  W            
T WIND SPD           3  3  6  8  4  6  5  5  4  5  5  9  8  8  4  8            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP PR   
ADI                  2  2  3  8  9 23 11  3  2  3  3 10 26 46 24  4            
MAX LVORI            6  7  6  6  5  3  5  9  6  6  6  6  3  1  2  4            
STABILITY            G  F  F  B  B  B  B  F  F  F  F  B  A  A  A  G            
CEILING              None 10900   500  2000  1500   700  None  None  None      
STA PRES            27.81 27.85 27.89 27.84 27.83 27.76 27.76 27.73            


Date           08/23Mon 08/24/26Tue 08/25/26Wed 08/26/26Thu 08/27/26
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       79      57      79      56      82      62      85      65      85
TEMP          79 70 60 59 77 68 59 58 80 72 64 64 83 74 68 68 83 74
DEWPT         61 56 55 55 56 53 53 53 59 59 58 59 66 65 64 64 68 66
RH            54 61 84 87 48 59 80 83 49 64 81 84 57 74 87 87 61 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW CL FW FW FW FW FW FW SC SC SC SC B1 B1 SC SC B1
POP 12HR            5       0       0       0      10      10      40      30      40
RAIN SHWRS                                        IS SC SC IS IS SC
TSTMS                                                SC          SC

$$


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