National Weather Service United States Department of Commerce

Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Wed Aug 5 2026

VAZ024-052000-
RAWS 441631
37.63N  79.51W Elev. 865 ft
401 AM EDT Wed Aug 5 2026

Date             Wed 08/05/26            Thu 08/06/26            Fri 08/07/26
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                 86          68          91          68          90
TEMP          71 73 79 85 85 79 72 71 70 71 83 90 88 80 74 71 69 71 84 90 87 79
DEWPT         70 70 71 72 71 71 70 70 69 70 70 70 71 71 72 71 69 71 73 72 74 73
MAX/MIN RH                   62         100          53         100          57
RH            97 90 77 65 63 77 93 97 97 97 65 52 57 74 93100100100 70 56 65 82
WIND DIR       N  N SE  S  S  S  S  S  S SW SW  S  S  S  N  N  N  N SW SW SW SW
WIND SPD       0  0  2  4  5  2  1  1  1  1  3  5  5  2  0  0  0  0  2  4  4  1
CLOUDS        B1 B1 B2 B1 B1 SC SC SC SC FW SC B1 B2 SC SC SC SC SC SC B2 B2 B1
CLOUDS(%)     66 64 72 69 59 50 49 26 26 25 27 69 72 46 44 43 44 47 34 76 76 55
VSBY           2  3 10 10 10  9  8  5  7  8 10 10                              
POP 12HR                     40          20          60          20          60
RAIN SHWRS    SC IS IS SC SC IS IS             SC NM IS IS             NM NM IS
TSTMS               IS SC SC IS                SC SC IS                SC SC IS
Obvis         PF                      PF PF                                    
MIX HGT       <1 <1  2  3  3 <1 <1 <1 <1 <1  3  5  4 <1 <1 <1 <1 <1  3  5  2 <1
T WIND DIR    SE  S  S  S  S  S  S  S SW SW SW SW  S SW SW  S SW  W  W  W  W  N
T WIND SPD     2  3  5 10 14 10  9  8  5  5  6 10 16 10  4  4  3  5 11  8  2  0
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            1  4 16 34 50  5  4  4  3  7 26 43 57  5  2  2  2  6 38 43  7  0
MAX LVORI     10  7  3  3  1  4  9  9  9  8  3  1  1  4  8  9 10  9  3  1  3  6
STABILITY      F  B  B  C  C  F  F  G  G  A  A  C  C  F  F  F  F  A  A  B  C  F
CEILING               400  3100  None  None  None  3500  None  None  None  6800
STA PRES            28.61 28.58 28.64 28.66 28.68 28.66 28.68 28.69 28.72 28.68


Date          Sat 08/08/26Sun 08/09/26Mon 08/10/26Tue 08/11/26
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       67      91      67      92      67      94      69      93
TEMP          70 70 90 81 70 70 90 84 72 71 92 84 73 72 91 84
DEWPT         70 70 72 73 70 70 71 71 69 69 70 71 70 70 71 71
RH           100100 56 77100100 54 65 90 93 49 65 90 93 52 65
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC B2 SC SC SC SC SC FW SC SC FW SC SC SC
POP 12HR           20      60      20      10       0      10       5      20
RAIN SHWRS    IS       NM IS                               IS
TSTMS         IS       SC 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