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
307 PM EDT Sat Aug 8 2026

NCZ003-090800-
RAWS 310302
36.35N  80.48W Elev. 1076 ft
307 PM EDT Sat Aug 8 2026

Date           08/08/26      Sun 08/09/26            Mon 08/10/26            Tue
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                 69          88          70          88          69
TEMP          84 78 73 71 70 70 81 86 85 79 74 72 71 71 81 86 88 82 74 71 70 71
DEWPT         72 71 70 69 68 69 72 71 71 72 71 70 69 69 72 71 71 72 71 70 68 69
MIN/MAX RH                   97          58          96          57          96
RH            67 79 90 93 93 97 74 61 63 79 90 93 93 93 74 61 57 72 90 97 93 93
WIND DIR       W SW SW  W  W  W NW SW SW SW  W  W  W  W  W  W  W SW  W  W  W  W
WIND SPD       4  3  3  3  3  2  2  3  3  2  2  3  3  3  3  4  4  3  3  4  4  4
CLOUDS        B1 B1 SC SC SC SC FW SC B1 SC B1 SC SC SC SC B1 SC SC FW FW FW FW
CLOUDS(%)     59 64 43 35 37 26 13 38 53 49 63 45 48 35 41 55 47 42 25 16 16 15
VSBY          10 10 10 10 10 10 10 10  7 10 10 10 10 10 10 10 10 10            
POP 12HR                     10          40          20          10           5
RAIN SHWRS    SC                   IS SC                                       
TSTMS         SC                   IS SC                                       
MIX HGT        3 <1 <1 <1 <1 <1  3  5  2 <1 <1 <1 <1 <1  2  6  3 <1            
T WIND DIR    SW SW  W  W  W  W  W  W SW SW SW SW SW SW NW  W  W SW            
T WIND SPD     6  8  2  2  2  2  4  4  5 11  5  5  4  2  5  4  8  6            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           31  4  1  1  1  2 18 27 17  5  3  3  2  2 16 32 34  3            
MAX LVORI      3  5  7  8  8  8  3  2  2  4  6  8  8  8  3  1  1  4            
STABILITY      A  F  F  G  G  A  A  A  B  F  F  F  F  A  A  A  A  F            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            29.04 29.04 29.06 29.01 29.01 29.03 29.03 28.99            


Date           08/11Wed 08/12/26Thu 08/13/26Fri 08/14/26Sat 08/15/26
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       89      70      89      70      88      71      86      69      84
TEMP          88 83 72 72 86 82 73 72 85 81 73 71 83 80 72 69 81 78
DEWPT         71 72 69 69 71 72 70 70 72 71 70 69 72 71 69 68 70 70
RH            57 70 90 90 61 72 90 93 65 72 90 93 70 74 90 97 69 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC FW SC SC SC SC B1 SC B1 B1 SC B1 SC B1 B1 B1
POP 12HR           20      10      20      10      20      10      50      20      30
RAIN SHWRS       IS          IS          IS       IS SC IS IS IS SC
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