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 Aug 25 2026

VAZ012-260800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
501 PM EDT Tue Aug 25 2026

Date           08/25/26      Wed 08/26/26            Thu 08/27/26            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                 56          81          61          81          61
TEMP             67 60 58 57 59 75 80 77 70 65 64 62 64 75 79 77 70 66 64 63 64
DEWPT            53 52 51 51 53 61 61 63 62 62 61 59 61 66 65 66 64 63 61 60 62
MIN/MAX RH                   82          52          92          61          94
RH               61 75 77 80 80 62 52 62 76 90 90 90 90 74 62 69 81 90 90 90 93
WIND DIR         NW  N  N  N SE  S SW  S  S  S  S SW SW SW SW SW  S  N  N  N  W
WIND SPD          1  0  0  0  1  2  2  2  1  1  1  1  1  1  2  1  1  0  0  0  1
CLOUDS           CL FW FW SC SC FW B1 SC FW SC B1 B1 B2 B1 B2 B2 B1 B2 B2 B2 B2
CLOUDS(%)         4  9 12 30 39 22 60 49 22 43 53 59 72 55 70 70 69 74 76 71 75
VSBY             10 10 10 10 10 10 10 10 10 10  7  7  7  7  7  7  7  7  7  7  7
POP 12HR                      0          10          10          60          40
RAIN SHWRS                                                 IS NM SC SC IS    SC
TSTMS                                                      IS SC SC IS         
MIX HGT          <1 <1 <1 <1 <1  4  6  4 <1 <1 <1 <1 <1  3  6  3 <1            
T WIND DIR        E SE  S SW SW  S SW SW  S  S  S SW  S  W SW  S SW            
T WIND SPD        2  2  2  1  1 13 10 10  5  4  4  3  3 11  8  2  6            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               1  1  1  1  1 63 65 47  3  2  2  2  4 42 51 10  3            
MAX LVORI         3  3  4  6  5  1  1  1  4  6  6  7  6  3  1  3  5            
STABILITY         G  G  G  G  A  A  B  A  G  F  F  F  B  B  B  B  F            
CEILING              None  None  None  None  None   100  1000  2000   100      
STA PRES            27.35 27.34 27.36 27.31 27.30 27.28 27.28 27.25            


Date           08/28Sat 08/29/26Sun 08/30/26Mon 08/31/26Tue 09/01/26
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       78      59      80      61      84      62      85      63      85
TEMP          77 70 62 61 78 70 63 63 81 74 64 64 82 76 66 66 83 76
DEWPT         66 65 61 61 65 64 62 63 64 64 62 63 64 64 63 63 65 64
RH            69 84 97100 64 81 97100 56 71 93 97 55 66 90 90 55 66
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B1 B1 B1 B1 SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR           60      10      40       5      20       5      10       0      20
RAIN SHWRS    SC NM       IS SC          IS                   IS IS
TSTMS         IS 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