National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Fri Aug 14 2026

VAZ018-150800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
301 PM EDT Fri Aug 14 2026

Date           08/14/26      Sat 08/15/26            Sun 08/16/26            Mon
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          83          69          89          71
TEMP          82 79 74 72 71 71 78 81 82 73 72 71 71 71 82 88 86 77 75 74 73 72
DEWPT         73 70 69 70 68 69 72 72 72 71 71 70 69 70 73 73 73 73 70 69 68 69
MIN/MAX RH                   98          71          97          61          91
RH            74 74 84 93 90 93 82 74 72 93 97 97 93 97 74 61 65 87 84 84 84 90
WIND DIR       W  W NW NW NW NW NE  W  N NE SW SW SW SW  W  W  W  W  W  W  W  W
WIND SPD       5  4  2  2  1  1  2  3  3  1  1  1  1  2  3  4  5  3  5  6  6  6
WIND GUST                                                        13 18 21 23 23
CLOUDS        B1 B2 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 SC SC FW FW FW FW SC
CLOUDS(%)     69 70 58 62 58 60 80 74 66 68 60 66 59 69 55 45 45 19 19 15 25 33
VSBY          10 10  8  5  3  4 10 10 10 10 10  4  0  0 10 10 10 10 10 10 10   
POP 12HR                     40          60          40          30          10
RAIN SHWRS    SC IS SC    IS IS SC NM SC    SC       SC SC IS IS               
TSTMS         SC IS SC          IS SC SC    IS             IS IS               
Obvis                  PF PF PF                                                
MIX HGT        3 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1 <1 <1  3  5  5 <1            
T WIND DIR     W NW NW NW  N NE NE  W  W  E SE  S SW SW  W  W  W  W            
T WIND SPD    21 18  5  2  1  2  1  4  4  3  2  2  1  4 23 23 25 13            
DISPERSION       VP VP VP VP             VP VP VP VP             VP PR PR PR   
ADI           72 12  3  1  1  2  3 15 15  2  1  1  1  5 74143155  6            
MAX LVORI      3  4  5  7  7  6  5  3  3  7  8  8  9  7  3  1  1  5            
STABILITY      C  E  F  F  F  B  B  B  B  F  F  F  F  B  B  A  A  G            
CEILING              7700  3000   600  2700  2800  1000  None  None  None      
STA PRES            27.90 27.92 27.95 27.92 27.91 27.87 27.81 27.73            


Date           08/17Tue 08/18/26Wed 08/19/26Thu 08/20/26Fri 08/21/26
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       87      68      85      65      87      68      87      66      82
TEMP          86 77 71 69 83 75 67 67 85 77 70 70 85 76 69 66 80 72
DEWPT         72 71 68 67 69 66 63 64 68 67 65 66 69 68 65 64 67 65
RH            63 82 90 93 63 74 87 90 57 71 84 87 59 76 87 93 65 79
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B1 B1 SC SC SC FW FW SC SC SC SC SC B1 B1 B1 B1 B1
POP 12HR           40      20      10       5       5      10      30      30      40
RAIN SHWRS       SC IS                               SC SC IS IS SC
TSTMS            SC                                  SC          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