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

NCZ005-132000-
RAWS 310540
36.38N  79.70W Elev. 858 ft
431 AM EDT Thu Aug 13 2026

Date             Thu 08/13/26            Fri 08/14/26            Sat 08/15/26
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                 93          72          92          72          90
TEMP          71 73 85 91 91 84 77 75 73 74 84 90 90 83 77 75 73 74 83 89 88 81
DEWPT         67 69 72 72 72 73 72 71 70 71 73 73 73 74 73 72 72 72 73 73 72 72
MAX/MIN RH                   51          92          55          96          58
RH            87 87 65 54 54 70 85 87 90 90 70 58 58 74 87 90 97 93 72 59 59 74
WIND DIR       W  W  W  W  W  W  W NW  N  N  N NW NW NW NW  N  N  N NE  E  E SE
WIND SPD       2  2  3  5  5  2  2  1  2  2  3  4  4  2  1  2  2  3  4  4  4  2
CLOUDS        FW SC SC SC SC SC SC SC SC SC B1 B1 SC B1 B1 B1 SC SC SC B1 B1 B1
CLOUDS(%)     23 41 36 33 47 35 44 47 46 35 65 61 47 57 54 64 48 46 49 55 55 54
VSBY           9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     20          10          20          30          30
RAIN SHWRS                IS                         SC SC             SC SC IS
TSTMS                     IS                         SC IS             SC SC IS
MIX HGT       <1 <1  3  6  5 <1 <1 <1 <1 <1  3  5  4 <1 <1 <1 <1  1  3  5  5 <1
T WIND DIR     W SW NW  W SW SW SW  W SW SW  W  W SW SW  W NW NE NE NE NE  E SE
T WIND SPD     2  1 10  8  5  4  3  2  2  2  5 11 16  9  6  4  6  9  9  6  4  8
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            1  1 43 58 35  2  2  1  1  2 20 48 84  4  3  2  3 13 35 29 19  4
MAX LVORI      7  6  1  1  1  3  5  6  7  6  3  1  1  3  6  6  8  5  3  2  2  4
STABILITY      G  A  A  A  A  G  F  F  F  A  B  C  A  F  F  F  F  A  A  C  C  F
CEILING              None  None  None  None 14200  None 12900  None  None  None
STA PRES            29.23 29.18 29.23 29.26 29.30 29.23 29.26 29.32 29.41 29.40


Date          Sun 08/16/26Mon 08/17/26Tue 08/18/26Wed 08/19/26
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       72      93      74      96      72      91      70      90
TEMP          74 73 91 87 77 76 94 87 75 74 89 83 73 72 87 83
DEWPT         71 72 73 71 72 72 70 70 71 71 69 69 70 70 69 68
RH            90 97 56 59 85 87 46 57 87 90 52 63 90 93 55 61
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 SC SC SC SC FW B1 B1 B1 SC SC B1 SC SC SC
POP 12HR           20      20      10      30      30      20      30      20
RAIN SHWRS    IS       IS          SC SC       IS SC       IS
TSTMS         IS       IS          SC IS       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