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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Mon Aug 17 2026

VAZ018-172000-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
431 AM EDT Mon Aug 17 2026

Date             Mon 08/17/26            Tue 08/18/26            Wed 08/19/26
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                 88          68          85          62          87
TEMP          72 72 82 87 82 74 72 71 70 70 78 83 81 72 68 65 63 65 80 86 84 75
DEWPT         68 69 70 69 68 71 70 69 68 68 70 69 67 64 62 61 60 61 65 65 64 65
MAX/MIN RH                   55          97          60          92          49
RH            87 90 67 55 63 90 93 93 93 93 76 63 63 76 81 87 90 87 60 50 51 71
WIND DIR       W NW NW NW  W  W  W NW NW NW NW NW NW NW NW NW  W  W  W  W  W NW
WIND SPD       6  6  6  5  5  4  3  3  4  4  4  5  6  4  3  2  2  2  2  3  4  2
WIND GUST     25 24 21 17 17 16 13    14 16          16                        
CLOUDS        B1 B1 FW SC B1 B2 B2 SC FW FW B1 SC FW FW FW FW FW FW CL CL FW FW
CLOUDS(%)     61 59 21 50 62 76 72 44 12 20 52 33 17 11  7  8  7  9  4  4 11 20
VSBY           8  6 10 10 10 10  7  4  3  4 10  6 10 10 10 10  3  0 10 10 10 10
POP 12HR                     50          40           5           0           0
RAIN SHWRS    IS       IS IS SC IS                                             
TSTMS                  IS IS IS                                                
MIX HGT       <1 <1  3  4  4 <1 <1 <1 <1 <1  3  5  4  1 <1 <1 <1 <1  3  5  6 <1
T WIND DIR     W  W NW NW  W  W NW NW NW NW  N NW NW NW NW NW NW NW SW  W NW  W
T WIND SPD    10 12 21 12 12  5  4  3  3  8 10  8  9 13  5  4  3  3  5  8 10  4
DISPERSION    PR             VP VP VP VP             VP VP VP VP             VP
ADI            7 15 70 62 44  4  2  2  2  9 31 46 49  6  3  2  2  3 24 48 71  2
MAX LVORI      5  5  3  1  3  6  6  7  7  6  3  1  1  4  5  6  7  6  2  1  1  3
STABILITY      E  C  B  A  C  E  F  F  F  A  C  A  B  F  G  G  G  A  A  A  A  G
CEILING              None  3100  4300  None  None  None  None  None  None  None
STA PRES            27.77 27.73 27.73 27.73 27.76 27.74 27.78 27.78 27.78 27.75


Date          Thu 08/20/26Fri 08/21/26Sat 08/22/26Sun 08/23/26
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       66      87      66      81      64      80      63      80
TEMP          69 69 86 75 69 67 78 71 68 66 77 71 66 65 78 70
DEWPT         63 64 70 68 66 66 71 68 65 65 70 66 63 63 67 63
RH            81 84 59 79 90 97 79 90 90 97 79 84 90 93 69 78
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 SC SC SC
POP 12HR            5      50      50      70      60      50      30      20
RAIN SHWRS             SC SC SC SC NM NM SC SC SC SC       IS
TSTMS                  SC SC       SC 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