EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Tue Aug 11 2026

VAZ046-120800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
431 PM EDT Tue Aug 11 2026

Date           08/11/26      Wed 08/12/26            Thu 08/13/26            Fri
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                 70          91          70          92          72
TEMP          84 79 74 74 72 73 83 88 90 81 75 73 71 72 85 91 90 81 76 74 72 74
DEWPT         66 65 66 68 67 68 68 68 69 69 71 70 70 71 73 73 74 73 72 71 71 72
MIN/MAX RH                   90          50          98          56          95
RH            55 62 76 82 84 84 61 52 50 67 87 90 97 97 67 56 60 77 87 90 97 93
WIND DIR       W SW SW  W  W  W NW  W NW NW  W  W  W  W  W  W  W SW SW  W  W  W
WIND SPD      10  8  4  6  6  4  4  4  5  3  3  3  4  3  4  6  6  3  3  3  4  4
CLOUDS        OV B2 OV B1 B2 SC SC SC SC SC SC SC FW SC SC B1 B1 B1 SC B1 B1 B1
CLOUDS(%)    100 81 90 60 72 36 48 48 46 44 36 35 22 30 37 63 63 51 46 55 63 52
VSBY           9  9  8  9  7  8 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                     40          20          20          50          20
RAIN SHWRS    SC SC SC IS IS       IS IS    IS             SC SC IS IS         
TSTMS                                                         SC IS            
MIX HGT        4 <1 <1 <1 <1 <1  3  5  4 <1 <1 <1 <1 <1  4  6  6 <1            
T WIND DIR    NW NW  W NW NE NW NW  N NW  W SW  W  W  W  W  W  N  S            
T WIND SPD    21 10  3  4  9  8 11  9  5  4  3  3  2  2  2  8  1  6            
DISPERSION       PR VP PR PR             VP VP VP VP             VP VP VP VP   
ADI           86  9  2  3  6  8 47 60 30  2  2  2  1  2 12 35  5  3            
MAX LVORI      1  3  4  5  4  4  1  1  2  3  7  7  8  8  3  1  3  4            
STABILITY      C  D  E  E  E  A  A  A  A  F  G  G  F  A  A  C  C  F            
CEILING             12700  None  None  None  None  None  None  5300  None      
STA PRES            29.23 29.18 29.21 29.16 29.18 29.20 29.24 29.20            


Date           08/14Sat 08/15/26Sun 08/16/26Mon 08/17/26Tue 08/18/26
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      67      85      67      89      72      93      69      88
TEMP          89 81 72 68 83 78 70 69 87 82 74 73 90 84 73 71 86 80
DEWPT         74 73 69 66 68 67 66 67 73 72 71 71 74 72 70 68 69 68
RH            61 77 90 93 61 69 87 93 63 72 90 93 60 67 90 90 57 67
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B2 B1 B1 SC SC SC SC B1 B1 FW SC SC SC SC SC SC SC
POP 12HR           60      30      20      10      30      10      20      20      10
RAIN SHWRS       NM SC IS    IS          SC          IS IS         
TSTMS            SC                      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