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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri Sep 18 2026

NCZ005-182000-
RAWS 310540
36.38N  79.70W Elev. 858 ft
301 AM EDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
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                 94          69          82          66          87
TEMP          71 73 84 90 92 83 78 74 72 69 73 78 81 76 71 69 68 68 76 84 86 79
DEWPT         68 67 69 68 70 71 71 70 70 69 69 69 68 68 68 67 67 67 69 69 69 70
MAX/MIN RH                   47         100          66         100          57
RH            90 81 61 49 49 67 79 87 93100 87 74 65 76 90 93 97 97 79 61 57 74
WIND DIR       W NW  N  N  N  E  N  N NE NE NE NE NE  E  E  E  E SE  S SW SW SW
WIND SPD       2  2  4  4  3  2  1  2  3  5  6  6  6  3  2  2  1  1  2  3  3  1
CLOUDS        FW FW FW B1 B2 B1 B1 B2 B2 B1 B2 B2 B1 B1 B1 B1 B1 SC B1 B1 B1 SC
CLOUDS(%)     17 15 23 57 70 67 64 72 78 69 73 79 61 53 57 66 63 50 55 53 53 50
VSBY          10 10 10  8  8  8  7  7  7  7  7  7  7 10 10 10 10 10 10 10 10 10
POP 12HR                     50          40          50           5          30
RAIN SHWRS             SC SC SC SC SC IS IS SC SC                      SC SC IS
TSTMS                  IS SC SC                                        IS IS IS
MIX HGT       <1 <1  3  5  3 <1 <1 <1 <1  1  2  2  3 <1 <1 <1 <1 <1  3  4  4 <1
T WIND DIR     W  W  N  N NW  N  N  N  N NE NE NE NE NE NE  N NE  N SW SW  W SW
T WIND SPD     2  2 10 10 11 11  5  3  5 13  9  8  5  8  4  4  2  0  8  6  5  2
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            1  2 39 33 33  5  3  2  3 19 16 17 14  4  2  2  1  0 25 26 21  1
MAX LVORI      7  5  1  1  1  3  4  6  6  5  4  3  3  4  6  8 10 10  3  2  2  3
STABILITY      G  B  B  D  C  F  F  F  F  D  D  D  D  F  F  F  F  A  C  C  C  F
CEILING              None  4000  4300  2500  1200  1200  1200  1100  None  None
STA PRES            29.37 29.28 29.28 29.28 29.33 29.31 29.32 29.28 29.27 29.18


Date          Mon 09/21/26Tue 09/22/26Wed 09/23/26Thu 09/24/26
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       67      88      65      79      61      69      58      74
TEMP          70 68 87 78 68 66 77 73 65 61 67 65 61 59 72 69
DEWPT         69 68 70 70 68 66 69 68 65 61 64 64 61 59 63 64
RH            97100 57 76100100 76 84100100 90 97100100 73 84
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1
POP 12HR           20      70      70      70      60      40      30      20
RAIN SHWRS    IS       NM NM SC SC NM NM SC SC SC SC IS IS IS
TSTMS         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