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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Aug 13 2026

VAZ024-140800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
801 PM EDT Thu Aug 13 2026

Date           08/13/26      Fri 08/14/26            Sat 08/15/26            Sun
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          91          70          90          70
TEMP                75 72 70 71 82 88 87 80 75 73 71 72 83 89 85 78 74 72 71 72
DEWPT               70 69 68 69 70 71 72 73 73 72 71 72 73 73 74 74 73 72 71 72
MIN/MAX RH                   97          56          99          60         100
RH                  84 90 93 93 67 57 61 79 94 97100100 72 59 70 88 97100100100
WIND DIR             W NW  N  N NW  W  W  E  N  N  N  N NE NE  E  E  N  N  N SW
WIND SPD             2  1  0  0  1  3  3  1  0  0  0  0  1  3  2  1  0  0  0  1
CLOUDS              B2 B1 B1 B2 B1 B2 B2 B1 B1 B2 B2 B2 B1 B2 B2 B1 B2 B1 B1 SC
CLOUDS(%)           78 58 57 86 68 78 82 62 69 79 79 81 69 74 74 63 74 69 68 50
VSBY                 9  7  5  7  8 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                     10          40          30          60          30
RAIN SHWRS                   SC SC IS SC SC       SC       NM NM SC SC         
TSTMS                              IS SC SC                SC SC IS            
Obvis                     PF                                                   
MIX HGT             <1 <1 <1 <1  3  4  4 <1 <1 <1 <1 <1  3  4  3 <1            
T WIND DIR           N NW NW  N NW  W  W  S NE NE NE  E NE  N  E  E            
T WIND SPD           2  2  3  2  3  6  9  2  3  8  4  5  2  2  1  2            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  1  1  2  2 11 34 40  1  2  4  2  6  7 11  4  1            
MAX LVORI            5  7  7  6  3  1  1  4  7  8  8  8  3  2  3  6            
STABILITY            F  G  F  B  B  B  B  F  F  F  F  B  B  B  B  F            
CEILING              4700 12000  1900  5800  3400  2000  4000  3500  3500      
STA PRES            28.51 28.53 28.61 28.55 28.59 28.64 28.69 28.66            


Date           08/16Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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       95      72      94      69      91      68      92      68      94
TEMP          93 85 75 74 91 84 72 71 88 80 71 70 89 82 71 70 91 83
DEWPT         74 73 71 70 70 70 70 69 69 69 68 68 69 68 68 68 68 67
RH            54 67 87 87 50 63 93 93 54 69 90 93 52 63 90 93 47 59
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC FW FW FW B1 SC FW SC SC SC SC SC SC FW SC SC SC
POP 12HR           20      10      40      20      20      30      20      10      20
RAIN SHWRS       IS          SC IS       IS SC       IS          IS
TSTMS            IS          SC IS       IS IS       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