National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Tue Aug 25 2026

VAZ018-260800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
801 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                 59          85          65          85          65
TEMP                64 62 60 63 76 84 79 72 69 68 67 68 78 84 79 71 69 68 67 67
DEWPT               53 53 53 54 62 63 65 64 63 62 62 64 68 68 68 66 65 63 63 64
MIN/MAX RH                   77          49          88          59          90
RH                  67 72 78 72 62 49 62 76 81 81 84 87 71 59 69 84 87 84 87 90
WIND DIR            NW  W  N  S SE  S  S  S  S SW SW SW SW  S SW SW SW  W  W  W
WIND SPD             1  1  0  1  3  4  5  3  3  3  2  1  2  3  3  1  1  1  1  1
WIND GUST                                13 13                                 
CLOUDS              FW FW FW SC SC B1 B1 B1 SC SC FW B1 B1 B2 B2 B1 B1 B2 B1 B1
CLOUDS(%)           14 18 19 28 34 61 69 55 44 48 24 54 57 75 75 69 68 72 66 68
VSBY                10  9  8  2 10 10 10 10 10  7  7  7  7  7  7  7  7  7  7  7
POP 12HR                      0          10          20          60          40
RAIN SHWRS                                                 IS NM SC SC       SC
TSTMS                                                      IS SC SC IS         
MIX HGT             <1 <1 <1 <1  3  6  3 <1 <1 <1 <1 <1  2  6  3 <1            
T WIND DIR           S SW  W  N  S  S  S  S  S  S  S  S SW SW SE NE            
T WIND SPD           2  1  2  0 10 10 11 10 11  4  3  2  8  5 10  8            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  1  1  1  0 41 46 38  5  5  2  2  2 24 37 40  4            
MAX LVORI            3  4  4  4  1  1  3  4  4  5  6  6  3  1  1  5            
STABILITY            G  G  G  A  A  C  C  F  F  F  G  B  A  B  B  F            
CEILING              None  None  None  3700  None  None 15900  2600   700      
STA PRES            27.89 27.89 27.90 27.83 27.82 27.81 27.80 27.77            


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       82      62      82      64      86      66      90      68      90
TEMP          81 71 65 64 80 72 66 66 83 75 68 68 87 78 70 70 87 78
DEWPT         68 66 63 63 68 66 64 65 68 65 64 65 66 65 64 65 69 66
RH            65 84 93 97 67 81 93 97 61 71 87 90 50 64 81 84 55 67
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B1 B1 B1 B1 SC SC SC SC FW FW SC SC SC SC SC SC
POP 12HR           60      20      30      10      20       0       5       0      20
RAIN SHWRS    SC NM IS    IS SC       IS IS                      IS
TSTMS         IS SC IS       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