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

VAZ024-132000-
RAWS 441631
37.63N  79.51W Elev. 865 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                 94          70          91          70          90
TEMP          70 72 85 92 91 83 76 73 71 72 83 89 87 80 75 72 70 72 83 88 85 79
DEWPT         65 67 71 71 71 71 70 70 68 70 72 73 74 74 72 72 70 70 72 72 72 71
MAX/MIN RH                   48          94          58          99          58
RH            84 84 63 51 52 67 82 90 90 93 70 59 65 82 90100100 93 70 59 65 77
WIND DIR       W  W  W  W NW  W NW  N  N  N NW  W SW  S  N  N  N  N  E SE SE  N
WIND SPD       1  2  3  4  4  2  1  1  0  0  1  3  2  1  0  0  0  1  2  3  2  0
CLOUDS        SC SC SC SC SC FW B1 SC SC B1 B2 B2 B2 B1 B1 B1 B1 B1 SC B1 B1 B1
CLOUDS(%)     30 39 38 36 42 22 54 43 49 54 84 82 78 63 63 57 61 65 50 67 60 56
VSBY           9 10 10 10 10 10 10  6  8  9  9 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     10          20          50          40          30
RAIN SHWRS                               SC IS SC SC SC SC IS IS       SC SC IS
TSTMS                                          IS IS IS                IS SC IS
MIX HGT       <1 <1  3  5  5 <1 <1 <1 <1 <1  3  4  2 <1 <1 <1 <1 <1  3  4  4 <1
T WIND DIR    NW NW NW  W  W  W  W  N NW  N NW  W SE SE NE  N  N NE NE NE  E SE
T WIND SPD     3  3 12 12 16  5  2  2  1  1  4  3 11  1  4  2  3  5  6  4  3  9
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            2  3 45 82 92  3  1  1  1  1 16 16 35  1  2  1  2  6 26 23 17  4
MAX LVORI      6  6  1  1  1  3  5  7  8  7  3  2  3  6  6  8 10  6  3  2  3  4
STABILITY      G  A  A  A  A  G  F  F  F  B  B  B  B  F  F  F  F  B  A  B  B  F
CEILING              None  None  None  None  3400  5600  4000  3100  2500  2900
STA PRES            28.47 28.45 28.48 28.51 28.55 28.49 28.53 28.59 28.67 28.66


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       70      94      72      95      69      90      67      91
TEMP          72 72 93 85 74 74 93 84 72 71 88 80 71 69 89 81
DEWPT         70 70 73 73 72 72 72 71 70 69 70 69 68 67 69 69
RH            93 93 52 67 93 93 51 65 93 93 55 69 90 93 52 67
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 SC SC FW FW FW SC B1 B1 B1 SC B1 SC SC SC
POP 12HR           20      20      10      20      30      20      30      20
RAIN SHWRS    IS       IS          IS SC IS    IS SC       IS
TSTMS         IS       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