National Weather Service United States Department of Commerce

Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 PM EDT Mon Aug 3 2026

VAZ018-040800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
201 PM EDT Mon Aug 3 2026

Date           08/03/26      Tue 08/04/26            Wed 08/05/26            Thu
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                 66          80          67          83          68
TEMP          81 73 70 68 67 67 74 78 78 72 70 69 68 69 77 81 80 73 71 70 68 70
DEWPT         70 68 66 65 65 65 68 69 70 69 67 66 66 67 71 72 72 71 69 68 67 68
MIN/MAX RH                   95          74          97          72          98
RH            69 84 87 90 93 93 82 74 76 90 90 90 93 93 82 74 77 93 93 93 97 93
WIND DIR      NW  N  N NE NE NE  E  E  E SE  E  E  E  E SE  S  S  S  S  S  S SW
WIND SPD       3  2  2  2  3  4  3  4  4  3  1  1  1  1  2  4  4  2  1  1  1  2
WIND GUST                 13 14                                                
CLOUDS        B1 SC B1 B1 B1 B1 B2 B1 B1 B2 B2 B2 B2 B2 B1 B2 B2 B1 B1 B1 SC SC
CLOUDS(%)     52 42 54 61 68 68 78 64 63 72 74 77 71 73 58 82 82 55 54 53 45 43
VSBY          10 10 10  6  6  9 10 10 10  8  7  7  7  7                        
POP 12HR                     20          60          60          70          10
RAIN SHWRS    IS IS IS IS IS       SC SC NM NM IS IS IS IS NM NM             IS
TSTMS         IS IS                SC SC IS IS          IS SC SC             IS
MIX HGT        4 <1 <1 <1 <1 <1  2  3  3  1 <1 <1 <1 <1  2  3  3 <1            
T WIND DIR     N  N  N  E NE  E  E  E SE SE  E  E NE  E SE SE SE SE            
T WIND SPD     8  9  9 13 10  9  9  5  8  6  2  2  2  3  6  6 10 12            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           35  4  4  6  5  7 27 18 26  3  1  1  1  4 19 23 33  6            
MAX LVORI      3  5  5  5  6  6  4  3  3  6  7  7  8  8  3  3  3  7            
STABILITY      B  F  F  F  F  C  B  C  C  F  F  F  F  B  B  C  C  F            
CEILING        None  3100  2800  3200  3200  3200  1900   900  2400  None      
STA PRES      27.67 27.75 27.81 27.88 27.87 27.90 27.90 27.94 27.90            


Date           08/06Fri 08/07/26Sat 08/08/26Sun 08/09/26Mon 08/10/26
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       85      68      86      68      85      68      86      68      87
TEMP          84 76 70 70 84 76 70 70 83 75 70 69 83 76 70 70 85 77
DEWPT         71 71 67 68 71 71 67 68 71 71 67 68 71 71 67 68 71 70
RH            65 85 90 93 65 85 90 93 67 87 90 97 67 85 90 93 63 79
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B2 B1 SC SC B2 B1 SC SC B2 B1 SC SC B1 B1 SC SC SC
POP 12HR           70      20      60      30      60      30      40      10      20
RAIN SHWRS    IS NM IS       NM SC    IS NM SC    IS SC          IS
TSTMS         IS SC IS       SC IS       SC IS       SC          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