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

VAZ018-210800-
RAWS 444002
37.56N  80.18W Elev. 2702 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                 40          57          34          71          52
TEMP                      42 42 50 55 56 46 40 35 34 37 55 67 71 63 56 54 53 56
DEWPT                     27 30 26 19 18 18 19 18 18 20 25 28 34 36 37 39 39 41
MIN/MAX RH                   61          22          53          23          60
RH                        55 62 39 24 22 32 42 49 51 50 31 23 26 36 49 57 59 57
WIND DIR                  NW NW NW NW NW NW NW NW NW SW  S SW SW SW SW  W  W  W
WIND SPD                   6  9 10 10  9  5  2  1  1  1  2  4  5  3  4  5  6  6
WIND GUST                 23 27 31 29 25 19             12    17 16 18 20 24 27
CLOUDS                    FW B1 FW FW FW CL FW CL FW CL FW FW FW FW SC SC SC B1
CLOUDS(%)                 15 58 15 20  6  5  7  5  6  4  7 12 15 19 29 33 39 56
VSBY                      10 10 10 10 10 10 10 10  9 10 10  9  9  9 10 10  9   
POP 12HR                      5           5           0           0           5
RAIN SHWRS                                                                   IS
MIX HGT                   <1  3  5  7  6  2 <1 <1 <1 <1  4  5  6 <1            
T WIND DIR                 W NW NW NW NW NW NW NW  W  S  W  W SW  S            
T WIND SPD                 5 16 20 20 20 18  5  2  2  4  5  9  9  5            
DISPERSION                PR             PR VP VP VP             VP VP PR PR   
ADI                        4 57120 97 95  8  3  1  1  5 26 54 64  3            
MAX LVORI                  3  1  1  1  1  2  2  2  2  2  2  1  1  2            
STABILITY                  E  B  B  C  C  F  G  G  G  A  A  A  A  G            
CEILING                    None  None  None  None  None  None  None  None      
STA PRES                  27.87 27.95 27.96 28.01 28.04 28.04 27.91            


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       74      53      80      54      82      59      78      54      71
TEMP          74 65 55 55 78 70 58 57 81 73 61 61 77 69 59 56 69 64
DEWPT         45 45 45 48 49 47 45 47 46 46 47 50 53 52 49 50 50 49
RH            35 48 69 77 36 44 62 69 29 38 60 67 43 55 69 80 51 58
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 FW FW FW FW FW FW FW SC SC SC B1 B2 B2 B1 B1 B1
POP 12HR           30      10      10       0      10      20      70      60      50
RAIN SHWRS    IS SC                         IS IS SC NM NM SC SC SC
TSTMS            IS                                  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