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

VAZ046-210800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
231 AM EDT Mon Apr 20 2026

Date           04/19/26      Mon 04/20/26            Tue 04/21/26            Wed
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                 41          62          32          67          51
TEMP                      43 45 56 60 61 52 43 36 32 38 54 63 67 62 57 54 52 54
DEWPT                     24 29 29 24 21 20 21 21 21 22 24 26 29 31 32 33 35 39
MIN/MAX RH                   54          21          64          23          57
RH                        47 53 35 25 21 28 41 54 63 52 31 24 24 31 38 45 52 57
WIND DIR                  SW  W  W NW NW NW  N NE  N NE  S SW SW  S  S SW SW SW
WIND SPD                   5  5 10 11 11  5  4  2  2  2  3  5  8  6  8  8  9  9
WIND GUST                       20 21                               18 19 19   
CLOUDS                    FW SC SC FW FW CL CL CL CL CL CL FW FW FW SC B1 B1 SC
CLOUDS(%)                  7 30 28 18 15  3  4  3  5  4  3  6  9 24 39 54 56 47
VSBY                      10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                      0           0           0           0           5
RAIN SHWRS                                                                   IS
MIX HGT                   <1  2  7  9  9 <1 <1 <1 <1  1  4  5  5 <1            
T WIND DIR                SW  W NW NW NW NW  N  N  N  E  W SW SW  S            
T WIND SPD                 5  5 16 17 18 13  4  3  2  4  3  6  8  6            
DISPERSION                PR             PR VP VP VP             PR PR PR PR   
ADI                        3 12 76 89 94  6  2  2  1  6 17 42 43  3            
MAX LVORI                  2  2  1  1  1  2  2  2  3  2  2  1  1  2            
STABILITY                  F  B  C  C  C  F  F  G  G  A  A  A  B  F            
CEILING                    None  None  None  None  None  None  None  None      
STA PRES                  29.45 29.51 29.52 29.60 29.65 29.65 29.50            


Date           04/22Thu 04/23/26Fri 04/24/26Sat 04/25/26Sun 04/26/26
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      51      83      55      86      59      83      55      71
TEMP          78 69 56 56 81 76 60 59 84 76 63 62 81 73 61 57 69 67
DEWPT         47 49 50 50 50 50 50 50 49 51 51 53 54 55 53 52 52 50
RH            33 49 80 80 34 40 69 72 30 42 65 72 39 53 75 83 55 54
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B1 FW FW FW FW FW FW FW SC SC SC B1 B1 B1 B1 B2 B1
POP 12HR           40      10       5       0      10      20      50      50      50
RAIN SHWRS    IS SC                            IS IS SC SC SC SC SC
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