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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Aug 19 2026

VAZ018-200800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
231 AM EDT Wed Aug 19 2026

Date           08/18/26      Wed 08/19/26            Thu 08/20/26            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                 63          87          68          84          65
TEMP                      64 66 77 85 85 75 71 70 69 69 77 82 80 72 69 68 67 66
DEWPT                     61 62 65 65 64 63 63 63 63 64 68 70 69 68 66 66 65 65
MIN/MAX RH                   93          48          84          65          98
RH                        90 87 67 51 50 66 76 78 81 84 74 67 69 87 90 93 93 97
WIND DIR                  NW NW  W  W NW NW  W  W  W  W  W  W  W NW NW NW NW  N
WIND SPD                   2  2  3  4  5  3  3  2  2  2  5  8  8  4  3  1  1  1
CLOUDS                    FW FW FW FW CL SC SC B1 FW SC B1 B2 SC B1 B1 B1 B1 B2
CLOUDS(%)                  7  9  8  6  5 29 39 60 15 50 53 81 40 52 54 67 67 72
VSBY                      10 10 10 10 10 10 10 10 10  7  7  6  7  7  7  6  6  6
POP 12HR                      0           0           5          40          50
RAIN SHWRS                                           SC SC SC IS SC SC SC SC NM
TSTMS                                                      SC IS SC IS         
MIX HGT                   <1 <1  4  5  6 <1 <1 <1 <1 <1  3  4  4 <1 <1 <1 <1 <1
T WIND DIR                NW NW NW  W  W  W  W  W SW SW  W  W  W NW NW  N  E NE
T WIND SPD                 3  3  6  6  9 10  2  2  1  2 23 20 12  8  4  3  9  8
DISPERSION                VP             VP VP VP VP             VP VP VP VP   
ADI                        2  3 34 44 63  5  1  1  1  2 86 90 56  5  2  2  4 10
MAX LVORI                  7  6  3  1  1  3  3  4  6  5  3  1  3  5  6  7  6  7
STABILITY                  G  A  A  A  A  G  G  F  G  A  B  B  B  E  F  F  F  B
CEILING                    None  None  None  None  None  7200  None  None 11900
STA PRES                  27.79 27.81 27.79 27.78 27.76 27.78 27.77 27.81 27.87


Date           08/21Sat 08/22/26Sun 08/23/26Mon 08/24/26Tue 08/25/26
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       79      65      82      63      81      60      81      60      83
TEMP          78 68 67 65 81 72 66 65 79 71 63 62 79 71 62 62 81 73
DEWPT         70 67 65 65 69 65 62 62 65 61 58 59 62 59 57 58 64 63
RH            76 97 93100 67 79 87 90 62 71 84 90 56 66 84 87 56 71
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 OV B2 B2 B1 B1 SC SC SC SC FW FW FW FW FW FW SC SC
POP 12HR           90      70      30      10      10       5       5      20      10
RAIN SHWRS    NM  O NM IS    SC                         IS         
TSTMS         IS SC SC       SC                                    

$$


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