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
339 AM EDT Sat Aug 8 2026

VAZ012-082000-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
339 AM EDT Sat Aug 8 2026

Date             Sat 08/08/26            Sun 08/09/26            Mon 08/10/26
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                 85          64          86          65          87
TEMP          65 66 76 81 81 74 68 67 66 66 77 82 85 77 69 67 65 67 78 83 86 78
DEWPT         64 66 68 68 69 67 66 65 65 66 69 68 67 67 66 65 64 66 69 68 67 67
MAX/MIN RH                   61         100          56         100          53
RH            97100 76 65 67 79 93 93 97100 76 63 55 71 90 93 97 97 74 61 53 69
WIND DIR       W  W  W  W SW SW  W  W  W  W NW  W  W  W SW  W  W  W  W  W  W  W
WIND SPD       2  2  3  2  2  2  2  2  2  2  2  2  1  1  1  1  1  1  2  2  2  2
CLOUDS        SC SC SC B1 B1 SC B1 SC B1 B2 B2 B1 B1 B1 SC SC B1 B1 SC SC SC FW
CLOUDS(%)     40 41 48 65 55 48 61 30 56 70 71 67 53 56 47 39 54 56 46 43 35 19
VSBY           7  7 10 10 10 10  9  7  4  3 10  7  7 10 10 10 10 10 10 10 10 10
POP 12HR                     40          10          40           5          20
RAIN SHWRS             SC SC                IS IS IS                   IS IS   
TSTMS                  SC SC                IS IS IS                   IS IS   
MIX HGT       <1 <1  3  4  4 <1 <1 <1 <1 <1  3  5  4 <1                        
T WIND DIR     W  W  W  W  W  W  W  W  W  W NW  W  W  W                        
T WIND SPD     3  5 10 13 13 10  5  4  4  6  8  5  5  4                        
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            2  6 39 71 60  5  3  2  2  7 28 35 32  2                        
MAX LVORI     10  9  3  1  1  3  6  6  9  8  3  1  1  3                        
STABILITY      F  A  A  B  B  F  G  G  F  A  B  B  A  G                        
CEILING              None  None  None  None  1300  None  None                  
STA PRES            27.42 27.37 27.38 27.38 27.41 27.36                        


Date          Tue 08/11/26Wed 08/12/26Thu 08/13/26Fri 08/14/26
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       65      87      66      83      65      83      64      82
TEMP          68 67 83 77 68 67 79 75 68 67 79 75 67 66 78 74
DEWPT         66 67 69 68 66 67 70 68 67 67 70 68 66 66 69 68
RH            93100 63 74 93100 74 79 97100 74 79 97100 74 82
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR            5      30      40      50      30      50      30      50
RAIN SHWRS             SC SC    SC SC SC IS IS SC SC IS SC SC
TSTMS                  SC SC    SC SC IS    IS SC IS       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