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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sat Sep 19 2026

VAZ024-200800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
401 PM EDT Sat Sep 19 2026

Date           09/19/26      Sun 09/20/26            Mon 09/21/26            Tue
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                 65          88          65          82          61
TEMP          80 73 68 67 66 66 76 86 84 75 70 68 67 66 75 80 77 70 66 65 63 62
DEWPT         66 66 66 66 65 65 68 69 70 71 69 68 67 66 70 70 68 67 65 64 63 62
MIN/MAX RH                   99          55         100          69         100
RH            62 79 93 97 97 97 76 57 63 87 97100100100 84 72 74 90 97 97100100
WIND DIR      SE SE  N SE  E SE SW SW SW  S SW  N  N  N  E  E  E  E  E NE NE NE
WIND SPD       3  1  0  1  1  1  3  3  2  1  1  0  1  1  2  3  3  3  2  1  1  2
CLOUDS        FW SC B1 B2 B1 B1 B1 B1 B1 B1 SC SC SC SC B2 B2 B2 OV OV OV B2 B2
CLOUDS(%)     22 33 63 76 58 53 52 54 55 65 48 37 44 50 75 78 83 88 92 90 81 78
VSBY           9  9  8  7  5  5 10  6  5  6  6  4  3  3 10 10 10 10            
POP 12HR                     20          40          10          70          70
RAIN SHWRS                         SC SC             IS IS NM NM NM NM SC SC SC
TSTMS                              SC SC                   IS SC IS            
MIX HGT        3 <1 <1 <1 <1 <1  2  4  2 <1 <1 <1 <1 <1  2  2  2 <1            
T WIND DIR     S SE SE  S  S  S SW SW  S SW  S NW  N NE  E NE NE NE            
T WIND SPD     5  6  5 10  9  8 10  5 10  9  3  2  2  2 10 10 10 11            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           23  3  3  5  4  6 28 21 27  4  2  1  1  2 24 28 21  5            
MAX LVORI      2  4  6  7  9  8  3  2  2  6 10 10 10  9  4  3  3  6            
STABILITY      B  G  F  F  F  C  C  C  C  F  F  G  F  A  C  C  C  F            
CEILING              2900  1800  None  3000  None  None   300   700   300      
STA PRES            28.55 28.53 28.52 28.43 28.44 28.47 28.54 28.54            


Date           09/22Wed 09/23/26Thu 09/24/26Fri 09/25/26Sat 09/26/26
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       73      57      62      54      65      52      73      51      74
TEMP          72 65 60 57 62 57 55 55 64 59 54 53 70 63 54 52 72 64
DEWPT         67 65 60 57 60 57 55 55 60 58 54 53 57 56 52 50 54 54
RH            84100100100 93100100100 87 96100100 63 78 93 93 53 70
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 OV OV OV B2 B2 B2 B2 B1 B2 B1 B1 SC SC SC SC SC SC
POP 12HR           70      70      60      50      40      20      20      10      10
RAIN SHWRS    SC NM NM NM NM SC SC SC SC 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