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

VAZ024-220800-
RAWS 441631
37.63N  79.51W Elev. 865 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          53          64          59
TEMP          75 63 63 61 58 57 57 59 58 57 55 54 53 54 55 62 64 63 62 61 61 60
DEWPT         66 61 59 57 57 55 57 58 58 56 55 54 53 53 55 59 61 60 59 58 58 60
MIN/MAX RH                  100          95         100          89         100
RH            74 93 87 87 96 93100 96100 96100100100 96100 90 90 90 90 90 90100
WIND DIR       N NE  E  E NE  E  E  E  E  E  E  E  E  E  E  E  E  E  N  N  N  N
WIND SPD       4  4  3  2  2  2  3  4  3  3  3  2  2  2  2  2  2  1  0  0  0  0
WIND GUST        16                      14 13                                 
CLOUDS        OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV B2 OV OV OV B2 B2 B2
CLOUDS(%)     93100 95 95 95 98 93 92 91 95 96 98 98 98 98 86 88 90 90 81 84 79
VSBY           4  3  4  4  4  3  2  2  4  3 10 10 10 10 10 10 10 10            
POP 12HR                    100         100         100         100          90
RAIN SHWRS     O  O NM  O  O  O NM  O SC NM NM  O  O  O  O  O  O  O  O SC SC   
TSTMS         SC IS                IS IS                   IS SC IS            
MIX HGT        1  1  1  1  1  1  1  2  1  1  1  1  1  1  1  1  1  1            
T WIND DIR    NE NE NE NE NE NE NE NE  E NE NE NE NE NE NE  E  E  E            
T WIND SPD    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 VP VP VP   
ADI           26  6  6  6  4 14 26 27 26  5  5  3  3 11  7  8 10  2            
MAX LVORI      3  5  6  6  9  5  4  4  4  6  9  9  8  7  8  6  6  6            
STABILITY      C  F  F  F  F  B  B  B  B  F  F  F  F  B  B  B  B  F            
CEILING         700   700   400   500   400   400   400   400   700   400      
STA PRES      28.58 28.62 28.62 28.69 28.69 28.71 28.71 28.73 28.69            


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       81      62      76      63      77      62      82      61      80
TEMP          79 75 67 63 75 72 67 66 76 73 67 65 80 75 68 64 78 75
DEWPT         68 69 65 63 70 69 65 64 70 69 65 63 68 68 64 62 65 66
RH            69 82 93100 84 90 93 93 82 87 93 93 67 79 87 93 64 74
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B2 B2 B2 B2 OV B2 B1 B2 OV B2 B2 B2 B2 B1 B1 B1 B1
POP 12HR           60      60      80      60      90      50      70      40      50
RAIN SHWRS       NM NM SC SC  O NM SC NM  O SC SC SC NM SC SC SC SC
TSTMS            SC IS       SC IS       SC          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