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

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

Date           04/21/26      Wed 04/22/26            Thu 04/23/26            Fri
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                 45          76          46          78          49
TEMP          68 59 50 48 48 51 69 75 74 64 55 51 48 50 72 77 76 66 57 52 50 53
DEWPT         35 37 37 37 37 38 38 38 37 37 38 39 40 43 45 44 42 43 43 43 43 45
MIN/MAX RH                   67          26          81          29          82
RH            29 44 61 65 65 61 32 26 26 37 53 63 74 77 38 31 30 43 59 71 77 74
WIND DIR       W SW SW  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W
WIND SPD       5  5  4  5  6  8 11 10  9  5  3  3  3  3  4  4  4  3  2  2  3  3
WIND GUST                       21 20                                          
CLOUDS        SC SC FW FW FW SC B1 B1 B1 SC FW FW FW FW FW FW SC FW FW FW FW FW
CLOUDS(%)     30 34 22 19 18 38 55 58 52 38 21  7  9  7  7 23 30 15 11 13 25 20
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0          10           0          10           5
MIX HGT        6 <1 <1 <1 <1 <1  5  7  7 <1 <1 <1 <1 <1  5  7  7 <1            
T WIND DIR     W SW SW  W  W  W  W  W  W  W  W  W  W  W NW NW  W  W            
T WIND SPD    13  8  6  9 10 11 35 27 25  8  5  5  5  5 17 11 10  3            
DISPERSION       PR VP PR PR             PR VP VP VP             VP VP VP VP   
ADI          105  4  3  4  5 12145132122  4  3  3  3  6117 96 82  2            
MAX LVORI      1  2  3  3  3  2  1  1  1  2  2  3  3  3  1  1  1  2            
STABILITY      A  F  F  F  F  B  C  C  C  F  G  G  G  A  A  A  A  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            27.37 27.34 27.34 27.28 27.30 27.29 27.31 27.23            


Date           04/24Sat 04/25/26Sun 04/26/26Mon 04/27/26Tue 04/28/26
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      52      73      48      73      45      72      50      72
TEMP          77 68 56 55 72 64 52 50 71 63 49 47 71 64 54 51 68 63
DEWPT         41 46 47 49 54 52 49 47 44 44 44 44 45 45 46 48 51 49
RH            28 45 72 80 53 65 89 89 38 50 83 89 39 50 74 89 54 60
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC B1 B2 OV B2 B1 B1 B1 B1 SC B1 B1 B1 B2 B2 B1
POP 12HR           10      30      90      60      30      30      40      60      70
RAIN SHWRS          IS SC NM  O NM SC SC SC SC IS IS SC SC NM NM SC
TSTMS                        SC                         IS       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