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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 PM EDT Thu Sep 17 2026

NCZ003-180800-
RAWS 310302
36.35N  80.48W Elev. 1076 ft
931 PM EDT Thu Sep 17 2026

Date           09/17/26      Fri 09/18/26            Sat 09/19/26            Sun
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                 68          90          68          80          66
TEMP                72 70 69 69 83 89 88 78 72 71 70 69 72 77 80 75 70 69 68 68
DEWPT               66 66 66 67 70 68 68 71 70 70 69 69 69 69 68 69 67 67 68 68
MIN/MAX RH                   94          48          99          67         100
RH                  81 87 90 93 65 50 52 79 93 97 97100 90 76 67 82 90 93100100
WIND DIR             W NW NW  N  N  N NE  E NE NE NE NE  E  E  E  E  E SE SE  S
WIND SPD             2  3  4  4  3  3  3  3  3  4  4  5  5  4  4  3  2  1  1  1
CLOUDS              SC SC FW FW FW SC B1 B1 B1 B2 B2 B1 B2 B1 B1 B1 B1 B2 B2 B1
CLOUDS(%)           38 26 22 16 14 38 58 57 52 74 86 67 79 64 66 67 69 70 75 65
VSBY                10 10 10 10 10  7  7  7  7  6  7  6  6  6  6  7            
POP 12HR                     20          40          60          50          20
RAIN SHWRS                         IS SC SC SC SC SC SC SC SC SC IS IS         
TSTMS                              IS SC SC IS             IS IS               
MIX HGT             <1 <1 <1 <1  4  6  3 <1 <1 <1 <1 <1  2  3  3 <1            
T WIND DIR           W  W NW  W  N NW NE  S  W NE NE NE NE  E  E  E            
T WIND SPD           3  2  3  2  8  6  4  2  3  6 10  9 10  6  5  4            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  2  1  2  2 36 46 14  1  2  5  7 12 20 15 13  2            
MAX LVORI            5  7  7  6  3  1  2  5  7  7  8  7  4  4  3  5            
STABILITY            G  G  F  B  B  B  C  F  F  E  E  D  D  D  D  F            
CEILING                    None  None  3400  7000   800   500  4300 11000      
STA PRES                  29.06 29.04 28.97 28.98 29.00 29.03 28.99            


Date           09/20Mon 09/21/26Tue 09/22/26Wed 09/23/26Thu 09/24/26
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       85      67      86      65      77      59      64      57      66
TEMP          82 78 69 68 83 76 67 66 73 69 63 60 62 60 57 57 64 61
DEWPT         70 71 69 68 69 70 67 66 69 68 63 60 62 60 57 57 62 61
RH            67 79100100 63 82100100 87 97100100100100100100 93100
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 B1 SC SC B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1
POP 12HR           40      40      60      60      60      50      40      20      20
RAIN SHWRS       SC SC IS IS NM NM SC SC NM SC IS SC SC IS       IS
TSTMS            SC IS       SC IS       IS          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