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

VAZ024-180800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
432 PM EDT Fri Apr 17 2026

Date           04/17/26      Sat 04/18/26            Sun 04/19/26            Mon
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                 57          90          54          64          41
TEMP          84 75 67 62 58 60 78 87 89 78 73 65 62 57 56 60 59 54 49 44 42 44
DEWPT         46 47 47 48 49 51 54 54 53 54 56 56 53 46 37 31 28 25 23 27 29 29
MIN/MAX RH                   75          29          76          30          61
RH            27 37 49 60 72 72 43 32 29 43 55 73 72 67 49 33 30 32 36 51 60 55
WIND DIR      NW NW NW  N  N  N  S SW  S SW SW  W NW NW NW NW NW NW NW  W  W NW
WIND SPD       8  2  1  1  1  0  2  6  6  3  3  2  5  9 10 10  9  5  3  2  2  3
WIND GUST                             17 13       17 25 25 23 23 19            
CLOUDS        FW FW FW SC SC SC FW SC B1 B2 B2 B2 B2 OV B2 B1 SC CL CL CL FW FW
CLOUDS(%)     12 15  9 41 28 30 19 39 59 71 78 77 79 89 80 58 28  3  3  5 11 25
VSBY          10 10  8  7  7 10 10 10  7  9  8 10 10 10  8  8  9  9 10  8  9   
POP 12HR                      0           5          70          50           5
RAIN SHWRS                               NM NM NM NM SC SC IS IS               
MIX HGT        9 <1 <1 <1 <1 <1  4  6  8 <1 <1 <1  2  3  4  7  8  2            
T WIND DIR    NW NW NW  N  N  N  S SW SW  S SW  W NW NW NW NW NW NW            
T WIND SPD    12  2  3  3  3  1 14 17 19 10  8 11 17 25 26 26 26 12            
DISPERSION       VP VP VP VP             VP VP VP PR             PR VP VP VP   
ADI          111  1  2  2  2  1 71122 98  5  4  5 12 80102192200  6            
MAX LVORI      1  2  2  3  3  3  1  1  1  2  3  3  4  1  1  1  1  2            
STABILITY      B  G  G  F  G  A  A  B  C  F  F  F  E  C  C  B  B  F            
CEILING              None  None  None  8800  5700  2900  6400  None  None      
STA PRES            28.48 28.48 28.46 28.36 28.33 28.35 28.52 28.54            


Date           04/20Tue 04/21/26Wed 04/22/26Thu 04/23/26Fri 04/24/26
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       63      34      72      47      82      52      83      54      87
TEMP          61 55 39 37 66 64 52 51 79 73 58 54 80 74 60 57 83 76
DEWPT         23 20 23 23 28 33 36 40 45 45 46 48 49 49 49 48 50 50
RH            23 25 52 56 24 31 54 66 30 37 64 80 34 41 67 72 32 40
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW CL CL CL FW FW FW SC SC FW FW FW SC FW FW FW SC
POP 12HR            0       0       0       0      20       5      10       5      20
RAIN SHWRS                               IS                      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