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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sun Sep 20 2026

VAZ024-210800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
231 PM EDT Sun Sep 20 2026

Date           09/20/26      Mon 09/21/26            Tue 09/22/26            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                 65          83          62          74          56
TEMP          84 76 71 68 66 66 76 81 80 71 67 66 65 64 70 74 72 66 63 62 59 56
DEWPT         68 67 67 66 65 66 69 69 68 67 65 64 64 63 65 67 66 65 63 62 59 56
MIN/MAX RH                  100          63          99          80         100
RH            59 74 87 93 97100 79 67 67 87 93 93 97 97 84 79 81 97100100100100
WIND DIR       W  S  N  N  N  N  E  E  E  E  E NE  E NE  E  E NE NE NE NE NE NE
WIND SPD       2  1  0  0  0  0  2  3  3  3  1  1  1  1  2  3  4  5  4  4  5  5
WIND GUST                                                        16 19 20 21 21
CLOUDS        B1 B2 B2 SC SC SC B1 B1 B2 OV OV OV OV OV OV OV OV OV OV B2 B2 B2
CLOUDS(%)     61 87 75 31 30 47 62 69 77 90100 99 93 88 98100100100100 87 85 80
VSBY          10 10 10 10  3  2 10  7  6  3  5  2  2  3  4  3  3  6  6  3  3  6
POP 12HR                      5          70          80          90          90
RAIN SHWRS                   IS    SC SC NM  O NM SC SC SC  O  O  O  O  O  O NM
TSTMS                              SC SC SC SC             IS IS               
MIX HGT        2 <1 <1 <1 <1 <1  2  3  2 <1 <1 <1 <1 <1  1  2  2  1            
T WIND DIR    SW  S  S NW  N  N  E  E  E NE NE NE NE  N NE NE NE NE            
T WIND SPD     8  4  2  2  2  3  5  6 10 10  8  5  6  9  9 12 13 12            
DISPERSION       VP VP VP VP             VP VP VP VP             PR VP VP PR   
ADI           20  2  1  1  1  3 13 20 22  5  7  3  3  7 15 25 24 14            
MAX LVORI      2  4  6  7  8  9  4  3  3  5  6  6  8  6  4  3  4  5            
STABILITY      C  F  F  G  G  A  C  C  C  F  D  F  F  C  C  D  D  D            
CEILING        3800 11200  None  1300  1700   300   300  1100  1800  1100      
STA PRES      28.44 28.44 28.46 28.51 28.50 28.57 28.57 28.60 28.62            


Date           09/23Thu 09/24/26Fri 09/25/26Sat 09/26/26Sun 09/27/26
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       66      53      64      50      71      48      75      49      77
TEMP          65 60 57 54 63 59 53 51 68 61 52 49 72 64 53 50 75 65
DEWPT         61 59 57 54 58 56 53 50 53 52 48 47 51 52 49 48 54 57
RH            87 96100100 84 90100 96 59 72 86 93 48 65 86 93 48 75
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B1 B2 B1 SC SC SC SC SC FW SC SC SC SC SC
POP 12HR           70      70      40      20       5       5       5       5       5
RAIN SHWRS    NM NM NM SC SC SC 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