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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon Apr 20 2026

VAZ012-210800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
801 PM EDT Mon Apr 20 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                 25          71          45          75          45
TEMP                38 34 30 33 52 69 71 60 52 48 48 50 69 74 74 64 55 50 47 50
DEWPT               18 18 17 19 23 29 34 38 39 39 39 39 40 39 38 39 40 41 40 43
MIN/MAX RH                   70          22          71          26          84
RH                  44 51 58 56 32 22 26 44 61 71 71 66 35 28 27 40 57 71 76 77
WIND DIR             N  N SW  S SW  W  W SW SW  W  W  W  W  W  W  W  W  W  W  W
WIND SPD             2  1  1  2  3  5  6  5  4  5  6  8 10 11  9  5  3  2  2  3
CLOUDS              CL CL FW FW CL FW FW SC SC FW SC SC SC SC FW FW FW FW FW FW
CLOUDS(%)            4  4  6  7  4 19 25 47 34 19 34 39 39 38 24 24 15  9 10  6
VSBY                10 10 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 <1 <1  3  5  5 <1 <1 <1 <1 <1  5  7  8 <1            
T WIND DIR          NW SW SW  S  W  W  W SW SW  W  W  W  W  W NW  W            
T WIND SPD           2  1  2  3  8 11 16  9  9 10 11 13 44 37 24  6            
DISPERSION          VP VP VP             PR VP PR PR             PR VP VP VP   
ADI                  1  1  1  3 28 76 99  6  4  5  5 14200181195  3            
MAX LVORI            2  2  3  3  2  1  1  2  3  3  3  2  1  1  1  2            
STABILITY            G  G  G  A  A  A  B  E  F  F  F  B  B  C  B  F            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            27.45 27.47 27.48 27.38 27.35 27.31 27.31 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       79      49      79      53      75      50      74      51      69
TEMP          76 68 53 52 78 69 57 55 72 66 54 53 73 65 55 52 68 63
DEWPT         43 44 44 44 43 45 46 48 51 52 51 50 49 49 49 49 51 51
RH            31 42 71 74 29 42 67 77 48 61 90 89 43 56 80 89 54 65
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW CL FW SC SC B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2
POP 12HR            5       5      10      30      70      50      50      40      60
RAIN SHWRS                         SC SC NM SC SC SC SC SC SC SC NM
TSTMS                                    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