753  
FNUS72 KFFC 200855  
FWSFFC  
 
SPOT FORECAST FOR PINEKNOT M12...THE NATURE CONSERVANCY  
NATIONAL WEATHER SERVICE PEACHTREE CITY GA  
355 AM EST WED JAN 20 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 EST ON JANUARY 20.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
MILD START TO THE MORNING UNDER MOSTLY CLOUDY SKIES AND TEMPS  
AROUND 45, EXPECTED TO RISE TO A HIGH OF 57-58 BY 4PM THIS  
AFTERNOON. CLOUDS EXPECTED TO DECREASE TO PARTLY CLOUDY THROUGH  
THE MORNING, WITH THE POTENTIAL FOR BRIEF PERIODS OF CLEARING  
DURING THE AFTERNOON BEFORE GOING BACK MOSTLY CLOUDY BY 6 PM.  
RELATIVE HUMIDITY VALUES FORECAST TO START DECREASING AROUND 10AM,  
BOTTOMING OUT AROUND 32 TO 33 PERCENT BY 3 PM. WINDS ARE SHOULD  
BE BETWEEN 7-9KTS, WITH GUSTS UP TO 15KTS OUT OF THE WNW BEFORE  
GOING TURNING NW NEAR 1PM TODAY, DECREASING TO 3-5KTS BY 7PM.  
PLEASE FEEL FREE TO CONTACT US IF YOU HAVE ANY FURTHER QUESTIONS  
OR CONCERNS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING  
MOSTLY SUNNY (40-50 PERCENT).  
CWR.................0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 59.  
MIN HUMIDITY........32 PERCENT.  
DEWPOINT............39 DECREASING TO 29.  
WIND (20 FT)........NORTHWEST WINDS 7 TO 9 MPH.  
MIXING HEIGHT.......2700 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 7 TO 15 MPH.  
SMOKE DISPERSAL.....POOR (4300 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (33000 KNOT-FT) IN THE  
AFTERNOON.  
LVORI...............2.  
ADI.................6 INCREASING TO 26 LATE IN THE MORNING, THEN  
INCREASING TO 41 IN THE AFTERNOON DECREASING TO  
8 LATE IN THE AFTERNOON.  
HAINES INDEX........2 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (KFT).......8.0 INCREASING TO 25 IN THE LATE MORNING AND  
AFTERNOON.  
 
TIME (EST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........72 44 30 36 49 55 52 45 42 47  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1 1  
TEMP............46 49 50 52 54 56 57 58 58 56  
DEWPOINT........41 40 38 36 34 32 30 29 28 28  
RH..............84 73 64 54 46 40 36 33 32 34  
20 FT WIND DIR..NW NW N NW NW NW NW NW NW NW  
20 FT WIND SPD..7 8 9 9 9 8 8 8 8 7  
20 FT WIND GUST.10 11 12 13 12 12 12 12 11 10  
MIX HGT (KFT)...0.2 0.3 1.7 2.0 2.4 2.6 2.6 2.7 2.7 0.3  
TRANSP WIND DIR.NW NW N NW NW NW NW NW NW NW  
TRANSP WIND SPD.7 8 10 12 14 15 15 15 13 10  
LVORI...........3 3 2 2 1 1 1 1 1 2  
ADI.............5 6 22 29 38 43 44 44 39 8  
HAINES INDEX....2 2 4 4 4 4 4 4 4 4  
VRATE KT-FT/1K..4 11 15 19 29 33 32 31 31 23  
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR  
CEILING (KFT)...8.0 25 25 25 25 25 25 25 25 25  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT).  
CWR.................10 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 41.  
MAX HUMIDITY........76 PERCENT.  
DEWPOINT............31 INCREASING TO 34 OVERNIGHT.  
WIND (20 FT)........NORTHWEST WINDS AROUND 5 MPH EARLY IN THE  
EVENING BECOMING LIGHT.  
MIXING HEIGHT.......200 FT AGL.  
TRANSPORT WINDS.....WEST 1 TO 7 MPH.  
SMOKE DISPERSAL.....POOR (300 KNOT-FT).  
LVORI...............3.  
ADI.................3.  
HAINES INDEX........2 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (KFT).......25 DECREASING TO 7.0.  
 
TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........58 64 65 68 69 69 70 71 70 69 69 72  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 10 10 10 10 10 10  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............54 51 50 48 46 45 44 43 43 43 43 43  
DEWPOINT........29 30 31 32 33 33 34 34 34 34 35 35  
RH..............38 44 49 54 59 63 66 68 70 72 73 74  
20 FT WIND DIR..NW NW NW NW W W W W W W W W  
20 FT WIND SPD..5 3 2 2 2 1 1 1 2 2 3 3  
20 FT WIND GUST.7 5 4 4 2 2 2 4 5 6  
MIX HGT (KFT)...0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2  
TRANSP WIND DIR.NW NW NW NW NW W W W W W W W  
TRANSP WIND SPD.7 3 2 2 2 2 1 1 2 3 3 3  
LVORI...........2 2 2 2 3 3 4 4 4 3 3 3  
ADI.............4 2 1 1 1 1 1 1 1 1 2 2  
HAINES INDEX....4 4 4 4 4 4 4 4 4 4 2 2  
VRATE KT-FT/1K..8 1 1 1 0 0 0 0 0 1 1 1  
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR  
CEILING (KFT)...25 25 25 25 25 25 20 20 15 12 9.0 7.0  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS EARLY IN THE MORNING. CHANCE OF  
RAIN SHOWERS IN THE LATE MORNING AND EARLY  
AFTERNOON, THEN RAIN SHOWERS LIKELY LATE IN THE  
AFTERNOON.  
CWR.................10 PERCENT INCREASING TO 60 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 57.  
MIN HUMIDITY........72 PERCENT.  
DEWPOINT............38 INCREASING TO 49.  
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 12 MPH EARLY IN  
THE MORNING.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....WEST 3 TO 12 MPH INCREASING TO 10 TO 13 MPH  
LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (600 KNOT-FT).  
LVORI...............4.  
ADI.................7 INCREASING TO 14 IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
PCPN AMOUNT.........0.13 INCHES.  
CEILING (KFT).......6.0 DECREASING TO 1.2.  
 
TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........78 81 82 85 87 87 88 88 90 94 96 96  
WEATHER COV..... SCH SCH CHC CHC CHC CHC CHC LKY LKY LKY  
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW  
TSTM COV........  
CWR.............10 10 20 20 30 30 40 40 50 60 60 60  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............43 44 45 47 48 50 52 54 55 56 56 56  
DEWPOINT........36 37 38 39 40 42 44 46 48 49 50 50  
RH..............75 76 75 74 74 74 74 74 76 77 79 81  
20 FT WIND DIR..W W W W W W W W W W W W  
20 FT WIND SPD..3 3 5 5 6 8 9 10 12 12 12 10  
20 FT WIND GUST.6 5 6 6 8 10 13 14 16 16 16 14  
MIX HGT (KFT)...0.2 0.2 0.2 0.2 0.5 0.6 0.8 0.9 0.9 1.0 1.0 0.7  
TRANSP WIND DIR.W W W W W W W W W W W W  
TRANSP WIND SPD.3 3 5 6 7 8 10 12 13 13 12 10  
LVORI...........3 4 4 3 3 3 3 3 4 4 4 4  
ADI.............3 4 5 6 7 9 11 14 15 16 15 11  
HAINES INDEX....2 2 2 2 2 2 2 2 2 2 2 2  
VRATE KT-FT/1K..1 1 1 2 3 4 8 9 10 10 10 8  
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR  
CEILING (KFT)...6.0 6.0 5.0 5.0 5.0 5.0 4.0 3.5 3.0 2.5 1.8 1.2  
 

 
FORECASTER...MORGAN  
REQUESTED BY...MIKE THOMPSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2100803.0/FFC  
.DELDT 01/20/21  
.FORMATTERVERSION 1.0.26  
.EMAIL MICHAEL.THOMPSON@TNC.ORG  
 
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