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

VAZ012-212000-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
401 AM EDT Thu May 21 2026

Date             Thu 05/21/26            Fri 05/22/26            Sat 05/23/26
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                 75          54          64          53          69
TEMP          61 62 72 72 68 66 62 59 57 55 59 62 64 61 58 56 56 56 62 67 69 66
DEWPT         58 61 63 64 63 62 60 58 56 55 59 59 60 58 57 56 54 56 60 62 63 63
MAX/MIN RH                   66         100          86         100          82
RH            90 97 73 76 84 87 93 96 96100100 90 87 90 96100 93100 93 84 81 90
WIND DIR       N  N SE SE  N  E  E  E  E  E  E SE SE  E SE SE SE SE SE  S  S  S
WIND SPD       0  0  1  1  1  1  2  2  2  3  3  3  3  4  4  3  3  3  3  3  3  2
CLOUDS        B2 B2 B1 OV OV OV OV OV OV OV B2 OV OV OV B2 OV OV OV OV OV OV B2
CLOUDS(%)     82 81 67 95 94 93 95 93 90 89 83 92 91 93 86 96 96 96 96 92 92 78
VSBY           5  7 10  6  4  3  3  4  5  5  5  3  3  3 10 10 10 10 10 10 10 10
POP 12HR                    100          80          90          90          90
RAIN SHWRS    IS    SC  O  O  O SC SC SC SC SC  O  O  O  O  O  O  O  O  O  O SC
TSTMS               SC SC SC IS                                                
Obvis                         F  F  F  F  F PF                                 
MIX HGT       <1 <1  2  2  1 <1 <1 <1 <1 <1  1  1  1  1 <1 <1 <1 <1  1  2  2  1
T WIND DIR     W  W  W NE  N  N  E  E  E  E  E  E  E  E SE SE SE SE SE  S  S  S
T WIND SPD     4  1  2  2  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
ADI            2  1  6  5  5  4  6  5  4  7 13 14 17  6  8  4  3  6 11 31 34  5
MAX LVORI      6  8  3  4  5  5  6  6  8  8  5  5  4  5  8  9  8  8  5  4  3  5
STABILITY      F  B  B  B  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   200   100   200   900
STA PRES            27.32 27.29 27.33 27.33 27.37 27.35 27.37 27.37 27.40 27.35


Date          Sun 05/24/26Mon 05/25/26Tue 05/26/26Wed 05/27/26
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       56      81      58      76      59      77      58      76
TEMP          60 61 75 71 63 61 75 71 63 62 75 71 63 61 75 71
DEWPT         60 61 64 63 59 61 64 64 61 62 65 64 61 61 63 63
RH           100100 69 76 87100 69 79 93100 71 79 93100 66 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 OV B2 B2 B2 OV B2 B1 B2 OV B1 B1 B2 OV
POP 12HR           30      80      40      90      40      90      40      90
RAIN SHWRS    SC    SC  O SC IS NM  O SC IS  O  O SC IS NM  O
TSTMS                  SC SC    IS SC IS    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