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
601 AM EDT Fri Aug 7 2026

VAZ012-072000-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
601 AM EDT Fri Aug 7 2026

Date             Fri 08/07/26            Sat 08/08/26            Sun 08/09/26
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                 83          62          83          64          84
TEMP             65 76 81 80 73 68 65 64 66 76 80 81 73 68 66 65 66 75 81 83 76
DEWPT            65 69 68 69 68 66 64 64 66 69 68 69 68 66 65 65 66 70 68 68 67
MAX/MIN RH                   62         100          64         100          61
RH              100 79 65 69 84 93 97100100 79 67 67 84 93 97100100 84 65 61 74
WIND DIR          W  W SW  S SW SW  W  W  W  W SW SW SW  W  W  W  W  W  W  W  W
WIND SPD          1  2  2  2  1  1  1  2  2  2  2  2  1  2  2  2  2  2  2  1  1
CLOUDS           B1 B1 B1 B1 SC SC FW FW FW SC B1 B1 SC SC SC SC B1 SC B1 B1 SC
CLOUDS(%)        51 54 69 59 37 36 14 20 23 33 61 63 44 36 35 43 55 47 55 55 29
VSBY              1 10  7  7 10 10  1  1 10  7  6  6 10 10 10 10  7  7  7  7 10
POP 12HR                     40          10          50          10          30
RAIN SHWRS             SC SC                IS SC SC             IS IS SC SC   
TSTMS                  SC SC                IS SC SC                   SC SC   
Obvis            PF                PF PF                                       
MIX HGT          <1  2  4  3 <1 <1 <1 <1 <1  3  5  3 <1 <1 <1 <1 <1  3  5  4 <1
T WIND DIR        W  W SW SW  S SW SW  W SW  W  W SW SW SW  W  W  W  W SW SW  S
T WIND SPD        8 10  8  6 10  4  5  6  6 14 13 16  4  3  4  4  3  3  4 11  2
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI               8 31 35 22  5  2  3  3  7 64 74 66  2  2  2  2  4 13 27 58  1
MAX LVORI         8  3  3  3  5  6  8  9  8  3  1  1  5  7  8  9  9  4  2  1  3
STABILITY         B  B  B  B  G  G  G  G  A  A  B  B  F  G  G  F  B  A  B  B  G
CEILING               800  3700  None  None  None  2300  None  None  None  None
STA PRES            27.47 27.42 27.41 27.40 27.41 27.39 27.38 27.37 27.39 27.36


Date          Mon 08/10/26Tue 08/11/26Wed 08/12/26Thu 08/13/26
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       64      86      65      87      65      84      64      81
TEMP          66 66 84 78 67 67 83 77 68 66 80 74 67 66 78 73
DEWPT         65 66 67 67 65 67 69 68 66 66 69 68 66 66 69 68
RH            97100 57 69 93100 63 74 93100 69 82 97100 74 84
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC SC SC FW SC SC SC SC B1 B2 B1 B1 B1 B2
POP 12HR            5      10       5      20      20      60      40      60
RAIN SHWRS                         IS IS    IS NM SC IS SC NM
TSTMS                              IS 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