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
801 PM EDT Fri Aug 7 2026

VAZ012-080800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
801 PM EDT Fri Aug 7 2026

Date           08/07/26      Sat 08/08/26            Sun 08/09/26            Mon
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                 63          84          64          85          64
TEMP                67 66 64 66 76 81 83 76 68 67 65 66 76 82 84 77 68 66 64 66
DEWPT               66 65 64 66 69 68 68 67 66 65 65 66 70 68 68 67 66 65 64 66
MIN/MAX RH                  100          61         100          58         100
RH                  97 97100100 79 65 61 74 93 93100100 82 63 59 71 93 97100100
WIND DIR            SW  W  W  W  W  W SW SW  W  W  W  W  W  W  W  W  W  W  W  W
WIND SPD             1  1  2  2  2  3  2  2  2  2  2  2  2  2  2  1  1  1  2  2
CLOUDS              B1 SC SC SC SC B1 B1 SC SC SC B1 SC B1 B1 SC SC SC FW SC SC
CLOUDS(%)           52 46 46 42 32 65 51 45 31 27 66 50 64 58 50 31 32 18 27 35
VSBY                 9  7  7  8 10 10 10 10 10  7  4  7  7  7  7 10 10 10 10   
POP 12HR                     10          50          10          30           5
RAIN SHWRS                         SC SC                   SC SC               
TSTMS                              SC SC                   SC SC               
Obvis                  PF                                                      
MIX HGT             <1 <1 <1 <1  3  4  4 <1 <1 <1 <1 <1  3  5  4 <1            
T WIND DIR          SW SW  W  W  W  W  W  W  W  W  W  W NW  W  W  W            
T WIND SPD           4  2  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 VP   
ADI                  2  1  2  6 39 71 60  5  3  2  2  7 28 35 32  2            
MAX LVORI            6  8 10  9  3  1  1  3  6  6  9  8  3  1  1  3            
STABILITY            F  F  F  A  A  B  B  F  G  G  F  A  B  B  A  G            
CEILING               200  None  None  None  None  None  1300  None  None      
STA PRES            27.42 27.42 27.42 27.37 27.38 27.38 27.41 27.36            


Date           08/10Tue 08/11/26Wed 08/12/26Thu 08/13/26Fri 08/14/26
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       87      65      86      65      81      65      81      62      80
TEMP          84 78 68 66 82 77 68 65 78 73 67 66 78 73 66 65 76 72
DEWPT         67 67 65 66 68 68 66 65 70 68 66 66 69 67 64 65 67 66
RH            57 69 90100 63 74 93100 76 84 97100 74 81 93100 74 81
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC FW SC B1 B1 SC B2 B2 B1 B2 B2 B1 B1 B2 B2 B1
POP 12HR           10      10      40      30      60      50      50      30      50
RAIN SHWRS                IS SC SC IS SC NM SC SC SC SC SC IS SC SC
TSTMS                     IS SC IS    IS 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