National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Tue Sep 8 2026

VAZ046-090800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
501 PM EDT Tue Sep 8 2026

Date           09/08/26      Wed 09/09/26            Thu 09/10/26            Fri
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                 61          89          67          94          68
TEMP             77 68 65 62 63 79 86 88 78 73 70 68 68 83 91 93 84 75 72 70 69
DEWPT            60 59 58 57 59 62 61 60 61 60 60 59 61 65 66 66 66 67 67 67 68
MIN/MAX RH                   86          39          78          41          98
RH               56 73 78 84 87 56 43 39 56 64 71 73 78 55 44 41 55 76 84 90 97
WIND DIR          S  S SW SW SW SW SW  S  S  S SW SW SW SW  W  W SW SW  W  N NE
WIND SPD          3  4  4  4  5  8  8  8  6  8  8  9  8  9 10 10  6  5  3  3  4
WIND GUST                                   18 19                17            
CLOUDS           SC FW SC FW FW FW FW SC FW FW CL CL CL CL FW SC B1 B1 B1 B1 B1
CLOUDS(%)        38 22 32 18 12  9 20 27  8 10  5  2  1  2  9 35 57 57 58 61 57
VSBY             10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0           0           0           5          40
RAIN SHWRS                                                       SC SC IS IS   
TSTMS                                                               IS         
MIX HGT          <1 <1 <1 <1 <1  3  7  7 <1 <1 <1 <1 <1  3  7  8 <1            
T WIND DIR       SE  S  S  S  S SW SW SW  S SW SW SW SW  W  W  W  W            
T WIND SPD        3  3  4  4  4 12 11 16  6  8  9  8  8 19 17 13  2            
DISPERSION       VP VP VP VP             PR PR PR PR             PR PR VP VP   
ADI               2  2  2  2  5 46 83117  3  5  6  5  8 68 83 69  2            
MAX LVORI         3  3  4  5  5  1  1  1  3  3  3  3  4  1  1  1  2            
STABILITY         G  F  F  F  B  B  B  B  F  E  E  E  B  C  C  C  E            
CEILING              None  None  None  None  None  None  None  None  5100      
STA PRES            29.54 29.55 29.54 29.43 29.39 29.36 29.32 29.21            


Date           09/11Sat 09/12/26Sun 09/13/26Mon 09/14/26Tue 09/15/26
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       86      66      84      67      88      68      89      65      89
TEMP          82 77 69 67 79 77 70 69 85 79 70 69 86 79 68 67 87 80
DEWPT         67 67 66 67 72 71 70 69 72 71 69 68 68 67 65 65 68 67
RH            61 71 90100 79 82100100 65 77 97 97 55 67 90 93 53 65
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 B1 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC FW FW FW
POP 12HR           30      50      60      50      20      10      10      10      10
RAIN SHWRS       SC SC SC SC NM SC       IS                        
TSTMS            SC SC SC    SC 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