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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
337 AM EDT Tue Aug 18 2026

NCZ003-182000-
RAWS 310302
36.35N  80.48W Elev. 1076 ft
337 AM EDT Tue Aug 18 2026

Date             Tue 08/18/26            Wed 08/19/26            Thu 08/20/26
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                 88          67          89          70          92
TEMP          72 73 82 87 88 83 77 73 69 70 79 85 88 83 77 74 72 72 84 90 87 80
DEWPT         70 69 68 67 65 65 66 66 65 64 64 62 61 62 66 66 65 67 68 68 68 69
MAX/MIN RH                   46          87          41          85          48
RH            93 87 63 52 47 55 69 79 87 81 60 46 40 49 69 76 79 84 59 49 53 69
WIND DIR      NW NW  N NW NW  N  N  N  N  N  N NW NW  W SW  N  N  N  S SW SW  W
WIND SPD       4  3  6  5  5  4  5  4  4  3  3  3  3  2  2  2  2  2  3  4  4  2
CLOUDS        SC CL FW FW FW FW FW FW SC CL FW FW CL CL FW FW FW FW FW B1 B1 B1
CLOUDS(%)     41  3 16 18 15 15 21 20 27  4 10  7  3  2 14 10 16 17 17 59 59 67
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10  6  6  6
POP 12HR                      5           0           0           0          40
RAIN SHWRS                                                             SC SC SC
TSTMS                                                                  SC SC SC
MIX HGT       <1 <1  4  5  5 <1 <1 <1 <1 <1  4  5  6 <1 <1 <1 <1 <1  4  7  6 <1
T WIND DIR    NW NW  N NW NW NW NW NW  N  N  N NW NW  S  S SW  W SW  W  W  W NW
T WIND SPD     5  8 12  9  9  6  6  5  4  3  5  3  2  2  2  2  1  1 12  5  9  2
DISPERSION    VP             VP PR VP VP             VP VP VP VP             VP
ADI            4  8 55 59 58  3  3  3  2  3 27 23 16  1  1  1  1  1 58 45 61  1
MAX LVORI      6  5  1  1  1  3  3  5  6  5  2  2  2  2  3  4  4  5  1  1  1  3
STABILITY      E  A  B  A  A  F  F  F  F  A  A  A  A  G  G  G  G  A  A  B  B  F
CEILING              None  None  None  None  None  None  None  None  None  9300
STA PRES            28.88 28.84 28.89 28.90 28.92 28.89 28.90 28.90 28.94 28.91


Date          Fri 08/21/26Sat 08/22/26Sun 08/23/26Mon 08/24/26
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       69      86      67      84      66      86      64      85
TEMP          71 71 85 76 70 68 81 77 68 67 83 77 66 66 82 77
DEWPT         69 69 70 70 70 68 70 68 67 65 64 63 61 61 61 60
RH            93 93 61 82100100 69 74 97 93 53 62 84 84 49 56
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 SC OV B2 B1 B1 B1 SC SC FW SC SC FW FW SC
POP 12HR           50      70      70      50      20      10       5       5
RAIN SHWRS    SC SC IS NM NM IS    SC IS                     
TSTMS         SC       SC SC       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