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

VAZ046-210800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
801 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                 67          81          63          72          57
TEMP                72 70 68 68 77 81 79 72 68 67 65 65 70 72 70 66 64 62 59 57
DEWPT               68 68 67 67 69 69 68 67 66 64 64 64 65 68 67 65 63 62 59 57
MIN/MAX RH                  100          67          98          83         100
RH                  87 93 97 97 76 67 69 84 93 90 97 97 84 87 90 97 97100100100
WIND DIR             W  N NE NE NE NE  E NE NE NE NE NE NE NE NE NE NE NE NE NE
WIND SPD             2  2  3  6  8  6  8  6  5  4  5  5  6  8 11 13 12 12 14 14
WIND GUST                                                        25 23 24 26 25
CLOUDS              B1 B1 SC SC B2 B1 B1 OV OV OV OV OV OV OV OV OV OV B2 B2 B2
CLOUDS(%)           58 60 42 41 81 56 63 99100 98 90 89 99 96 99100100 86 86 79
VSBY                 7  7  5  4  7  7  7  6  5  3  4  2  6  3  3  3  3  3  3  6
POP 12HR                     20          40          90          80          80
RAIN SHWRS                            IS NM  O  O SC SC SC  O  O  O  O NM NM NM
TSTMS                                 IS SC SC             IS                  
Obvis                     PF PF                                                
MIX HGT             <1 <1 <1 <1  2  2  2  1  1 <1 <1 <1  1  2  2 <1            
T WIND DIR          SW SW  N NE NE NE NE NE NE  N  N  N  N  N  N  N            
T WIND SPD           2  2  0  4 13 11 16 16 13 10 10 13 13 16 16 18            
DISPERSION          VP VP VP             PR PR VP PR             FR FR FR GD   
ADI                  1  1  0  5 26 25 33 11 12  7  7 15 21 29 30 16            
MAX LVORI            7  7  9  9  3  3  3  5  5  6  6  5  4  4  4  5            
STABILITY            F  F  F  B  D  D  D  E  D  E  E  D  D  D  D  D            
CEILING              9300  None  2900  1100   400   400   400   400   500      
STA PRES            29.22 29.24 29.30 29.30 29.36 29.37 29.40 29.42            


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       63      54      63      52      68      50      72      51      74
TEMP          63 61 58 55 62 59 54 53 66 60 52 52 70 62 53 53 73 64
DEWPT         61 60 58 55 59 57 53 51 54 52 48 48 52 53 50 49 56 57
RH            93 97100100 90 93 96 93 65 75 86 86 53 72 89 86 55 78
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC FW SC SC SC SC SC
POP 12HR           70      60      40      10       5       5       5       0       5
RAIN SHWRS    NM NM NM SC SC 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