549  
FNUS72 KFFC 130920  
FWSFFC  
 
SPOT FORECAST FOR CL51WHITEHALL PROJECT...USFS  
NATIONAL WEATHER SERVICE PEACHTREE CITY GA  
520 AM EDT SUN SEP 13 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0755 EDT ON SEPTEMBER 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
HIGH LVORI THIS MORNING AS THE AIRMASS REMAINS MOIST IN THE WAKE  
OF YESTERDAY'S RAINFALL. PATCHY DENSE FOG IS POSSIBLE THROUGH 9AM.  
RAIN CHANCES ARE NEGLIGIBLE THIS AFTERNOON, WITH MOSTLY SUNNY  
SKIES EXPECTED. MIXING HEIGHTS ARE LIKELY TO PEAK AROUND 6-6.5KFT  
AT 4PM. SURFACE WINDS WILL REMAIN OUT OF THE NW AT 4 TO 7 MPH.  
 
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....AROUND 68.  
MAX HUMIDITY........94 PERCENT.  
DEWPOINT............69.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 6 TO 8 MPH SHIFTING TO THE NORTH 5 TO  
6 MPH AFTER 3 AM.  
SMOKE DISPERSAL.....GOOD (32300 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (1400 KNOT-FT) LATE IN THE  
NIGHT.  
LVORI...............4.  
ADI.................47 EARLY IN THE EVENING DECREASING TO 2 LATE IN  
THE NIGHT.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (KFT).......5.0 INCREASING TO 25 IN THE LATE EVENING AND  
OVERNIGHT.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........18 13 7 3 6 9 8 3 4 3 2 3  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............90 88 82 79 77 76 75 74 73 72 70 70  
DEWPOINT........70 71 70 70 70 70 69 69 69 68 68 67  
RH..............51 57 67 74 79 81 84 85 87 89 92 93  
20 FT WIND DIR..W NW W W NW NW NW NW NW NW NW NW  
20 FT WIND SPD..3 2 2 1 1 1 1 1 1 1 1 1  
20 FT WIND GUST.12 8 7 7 7 7 7 6 6 6 6 6  
MIX HGT (KFT)...4.7 1.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.3  
TRANSP WIND DIR.NW W W NW W NW NW N N N N N  
TRANSP WIND SPD.8 7 6 7 7 7 7 7 6 6 6 5  
LVORI...........1 3 3 3 4 5 5 5 6 6 7 7  
ADI.............47 3 3 3 3 3 3 3 3 3 2 2  
VRATE KT-FT/1K..32 8 2 3 3 3 3 2 2 2 2 1  
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR  
CEILING (KFT)...5.0 5.0 5.0 25 25 25 25 25 25 25 25 25  
   
MONDAY
 
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 96.  
MIN HUMIDITY........43 PERCENT.  
DEWPOINT............69.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......6100 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 7 MPH.  
SMOKE DISPERSAL.....POOR (1400 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (34800 KNOT-FT) IN THE  
AFTERNOON.  
LVORI...............4.  
ADI.................2 EARLY IN THE MORNING INCREASING TO 49 IN THE  
AFTERNOON.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (KFT).......25.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........8 6 8 8 10 11 9 12 11 1 3 12  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............69 69 69 73 80 85 89 91 93 94 95 95  
DEWPOINT........67 67 67 70 71 71 71 71 70 70 70 69  
RH..............94 93 93 87 74 63 56 52 47 46 44 43  
20 FT WIND DIR..N NW N N NE NE NE NE NE NE NE NE  
20 FT WIND SPD..1 1 2 1 1 2 2 2 2 2 2 2  
20 FT WIND GUST.6 6 7 6 6 7 8 8 8 8 8 9  
MIX HGT (KFT)...0.3 0.3 0.3 0.8 1.3 2.5 3.8 5.0 5.8 6.1 5.9 6.0  
TRANSP WIND DIR.N N N NE NE NE NE NE N N N N  
TRANSP WIND SPD.5 5 5 6 6 5 6 6 6 6 6 7  
LVORI...........7 6 6 5 3 2 2 1 1 1 1 1  
ADI.............2 5 5 6 10 17 28 37 43 45 44 49  
VRATE KT-FT/1K..2 2 1 4 6 11 19 26 30 32 31 35  
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR  
CEILING (KFT)...25 25 25 25 25 25 25 25 25 25 25 25  
 

 
FORECASTER...LMARLOW  
REQUESTED BY...BENJAMIN THIGPEN  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2621579.2/FFC  
.DELDT 09/13/26  
.FORMATTERVERSION 2.0.0  
.EMAIL BENJAMIN.THIGPEN@UGA.EDU  
 
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