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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EDT Sun Aug 16 2026

VAZ024-170800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
631 PM EDT Sun Aug 16 2026

Date           08/16/26      Mon 08/17/26            Tue 08/18/26            Wed
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          92          67          90          64
TEMP             80 76 73 72 73 85 90 89 81 75 72 69 70 84 89 88 78 72 67 64 67
DEWPT            73 72 71 69 71 72 71 71 70 70 69 67 68 69 67 66 64 64 63 61 63
MIN/MAX RH                  100          50          98          47          94
RH               79 87 93 90 93 65 54 56 69 84 90 93 93 61 48 48 62 76 87 90 87
WIND DIR         SW SW  W  W  W  W  W  W  W  W  W  N  N NW NW NW NW  N  N  N  N
WIND SPD          3  2  2  3  3  5  5  5  3  1  1  0  1  2  3  3  2  1  0  0  0
WIND GUST                 13          16                                       
CLOUDS           B1 B1 B1 B1 SC SC B1 B1 SC B2 SC SC SC SC SC SC FW FW FW FW FW
CLOUDS(%)        52 63 68 57 44 30 57 53 35 76 47 50 44 34 34 33 17 12 12 16 11
VSBY             10  8  7  6  8 10 10 10 10  6  7  4 10 10 10 10 10 10 10 10   
POP 12HR                     40          30          20          10           0
RAIN SHWRS       SC SC IS          IS IS    IS                                 
TSTMS            SC                IS IS                                       
Obvis                      F                                                   
MIX HGT          <1 <1 <1 <1 <1  4  5  4 <1 <1 <1 <1 <1  3  5  7 <1            
T WIND DIR        S NW  W  W  W NW NW NW NW NW  W NW  N NE  W  W NW            
T WIND SPD       10 13  6  5  9 13 12 13  8  4  2  2  2  3  5  8  3            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               5  6  3  3  9 63 81 64  4  2  1  1  2 15 37 64  2            
MAX LVORI         4  5  6  6  6  1  1  1  3  5  7  8  6  2  1  1  3            
STABILITY         F  F  F  F  A  A  A  A  G  F  F  F  A  A  A  A  G            
CEILING              3700  None  None  None  5300  3600  None  None  None      
STA PRES            28.47 28.45 28.47 28.43 28.47 28.46 28.48 28.44            


Date           08/19Thu 08/20/26Fri 08/21/26Sat 08/22/26Sun 08/23/26
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       93      67      91      65      81      63      84      62      86
TEMP          91 84 72 70 89 81 69 66 81 73 66 65 82 75 65 65 85 76
DEWPT         65 65 65 66 68 68 67 65 66 65 65 64 67 66 64 64 65 63
RH            42 53 79 87 50 65 93 97 60 76 97 97 61 74 97 97 51 64
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW SC SC B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 SC
POP 12HR            0       5      40      30      50      60      40      20      20
RAIN SHWRS                   SC SC SC IS SC NM SC IS SC IS       IS
TSTMS                        SC IS       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