National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Fri Sep 25 2026

VAZ046-260800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
231 PM EDT Fri Sep 25 2026

Date           09/25/26      Sat 09/26/26            Sun 09/27/26            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                 50          75          53          73          57
TEMP          71 62 55 53 51 51 67 74 73 64 59 56 53 55 67 72 71 65 62 59 58 58
DEWPT         43 43 41 42 43 44 48 48 49 49 50 50 49 49 52 53 54 55 55 54 54 55
MIN/MAX RH                   76          39          84          51          91
RH            36 50 59 66 74 77 50 40 43 58 72 80 86 80 59 51 55 70 78 83 86 90
WIND DIR       N  N  N  N NW NW  N  N  N  N  N NW NW  W NW NW  N  N NW  W  W  W
WIND SPD      11  6  6  6  8  8 10 10 10  5  5  4  5  5  8  8  8  5  3  3  3  4
WIND GUST                          20                                          
CLOUDS        FW FW CL CL CL CL FW FW FW FW SC SC SC FW SC SC B2 B2 B2 B1 B1 B1
CLOUDS(%)     12  6  1  1  4  0 12 12 16 21 36 41 28 22 35 50 75 74 71 64 67 54
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0           0          10          10          10
SPRINKLES                                            SC SC SC SC SC SC         
MIX HGT        4 <1 <1 <1 <1 <1  3  5  5 <1 <1 <1 <1 <1  2  5  5 <1            
T WIND DIR     N  N  N  N NW NW  N  N  N  N  N  N  N  W  W NW NW  N            
T WIND SPD    23  8  9  9  9  8 19 26 26 26 10 12 12 10 18 19 18 13            
DISPERSION       PR PR PR PR             PR PR VP PR             PR VP VP VP   
ADI           86  4  4  4  6  8 61110112 12  5  8  6 11 48107 55  9            
MAX LVORI      1  2  3  3  3  4  1  1  1  2  3  4  5  4  1  1  1  3            
STABILITY      C  F  F  F  E  B  C  C  C  F  F  E  F  B  B  B  D  E            
CEILING        None  None  None  None  None  None  None  None  3900  4000      
STA PRES      29.30 29.28 29.23 29.21 29.21 29.22 29.14 29.09 29.06            


Date           09/28Tue 09/29/26Wed 09/30/26Thu 10/01/26Fri 10/02/26
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       74      58      80      58      83      60      83      62      83
TEMP          73 70 61 59 76 69 60 59 80 72 63 61 80 73 65 63 80 73
DEWPT         60 62 61 59 62 62 60 59 62 63 61 61 65 65 63 63 66 66
RH            64 76100100 62 78100100 54 73 93100 60 76 93100 62 79
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 B1 B1 SC SC SC FW FW FW FW SC SC SC SC SC SC B1
POP 12HR            0       0       0       0       0       0       5      10      20
RAIN SHWRS                                                    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