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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri Aug 21 2026

NCZ005-212000-
RAWS 310540
36.38N  79.70W Elev. 858 ft
801 AM EDT Fri Aug 21 2026

Date             Fri 08/21/26            Sat 08/22/26            Sun 08/23/26
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                 85          67          84          66          85
TEMP                77 83 81 74 71 70 69 69 75 82 82 75 71 68 66 68 79 84 82 74
DEWPT               69 70 71 72 71 70 69 69 72 72 71 71 70 68 66 67 67 64 61 62
MAX/MIN RH                   65         100          68         100          48
RH                  76 65 72 93100100100100 90 72 69 87 97100100 97 67 51 49 66
WIND DIR            NE  E  E  E SE  S  S  S SW  W SW SE SW  W  W  W NW NW NW NW
WIND SPD             6  5  4  3  2  1  1  1  2  3  3  2  2  2  3  3  5  6  5  3
CLOUDS              B2 B1 B1 B2 B2 OV B2 B2 B1 B1 B1 SC SC SC SC FW FW FW FW FW
CLOUDS(%)           70 65 60 87 70 91 76 81 65 61 66 38 33 30 29 16  9 13 10  8
VSBY                10 10 10  8  5  4  7  5 10 10 10 10 10 10  0 10 10 10 10 10
POP 12HR                     60          80          40          10           0
RAIN SHWRS             SC SC  O NM SC IS       SC SC                           
TSTMS                  SC SC SC SC IS          SC SC                           
MIX HGT              2  3  3 <1  1 <1 <1 <1  2  3  4 <1 <1 <1 <1 <1  3  6  7 <1
T WIND DIR          NE NE NE NE NE  E SE  S  S  S SW NE  S SW SW  W NW  W  W  W
T WIND SPD          10  9  6  5  3  3  2 11  9  8  3  1  1  2  3  3 10 10  8  4
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                 25 38 22  3  2  2  1 13 24 33 15  1  1  1  2  3 41 67 64  2
MAX LVORI            3  3  3  6 10 10 10  5  4  3  3  6  9 10 10  8  1  1  1  3
STABILITY            C  B  C  F  F  F  F  B  B  B  B  G  G  G  G  A  A  B  A  G
CEILING              2700  4600  1900  1100   800  2600  None  None  None  None
STA PRES            29.30 29.29 29.28 29.25 29.23 29.17 29.16 29.14 29.21 29.20


Date          Mon 08/24/26Tue 08/25/26Wed 08/26/26Thu 08/27/26
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       61      84      61      83      64      85      67      84
TEMP          64 63 83 76 64 62 81 76 67 66 83 77 69 69 82 76
DEWPT         57 58 59 61 58 58 64 65 64 66 70 70 69 68 72 72
RH            78 84 44 60 81 87 56 69 90100 65 79100 97 72 87
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW SC SC SC SC SC SC SC SC B1 B1 B1 B1 B2
POP 12HR            0       5       5       5      10      30      50      60
RAIN SHWRS                                     SC SC SC SC NM
TSTMS                                          SC IS       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