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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 PM EDT Tue Jul 21 2026

WVZ043-220800-
RAWS 465401
37.53N  81.00W Elev. 2725 ft
1001 PM EDT Tue Jul 21 2026

Date           07/21/26      Wed 07/22/26            Thu 07/23/26            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                 66          77          59          74          58
TEMP                72 69 68 68 71 75 75 70 65 62 59 60 67 72 73 69 63 61 59 60
DEWPT               70 69 68 68 69 68 67 64 62 61 59 59 61 62 62 61 60 60 58 59
MIN/MAX RH                  100          75          98          69          98
RH                  93100100100 93 79 76 81 90 97100 96 81 71 68 76 90 97 96 96
WIND DIR            SW  W  W  W  W  W NW  N  N  N  N  N  E  E  E  E SE SE  E  E
WIND SPD             9  9  5  4  6  8  6  5  4  3  2  2  3  3  4  4  3  3  3  4
WIND GUST           21 21                                                      
CLOUDS              B2 B2 B1 B2 B1 B1 B1 SC B1 B2 B2 SC B1 B1 B1 SC SC B1 B1 B2
CLOUDS(%)           76 78 67 75 69 58 61 41 66 83 75 48 59 62 52 37 36 55 65 78
VSBY                 7  5  6  5 10 10 10 10 10  7 10 10 10  7  7 10 10 10 10   
POP 12HR                     90          40          10          30          10
RAIN SHWRS          NM NM SC IS SC SC SC                   SC SC             IS
TSTMS               NM IS    IS IS IS SC                                       
MIX HGT             <1 <1 <1  1  3  4  4  1 <1 <1 <1  1  3  4  4  1            
T WIND DIR           W  W  W  W  W  W  W NW  N  N  N  N SE  S SE SE            
T WIND SPD           8 14 10 11  9 10  8  3 11  8  8  5  2  3  2  8            
DISPERSION          PR PR PR             PR VP VP VP             VP VP VP VP   
ADI                  7 13  7 20 28 39 30  2  5  4  4  7  9 18  8  4            
MAX LVORI            6  5  8  5  4  3  3  5  6  8  9  6  4  3  3  4            
STABILITY            D  D  E  C  C  C  C  E  F  F  F  A  B  B  C  F            
CEILING                     700  None  None  1700  2200  None  None  None      
STA PRES                  27.50 27.58 27.57 27.61 27.67 27.73 27.73            


Date           07/24Sat 07/25/26Sun 07/26/26Mon 07/27/26Tue 07/28/26
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       73      61      72      63      79      66      81      66      80
TEMP          71 70 64 62 70 69 64 65 77 75 67 68 78 76 68 67 78 75
DEWPT         63 62 63 62 68 66 64 65 68 68 67 67 69 68 66 66 66 65
RH            76 76 97100 93 90100100 74 79100 97 74 76 93 97 67 71
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR           20      50      60      30      30      30      50      50      40
RAIN SHWRS    IS IS SC SC NM NM SC SC SC SC SC IS IS SC SC SC SC SC
TSTMS            IS IS       SC IS       SC IS    IS SC IS       SC

$$


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