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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
214 PM EDT Tue Aug 18 2026

VAZ024-190800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
214 PM EDT Tue Aug 18 2026

Date           08/18/26      Wed 08/19/26            Thu 08/20/26            Fri
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                 64          91          67          90          65
TEMP          82 73 69 67 65 67 81 89 90 80 74 71 69 70 84 89 86 77 72 68 66 68
DEWPT         70 68 67 66 63 64 66 64 63 64 64 64 63 65 68 68 69 69 69 68 66 67
MIN/MAX RH                   97          40          85          51         100
RH            67 84 93 97 93 90 60 44 41 58 71 79 81 84 59 50 57 76 90100100 97
WIND DIR      NW  N NW  N  N  N SW  W  W  W  N  N  N  N SW  W  W NW  N  N  N  N
WIND SPD       3  1  1  0  0  0  1  2  2  1  0  0  0  0  1  3  3  1  1  0  0  1
CLOUDS        SC SC FW FW CL FW FW CL FW FW FW FW SC SC B1 B2 B2 B2 B2 B1 B1 B1
CLOUDS(%)     35 42 20 18  3  8  6  5  8  7  6 10 41 36 51 70 70 76 76 65 63 62
VSBY           9  9  8  6  6  8 10 10 10 10  7  6  6 10 10  6  6  6  6  7  7   
POP 12HR                     10           0          10          60          60
RAIN SHWRS    IS                                     IS IS NM NM NM NM SC SC SC
TSTMS         IS                                           SC SC SC            
Obvis                  PF PF                                                   
MIX HGT        3 <1 <1 <1 <1 <1  4  5  5 <1 <1 <1 <1 <1  3  5  3 <1            
T WIND DIR    NE  W NE  N NW NW  W  W  W  W  W NW  N NW  W SW SW SW            
T WIND SPD     1  1  4  6  3  2  5  8  8  2  2  2  2  1  9 14 17  8            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI            5  1  2  3  2  2 26 53 48  1  1  1  1  1 32 85 61  4            
MAX LVORI      3  6  8  8  8  6  2  1  1  3  3  4  5  5  1  1  1  4            
STABILITY      A  F  G  G  G  A  A  A  A  G  G  G  F  A  B  B  B  F            
CEILING        None  None  None  None  None  None  None  6900  6800  5800      
STA PRES      28.42 28.46 28.47 28.48 28.46 28.46 28.46 28.50 28.39            


Date           08/21Sat 08/22/26Sun 08/23/26Mon 08/24/26Tue 08/25/26
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       84      64      85      62      86      59      86      60      87
TEMP          83 76 68 66 83 76 67 65 84 75 62 62 84 75 63 63 85 77
DEWPT         70 68 67 66 69 67 65 65 64 60 60 60 61 61 60 60 64 64
RH            65 76 97100 63 74 93100 51 60 93 93 46 62 90 90 50 64
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B1 B1 B1 SC SC FW FW FW CL FW FW SC SC SC
POP 12HR           80      70      50      30      10       5       5       5      20
RAIN SHWRS    SC  O NM SC IS SC SC                               IS
TSTMS         IS SC IS       SC 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