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 AM EDT Fri Aug 7 2026

NCZ006-072000-
RAWS 310801
36.37N  79.29W Elev. 580 ft
801 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                 89          71          90          72          91
TEMP                83 88 88 83 77 76 74 74 83 88 88 82 77 74 72 74 84 90 89 83
DEWPT               74 74 73 74 72 72 72 73 74 74 73 74 72 72 71 72 74 73 72 74
MAX/MIN RH                   61          97          61          99          57
RH                  74 63 61 74 85 87 93 97 74 63 61 77 85 93 97 93 72 58 57 74
WIND DIR            SW SW  S  S SW SW SW SW SW SW SW SW SW SW SW SW  W SW SW SW
WIND SPD             5  6  6  3  1  2  3  4  5  6  6  2  1  1  2  2  3  3  4  2
CLOUDS              SC SC SC SC SC FW SC SC SC B1 B1 SC SC FW SC FW SC SC SC B1
CLOUDS(%)           49 49 41 49 36 23 37 34 44 51 55 42 42 20 26 21 34 36 40 52
VSBY                10 10 10  7 10 10 10 10 10  7  7 10 10 10 10 10 10 10 10 10
POP 12HR                     10          20          30          10          10
RAIN SHWRS                   IS                IS SC                           
TSTMS                        IS                IS SC                           
MIX HGT              3  5  4 <1 <1 <1 <1 <1  4  6  4 <1 <1 <1 <1 <1  3  6  7 <1
T WIND DIR          SW SW SW SW SW SW SW SW  W SW SW SW SW  W SW SW  W SW SW SW
T WIND SPD          10 14 14 14  5  6  6 13 13 12 14  9 11  6  4  9 10  6 12  5
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                 37 82 73  7  3  3  3 17 62 56 77  4  5  3  2 10 39 50102  3
MAX LVORI            3  1  1  3  5  6  6  5  3  1  1  4  5  6  8  6  3  1  1  3
STABILITY            A  B  B  F  G  G  G  A  A  C  B  F  F  G  G  A  A  A  A  F
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            29.57 29.49 29.49 29.49  29.5 29.43 29.44 29.44 29.46 29.41


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       72      93      73      95      72      94      71      92
TEMP          74 74 91 87 76 74 93 87 76 74 91 85 75 73 90 84
DEWPT         71 72 72 72 71 72 71 72 71 71 72 73 71 71 72 73
RH            90 93 54 61 85 93 49 61 85 90 54 67 87 93 56 70
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC SC SC FW FW FW SC FW FW SC B1 SC SC B1
POP 12HR            5       5       5       5      10      30      30      30
RAIN SHWRS                                     SC SC       SC
TSTMS                                          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