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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Thu May 21 2026

VAZ012-220800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
231 PM EDT Thu May 21 2026

Date           05/21/26      Fri 05/22/26            Sat 05/23/26            Sun
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                 54          59          54          67          59
TEMP          68 66 63 58 56 56 58 59 59 57 55 54 54 55 58 65 67 65 62 60 60 61
DEWPT         63 62 60 57 55 55 57 58 59 57 55 54 54 55 58 61 62 61 60 59 59 61
MIN/MAX RH                  100          96         100          83         100
RH            84 87 90 96 96 96 96 96100100100100100100100 87 84 87 93 96 96100
WIND DIR      NE NE  E  E  E SE SE SE SE SE SE SE SE SE SE  S  S SE  S  S  S SW
WIND SPD       1  1  2  2  2  3  3  3  3  3  3  3  3  3  3  3  2  2  1  1  1  1
WIND GUST                                   13                                 
CLOUDS        OV OV OV B2 OV OV B2 OV B2 OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1
CLOUDS(%)     89 98 93 87 88 91 86 95 83 96 94 96 96 93 93 90 90 81 82 77 75 69
VSBY           5  4  5  5  5  4  4  5  4  4 10 10 10 10 10 10 10 10            
POP 12HR                    100          90          90          90          50
RAIN SHWRS     O  O SC NM NM  O NM SC NM SC  O  O  O  O  O  O  O SC SC       SC
TSTMS         SC IS                IS IS IS                IS SC               
MIX HGT        1 <1 <1 <1 <1 <1  1  1  1  1 <1 <1 <1 <1  1  2  2  1            
T WIND DIR     N  N  E  E  E  E  E  E  E  E SE SE SE SE SE  S  S  S            
T WIND SPD     3  9 12 10  8  6  8  8  9  9 11  8  5  5  6 11 13 11            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI            5  4  6  5  4  7 13 14 17  6  8  4  3  6 11 31 34  5            
MAX LVORI      5  5  6  6  8  8  5  5  4  5  8  9  8  8  5  4  3  5            
STABILITY      B  F  F  F  F  B  B  B  B  E  E  F  F  B  B  B  B  F            
CEILING         200   200   200   200   200   200   100   200   900   100      
STA PRES      27.29 27.33 27.33 27.37 27.35 27.37 27.37 27.40 27.35            


Date           05/24Mon 05/25/26Tue 05/26/26Wed 05/27/26Thu 05/28/26
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       80      57      72      58      76      58      74      57      74
TEMP          78 72 62 60 71 68 62 61 74 71 63 61 72 70 62 60 73 70
DEWPT         64 65 61 60 65 64 61 61 65 65 60 61 64 64 60 59 61 61
RH            62 79 97100 81 87 97100 74 81 90100 76 81 93 96 66 73
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 OV B1 B1 B2 OV B2 B2 OV OV B1 B2 B2 OV B2 B1 B1 B2
POP 12HR           90      40      90      60     100      50      90      40      70
RAIN SHWRS    SC  O SC IS  O  O NM SC  O  O SC SC  O  O SC SC SC NM
TSTMS         IS SC IS    IS SC IS    IS SC IS       SC IS    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