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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1102 AM EDT Fri Apr 17 2026

VAZ018-172000-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
1102 AM EDT Fri Apr 17 2026

Date             Fri 04/17/26            Sat 04/18/26            Sun 04/19/26
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                 80          58          88          49          57
TEMP                   77 79 71 65 62 58 60 77 85 87 78 70 66 56 49 53 56 57 50
DEWPT                  48 46 46 45 45 46 49 52 51 53 55 56 55 50 41 36 29 23 21
MAX/MIN RH                   31          66          30          80          27
RH                     36 31 41 48 54 64 67 42 31 31 45 61 68 80 74 52 35 27 31
WIND DIR               NW NW NW NW NW  W  W  S  S SW SW  W  W NW NW NW NW NW NW
WIND SPD                9  8  2  1  1  1  1  3  6  6  4  5  6 10 16 14 13 12 10
WIND GUST                                   16 19 20 17 20 23 32 41 40 35 35 33
CLOUDS                 CL CL FW FW SC FW FW SC SC B1 B2 B2 B2 B2 B2 B2 SC SC CL
CLOUDS(%)               3  1  8  7 40 25 15 34 50 57 78 78 80 84 84 73 50 50  4
VSBY                   10 10 10 10  9 10 10 10 10  9  9  9 10 10 10  9  9  9  9
POP 12HR                      0           0          20          70          50
RAIN SHWRS                                     IS IS NM NM NM NM SC SC SC SC   
TSTMS                                                IS IS                     
MIX HGT                 6  6 <1 <1 <1 <1 <1  3  7  7 <1 <1 <1  2  2  3  6  7  3
T WIND DIR             NW NW NW  W NW  W  W SW SW SW  S SW  W NW NW NW NW NW NW
T WIND SPD             19 14  3  3  2  2  1 12 13 18 11 17 17 23 28 29 34 32 28
DISPERSION                   VP VP VP VP             VP PR PR FR             FR
ADI                   139116  2  2  1  1  1 50107 89  8 12 12 31 59 77155149 19
MAX LVORI               1  1  2  2  2  3  3  1  1  1  2  2  3  3  3  1  1  1  2
STABILITY               B  A  G  G  G  G  A  A  B  C  E  E  E  D  D  D  C  C  E
CEILING                    None  None  None  None  8300  3600  1900  7100  None
STA PRES                  27.77 27.79 27.78 27.76 27.65 27.62 27.65 27.75 27.79


Date          Mon 04/20/26Tue 04/21/26Wed 04/22/26Thu 04/23/26
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       38      58      35      71      50      77      52      79
TEMP          42 40 56 50 38 39 67 63 51 52 75 68 56 55 76 70
DEWPT         24 23 23 20 21 23 30 32 35 38 41 39 40 44 47 45
RH            48 50 27 30 50 52 25 31 54 59 29 34 55 66 36 41
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW CL CL FW FW FW FW SC SC SC FW FW SC
POP 12HR            5       0       0       0       0      10      10      20
RAIN SHWRS                                                 IS
TSTMS                                                      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