National Weather Service United States Department of Commerce

Showers and Storms in the East; Dangerously Hot and Dry in the West

A frontal boundary will bring scattered showers and storms to portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Intermountain West and expand into the Central U.S. by early next week. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >

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

NCZ001-060800-
RAWS 310142
36.40N  81.46W Elev. 4608 ft
901 PM EDT Wed Aug 5 2026

Date           08/05/26      Thu 08/06/26            Fri 08/07/26            Sat
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                 62          72          62          72          61
TEMP                64 64 63 63 68 70 68 64 64 64 63 63 68 71 68 64 63 63 62 62
DEWPT               63 63 62 63 63 65 66 64 63 63 62 62 64 65 66 64 63 62 61 62
MIN/MAX RH                   99          83         100          82         100
RH                  97 97 97100 84 84 93100 97 97 97 97 87 81 93100100 97 97100
WIND DIR             S  S SW SW  S SW  S SW  S  S SW  W SW  S SW  S SW SW  W  W
WIND SPD             5  5  5  4  4  5  4  4  4  5  5  4  3  4  4  3  5  5  5  6
CLOUDS              SC SC SC SC SC B2 OV B2 B2 SC SC B1 B1 OV OV B1 B1 SC SC SC
CLOUDS(%)           45 38 44 46 28 87 89 74 82 44 41 57 57 91 91 64 52 32 30 34
VSBY                 9  6  3  2 10  9 10 10 10  5  1                           
POP 12HR                     20          80          30          90          20
RAIN SHWRS                      IS  O  O SC          SC SC  O  O IS IS       IS
TSTMS                           IS NM NM IS             IS SC SC IS            
Obvis                  PF PF PF                                                
MIX HGT             <1 <1 <1 <1  3  2  2 <1 <1 <1 <1 <1  3  3  2 <1            
T WIND DIR           S  S  S SW SW  S  S  S  S  S SW  W  W SW SW  S            
T WIND SPD           4  5  8  5  6 10 16 13  9  9  8  2 10  6  8  8            
DISPERSION          PR PR PR             VP VP PR PR             VP PR PR PR   
ADI                  3  3  5  6 25 29 33  9  6  6  5  2 36 22 19  4            
MAX LVORI            8  8  7  9  4  4  4  8  6  6  7 10  4  3  5  9            
STABILITY            E  F  E  A  A  C  C  E  E  E  E  C  B  C  C  F            
CEILING                    None  None   700   700  None  1100   700  None      
STA PRES                  26.87 26.91 26.89 26.91 26.92 26.95 26.91            


Date           08/08Sun 08/09/26Mon 08/10/26Tue 08/11/26Wed 08/12/26
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       73      62      75      62      76      63      76      64      74
TEMP          72 67 64 62 72 68 63 63 74 69 65 64 73 69 65 64 71 67
DEWPT         65 64 62 62 64 64 61 61 63 64 62 62 64 64 63 63 65 64
RH            79 90 93100 76 87 93 93 69 84 90 93 73 84 93 97 81 90
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC OV B1 SC SC B1 SC FW SC SC SC FW SC B1 SC SC B1 B1
POP 12HR           80      20      50       5      20       5      30      20      50
RAIN SHWRS    IS  O IS    IS SC          IS       IS SC IS    IS SC
TSTMS         IS SC IS    IS SC          IS       IS SC IS    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