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
1101 PM EDT Fri Aug 7 2026

VAZ046-080800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
1101 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                 71          90          71          92          71
TEMP                   74 72 73 84 89 88 81 76 74 72 73 86 91 90 82 76 73 71 74
DEWPT                  71 70 71 73 72 73 73 71 71 70 71 73 72 71 72 71 70 68 69
MIN/MAX RH                   96          56          95          52          91
RH                     90 93 93 70 57 61 77 85 90 93 93 65 54 54 72 85 90 90 84
WIND DIR               SW SW SW SW SW SW SW SW SW SW SW  W SW SW SW SW SW  W  W
WIND SPD                5  6  6  8  9 10  5  5  5  5  4  5  6  6  3  3  3  3  3
CLOUDS                 SC SC SC SC SC SC SC SC FW SC FW SC SC SC SC FW FW SC FW
CLOUDS(%)              37 31 35 27 43 39 38 39 13 30 17 29 35 49 34 24 21 31 21
VSBY                   10  9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                     20          20          10          20           5
RAIN SHWRS                            IS                   IS IS               
TSTMS                                 IS                   IS IS               
MIX HGT                <1 <1 <1  4  6  4 <1 <1 <1 <1 <1  4  7  6 <1            
T WIND DIR             SW SW SW  W  W  W SW SW  W SW SW  W SW SW SW            
T WIND SPD              3  3  3 14 14 14 12  2  3  3  3  6  5  8  3            
DISPERSION             PR PR             PR PR PR PR             VP VP VP VP   
ADI                     2  2  4 69101 72  6  1  2  2  3 32 43 52  2            
MAX LVORI               7  7  6  3  1  1  4  5  7  7  6  3  1  1  3            
STABILITY               F  F  B  B  B  B  F  F  F  F  A  A  B  B  G            
CEILING                    None  None  None  None  None  None  None  None      
STA PRES                  29.42 29.41 29.32 29.34 29.35 29.37 29.32            


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       94      72      93      71      90      71      89      69      86
TEMP          92 86 75 74 92 84 74 73 88 83 73 72 86 81 72 70 85 78
DEWPT         69 69 69 69 70 71 70 70 72 72 70 70 72 71 69 68 69 69
RH            47 57 82 84 49 65 87 90 59 70 90 93 63 72 90 93 59 74
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC FW FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR            0      20      20      20      30      30      20      20      30
RAIN SHWRS          IS    IS IS IS IS    SC SC       IS IS       SC
TSTMS               IS       IS IS       IS IS       IS 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