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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Tue Apr 21 2026

VAZ012-220800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
231 AM EDT Tue Apr 21 2026

Date           04/20/26      Tue 04/21/26            Wed 04/22/26            Thu
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                 28          70          46          74          46
TEMP                      30 33 58 67 69 60 52 50 48 51 69 72 74 67 55 50 47 51
DEWPT                     18 17 21 26 32 36 39 39 38 39 38 37 37 39 41 42 42 43
MIN/MAX RH                   68          19          70          26          86
RH                        60 51 23 21 25 41 61 66 68 63 32 28 26 36 59 74 83 74
WIND DIR                   S  S SW  W  W  W SW  W  W  W  W  W  W  W  W  W  W  W
WIND SPD                   1  1  2  2  3  3  3  3  4  5  6  6  6  3  2  2  2  2
WIND GUST                                            16 17 18                  
CLOUDS                    CL CL CL FW FW B1 SC FW SC B1 SC SC SC FW FW FW FW FW
CLOUDS(%)                  4  4  3  7 19 51 30 21 39 66 47 47 33 24 15  6  6 20
VSBY                      10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                      0           0           0          10           5
MIX HGT                   <1 <1  3  6  6 <1 <1 <1 <1 <1  5  7  7 <1 <1 <1 <1 <1
T WIND DIR                SW  S  W  W  W SW SW  W  W  W  W  W  W  W  W  W NW NW
T WIND SPD                 2  3  5  9 12  8  6 10 10 11 36 33 27  6  5  5  8 12
DISPERSION                VP             VP VP VP VP             VP VP VP VP   
ADI                        1  3 20 65 92  4  3  5  5 11200200200  3  3  3  4 12
MAX LVORI                  3  2  2  1  1  2  3  3  3  2  1  1  1  2  3  3  5  4
STABILITY                  G  A  A  A  A  F  G  G  F  A  B  B  B  G  G  G  G  A
CEILING                    None  None  None  None  None  None  None  None  None
STA PRES                  27.48 27.49 27.40 27.37 27.34 27.33 27.29 27.30 27.29


Date           04/23Fri 04/24/26Sat 04/25/26Sun 04/26/26Mon 04/27/26
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       78      48      78      52      73      50      71      45      70
TEMP          75 69 52 53 77 69 55 55 69 65 54 52 69 62 49 48 66 62
DEWPT         44 43 44 44 42 45 46 48 52 52 50 49 46 44 44 43 46 46
RH            33 39 74 71 29 42 72 77 55 63 86 89 44 52 83 83 48 56
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC FW FW SC B1 B1 B1 B2 OV B2 B1 B1 B1 SC SC B1 B1
POP 12HR           20       5      10      30      80      60      40      30      40
RAIN SHWRS       IS                SC NM  O NM SC SC SC SC IS SC SC
TSTMS                                    SC                      IS

$$


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