National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sat Aug 22 2026

VAZ018-222000-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
331 AM EDT Sat Aug 22 2026

Date             Sat 08/22/26            Sun 08/23/26            Mon 08/24/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 81          63          79          57          77
TEMP          64 66 72 80 78 71 67 65 64 64 70 77 75 66 62 59 58 59 71 77 74 64
DEWPT         63 65 67 67 66 66 63 62 60 61 61 58 56 55 54 54 53 54 56 55 53 52
MAX/MIN RH                   62          90          50          88          45
RH            97 97 84 65 67 84 87 90 87 90 73 52 52 68 75 83 83 83 59 47 48 65
WIND DIR       N  N  S  S SW  W  W  W  W NW NW NW  W  W  W  W  W  W NW NW NW NW
WIND SPD       0  0  1  4  4  4  4  5  8  8  8  8  8  4  3  3  3  4  6  6  6  4
WIND GUST                          19 24 27 23 21 21 17             21 19 20 14
CLOUDS        B2 B2 B2 SC B2 B2 B1 SC FW FW FW CL FW FW FW CL CL FW FW FW FW FW
CLOUDS(%)     84 78 72 44 75 73 66 30 15 21  8  4 19 21 12  4  3  7 11 10  6 15
VSBY           2  2  9 10 10 10  8  8  7  6 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                     30          30           0           0           0
RAIN SHWRS             IS SC SC IS                                             
TSTMS                  IS SC IS                                                
MIX HGT       <1 <1  2  5  4 <1 <1 <1 <1  1  3  6  6  1 <1 <1 <1 <1  4  5  5 <1
T WIND DIR     E NE NE NW SE  S  S  W  W NW NW NW  W  W  W  W  W  W  W  W  W NW
T WIND SPD     3  3  2  2  5  6  4  4 10 20 21 17 16 13  4  8  3  4 19 13 12  5
DISPERSION    VP             VP VP PR PR             VP VP VP VP             VP
ADI            2  4  7 13 21  5  3  2  7 39 90108109  6  2  4  2  5 98 82 77  3
MAX LVORI      8  8  4  2  3  4  6  6  5  4  3  1  1  3  4  5  6  5  1  1  1  3
STABILITY      F  B  B  A  C  E  E  F  E  B  B  B  B  F  G  G  G  A  B  B  B  F
CEILING               700  1500  None  None  None  None  None  None  None  None
STA PRES            27.79 27.73 27.71 27.70 27.76 27.75 27.79 27.79 27.83 27.82


Date          Tue 08/25/26Wed 08/26/26Thu 08/27/26Fri 08/28/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       54      82      60      85      65      83      65      85
TEMP          56 56 81 70 62 62 83 74 67 67 80 72 67 66 83 74
DEWPT         51 51 55 56 54 56 64 63 62 64 69 67 64 64 68 66
RH            83 83 41 61 75 81 53 69 84 90 69 84 90 93 61 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW SC SC SC B1 B1 B1 B2 B1 SC SC SC
POP 12HR            0       0       0      20      20      60      40      20
RAIN SHWRS                         IS IS IS SC NM SC       IS
TSTMS                              IS 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