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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sun Apr 19 2026

VAZ018-192000-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
331 AM EDT Sun Apr 19 2026

Date             Sun 04/19/26            Mon 04/20/26            Tue 04/21/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 59          40          56          33          70
TEMP          48 46 50 56 58 49 45 44 41 40 48 54 55 47 39 35 33 36 55 66 69 61
DEWPT         42 36 32 23 20 19 21 25 28 27 25 21 19 17 18 17 17 19 25 29 32 34
MAX/MIN RH                   23          60          23          53          24
RH            80 68 50 27 23 30 38 47 59 59 40 27 24 30 42 47 51 50 31 25 25 36
WIND DIR      NW NW NW NW NW NW  W  W NW NW NW NW NW NW NW  W  W  W SW SW SW SW
WIND SPD      16 18 14 13 11  6  4  5  6  8 10 10  9  5  2  1  1  1  2  4  4  3
WIND GUST     41 46 41 36 32 24 20 19 23 27 29 28 26 20             12 14 16 14
CLOUDS        B2 OV SC FW CL CL FW FW SC SC FW FW CL CL CL CL FW CL CL FW FW FW
CLOUDS(%)     81 88 45 20  4  5  7 22 32 30 15  7  3  4  4  5  7  4  3 17 13 13
VSBY          10 10 10 10 10 10 10 10 10 10 10  9  9  9 10 10 10 10  9  9  9  9
POP 12HR                     20           5           0           0           0
RAIN SHWRS    NM IS                                                            
MIX HGT        2  2  4  5  6  2 <1 <1 <1  2  5  6  6  2 <1 <1 <1 <1  4  5  6 <1
T WIND DIR    NW NW NW NW NW NW SW  W NW NW NW NW NW NW NW NW  W SW  W SW  W  S
T WIND SPD    31 31 36 32 27 19  4  6 18 23 20 21 20 18 13  2  2  2  5 11 18  5
DISPERSION    GD             PR VP PR PR             PR VP VP VP             VP
ADI           35 60131135124  9  2  3  8 71118155147  8  6  1  1  2 28 69135  3
MAX LVORI      3  1  1  1  1  2  2  2  3  1  1  1  1  2  2  2  2  2  2  1  1  2
STABILITY      D  D  C  C  C  F  F  F  F  B  B  B  B  F  G  G  G  A  A  A  A  G
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            27.79 27.82 27.85 27.86 27.93 27.94 28.00 28.01 28.00 27.85


Date          Wed 04/22/26Thu 04/23/26Fri 04/24/26Sat 04/25/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       49      76      53      81      54      83      58      78
TEMP          53 55 74 67 55 55 79 70 56 57 81 72 61 60 75 68
DEWPT         36 40 45 41 45 47 45 43 44 46 47 47 46 49 52 51
RH            52 57 35 39 69 74 30 38 64 67 30 41 58 67 45 54
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC SC FW FW FW FW FW FW FW SC SC B1 B1 B2
POP 12HR            5      20      10      10       5      10      30      60
RAIN SHWRS             IS                         IS SC SC NM
TSTMS                                                      SC

$$


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