National Weather Service United States Department of Commerce

Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Sat Aug 8 2026

VAZ012-090800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
831 PM EDT Sat Aug 8 2026

Date           08/08/26      Sun 08/09/26            Mon 08/10/26            Tue
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                 64          86          64          86          65
TEMP                68 67 65 66 77 83 83 75 68 67 66 66 77 83 85 78 70 68 65 67
DEWPT               66 65 65 66 69 68 68 67 66 65 64 66 69 68 68 67 67 66 65 67
MIN/MAX RH                  100          56         100          56         100
RH                  93 93100100 76 61 61 76 93 93 93100 76 61 57 69 90 93100100
WIND DIR             W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W
WIND SPD             2  2  2  2  1  1  1  1  1  2  2  2  2  2  2  2  2  3  3  3
CLOUDS              B2 SC B2 B1 B1 B1 SC B1 B1 SC B1 SC B2 B1 SC SC SC SC SC SC
CLOUDS(%)           71 49 73 65 63 58 48 51 58 47 53 43 70 61 40 32 38 30 34 42
VSBY                10  9  6  6 10 10 10 10 10  7  8  8 10  7  7 10 10 10 10 10
POP 12HR                     10          30          10          20          10
RAIN SHWRS                         IS IS                   IS IS               
TSTMS                              IS IS                   IS IS               
MIX HGT             <1 <1 <1 <1  3  5  3 <1 <1 <1 <1 <1  3  3  4 <1            
T WIND DIR           W  W  W  W NW  W  W  W  W SW  W  W  W  W  W  W            
T WIND SPD           5  5  5  4  9  8 12  6  3  3  4  2  6  9 12  9            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  3  3  3  5 33 47 50  3  2  2  2  2 22 39 72  4            
MAX LVORI            6  6  9  9  3  1  1  4  7  7  8  9  3  1  1  3            
STABILITY            F  F  F  B  B  B  A  F  F  F  F  A  B  B  A  G            
CEILING             16100   200   200  None  None  None  1500  None  None      
STA PRES            27.39 27.40 27.43 27.40 27.41 27.39 27.42 27.39            


Date           08/11Wed 08/12/26Thu 08/13/26Fri 08/14/26Sat 08/15/26
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       86      65      84      65      83      65      81      63      81
TEMP          83 78 69 66 80 75 68 67 79 74 67 66 77 73 65 65 78 73
DEWPT         69 68 66 66 69 68 67 67 70 68 66 66 69 67 64 65 68 66
RH            63 71 90100 69 79 97100 74 82 97100 76 81 97100 71 79
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B1 B1 SC B1 B1 B1 B1 B2 B1 B1 B1 B2 B2 B1 B1 B1 B1
POP 12HR           50      30      30      50      40      30      60      30      50
RAIN SHWRS       SC SC SC IS SC SC IS IS SC SC SC SC NM SC IS SC SC
TSTMS            SC IS    IS SC IS    IS SC IS    IS 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