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

VAZ024-212000-
RAWS 441631
37.63N  79.51W Elev. 865 ft
731 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                 78          54          62          51          64
TEMP             67 76 77 71 66 62 60 58 56 60 62 62 60 57 55 54 53 58 62 64 63
DEWPT            64 67 66 65 61 59 58 57 56 59 59 59 57 56 55 53 53 58 60 62 61
MAX/MIN RH                   67         100          89         100          87
RH               90 74 69 81 84 90 93 96100 96 90 90 90 96100 96100100 93 93 93
WIND DIR         NE  E  N  N NE NE NE NE NE  E  E  E  E  E  E  E  E  E  E  E  E
WIND SPD          1  2  4  4  3  2  2  2  2  3  3  3  3  3  2  2  1  2  2  2  1
WIND GUST                    14 12                   13                        
CLOUDS           B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2
CLOUDS(%)        71 79 93 94 97 97 96 94 94 88 89 90 94 91 90 90 98 98 88 87 85
VSBY              9  9  7  4  3  3  3  3  4  4  3  3  2 10 10 10 10 10 10 10 10
POP 12HR                    100         100          90          80         100
RAIN SHWRS          SC NM  O  O NM  O  O  O SC  O  O  O  O  O  O  O  O SC SC NM
TSTMS                  SC SC                                                   
Obvis                         F  F  F  F  F PF                                 
MIX HGT           1  2  2  1  1  1  1  1  1  1  2  1  1  1  1  1  1  1  1  1  1
T WIND DIR        E  E  E NE NE NE NE NE NE NE NE  E NE NE NE NE NE NE  E  E  E
T WIND SPD        8  9 11 17 12 12 12  9  9 13 13 13 11 11  6  5  6  4  4  5  4
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI              14 25 23 26  6  6  6  4 14 26 27 26  5  5  3  3 11  7  8 10  2
MAX LVORI         5  3  3  3  5  6  6  9  5  4  4  4  6  9  9  8  7  8  6  6  6
STABILITY         B  B  C  C  F  F  F  F  B  B  B  B  F  F  F  F  B  B  B  B  F
CEILING               400   700   700   400   500   400   400   400   400   700
STA PRES            28.58 28.58 28.62 28.62 28.69 28.69 28.71 28.71 28.73 28.69


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      63      83      64      82      63      83
TEMP          61 61 79 75 68 65 81 77 69 66 81 77 69 65 82 77
DEWPT         60 60 68 67 63 65 69 69 66 65 69 69 66 64 67 67
RH            97 97 69 76 84100 67 76 90 97 67 76 90 97 61 71
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B1 B2 B2 B2 B1 B2 B2 OV B2 B1 B2 B2
POP 12HR           60      50      50      80      40      90      50      60
RAIN SHWRS    NM IS    SC SC IS SC  O SC SC  O  O SC IS SC NM
TSTMS                  SC IS    IS SC IS       SC          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