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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EDT Sun Aug 16 2026

VAZ018-170800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
631 PM EDT Sun Aug 16 2026

Date           08/16/26      Mon 08/17/26            Tue 08/18/26            Wed
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                 69          85          67          84          63
TEMP             75 74 73 72 72 80 85 82 74 72 70 69 69 79 83 81 71 68 65 64 66
DEWPT            70 69 68 68 68 71 71 70 69 68 67 66 66 68 67 66 63 61 60 60 61
MIN/MAX RH                   94          63          94          58          91
RH               84 84 84 87 87 74 63 67 84 87 90 90 90 69 59 60 76 78 84 87 84
WIND DIR          W  W  W  W NW NW  W  W  W  W NW NW NW NW NW NW NW NW NW NW NW
WIND SPD          4  5  6  6  6  6  6  6  4  3  3  2  3  3  4  5  3  2  1  1  2
WIND GUST        16 20 21 24 25 21 18 19 16 13                16 13            
CLOUDS           B1 B1 B1 B1 SC SC B1 B1 B2 B2 SC SC FW SC SC FW FW CL CL FW FW
CLOUDS(%)        58 66 67 65 38 43 52 58 70 76 50 35 21 37 29 17  8  5  4  7  8
VSBY             10  9  7  6  4 10 10 10 10  8  6  7 10 10 10 10 10 10 10 10   
POP 12HR                     40          30          20           5           0
RAIN SHWRS       SC SC SC IS       IS SC IS IS                                 
TSTMS            SC                IS SC                                       
Obvis                      F F+                                                
MIX HGT          <1 <1 <1 <1  1  3  4  4 <1 <1 <1 <1 <1  3  5  6 <1            
T WIND DIR       SW NW  W  W NW NW NW  W NW NW NW NW NW  N  W  W NW            
T WIND SPD       11 14 10  6 13 17 14 13 12  5  8  5  6  8  9 11 13            
DISPERSION       VP PR PR PR             VP VP VP VP             VP VP VP VP   
ADI               8 10  7  5 21 61 74 70  8  3  4  3  8 35 58 79  6            
MAX LVORI         4  4  4  5  4  3  1  1  4  6  6  6  5  3  1  1  3            
STABILITY         E  E  E  E  B  B  B  B  E  F  F  G  A  A  A  A  G            
CEILING              3100  None  None  9100  2600  None  None  None  None      
STA PRES            27.79 27.76 27.78 27.75 27.78 27.77 27.79 27.76            


Date           08/19Thu 08/20/26Fri 08/21/26Sat 08/22/26Sun 08/23/26
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       88      67      85      65      79      63      79      63      81
TEMP          87 78 70 69 83 74 68 66 77 71 66 64 77 71 65 65 79 71
DEWPT         65 64 62 63 69 67 64 63 67 65 62 62 67 64 61 61 65 61
RH            48 62 76 81 63 79 87 90 71 81 87 93 71 79 87 87 62 71
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW SC SC B1 B1 B1 B1 B2 B1 B1 B1 B1 SC B1 SC SC
POP 12HR            0       5      40      40      60      50      40      20      20
RAIN SHWRS                IS SC SC SC SC NM SC SC SC SC IS       IS
TSTMS                        SC IS       SC IS       SC          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