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
631 PM EDT Fri Aug 7 2026

NCZ006-080800-
RAWS 310801
36.37N  79.29W Elev. 580 ft
631 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                 72          90          72          92          72
TEMP             83 77 75 74 74 84 89 89 82 77 75 73 74 86 92 90 83 77 75 73 74
DEWPT            73 72 72 71 72 75 73 72 73 71 71 71 72 74 72 72 73 72 71 70 72
MIN/MAX RH                   96          58          96          52          96
RH               72 85 90 90 93 74 59 57 74 82 87 93 93 68 52 56 72 85 87 90 93
WIND DIR         SW SW SW SW SW SW SW SW SW SW SW SW SW  W SW SW SW SW SW SW  W
WIND SPD          3  2  2  3  4  5  6  8  3  2  2  2  2  3  4  5  2  1  1  1  1
CLOUDS           SC SC SC SC SC B1 SC SC SC SC FW FW FW SC SC SC B1 SC SC SC FW
CLOUDS(%)        44 38 28 30 36 67 47 36 48 30 18 11 24 26 32 40 62 44 27 29 18
VSBY             10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                     10          20           5          10          10
MIX HGT          <1 <1 <1 <1  1  4  5  5 <1 <1 <1 <1 <1  3  6  5 <1            
T WIND DIR        W  S  W SW SW  W SW SW SW SW SW SW SW  W  W SW SW            
T WIND SPD        9  2  1  3  9 17 13 13 10  5  4  4  6  4  5  8  8            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               4  1  1  2 12 75 80 75  5  3  2  2  7 20 44 50  4            
MAX LVORI         3  5  7  7  5  3  1  1  3  5  6  6  6  3  1  1  3            
STABILITY         F  G  G  G  A  B  B  B  F  G  G  G  A  A  A  A  F            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            29.51 29.50 29.50 29.42 29.43 29.43 29.45 29.39            


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      72      93      72      92      70      88
TEMP          92 86 76 74 92 87 75 74 90 85 75 74 89 84 74 72 86 81
DEWPT         71 71 70 71 71 71 70 71 72 72 71 71 72 72 70 70 71 71
RH            51 61 82 90 51 59 84 90 56 65 87 90 57 67 87 93 61 72
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC FW FW SC SC SC SC B1 B1 B1 SC B1 B1 B1 B1 B1
POP 12HR            5       5      20      20      20      20      30      30      30
RAIN SHWRS                   IS IS       IS IS       SC SC IS    SC
TSTMS                        IS 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