Spot Forecast
Issued by NWS Atlanta, GA
Issued by NWS Atlanta, GA
114
FNUS72 KFFC 300839
FWSFFC
Spot Forecast for 31A...USWFS
National Weather Service Peachtree City GA
439 AM EDT Wed Sep 30 2026
Forecast is based on ignition time of 1000 EDT on September 30.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
Good morning!
Low clouds and light fog have already begun to move in and
develop at/near the burn site this morning. Improvements are
expected shortly after sunrise. A similar set up is expected on
Thursday morning as RH recovers and winds remain light -- though
widespread fog is not anticipated at this time. Dry weather for
today and Thursday at the burn site. Very light to near calm winds
this morning will favor the east to east-southeast direction but
wind speeds will be 7 MPH or less through the day. Expect
transport winds to behave similarly. Relative humidity will start
off in the 80s around ignition time, lowering to the upper 50s to
60s by 12PM and reaching a minimum of around 35-40% by 2PM. As
moisture starts to slowly return expect relative humidity to trend
upward also.
Please let us know if you have any additional questions or
concerns.
.REST OF TODAY...
Sky/weather.........Sunny (15-25 percent).
Max temperature.....Around 90.
Min humidity........35 percent.
Dewpoint............65 decreasing to 60 late in the afternoon.
Wind (20 ft)........Light winds.
Mixing height.......6700 ft AGL.
Transport winds.....Southeast 6 to 7 mph.
Smoke dispersal.....Poor (4500 knot-ft) early in the morning
increasing to good (33900 knot-ft) in the
afternoon.
LVORI...............3.
ADI.................7 to 42.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........34 22 16 8 7 6 6 5
Weather cov.....
Weather type....
Tstm cov........
Temp............72 77 82 86 88 89 90 89
Dewpoint........66 67 66 63 62 61 60 58
RH..............82 71 58 47 42 39 37 35
20 FT wind dir..E E E E SE SE SE E
20 FT wind spd..2 2 2 2 2 3 3 2
20 FT wind gust.7 7 8 7 8 8 8 8
Mix hgt (kft)...0.9 1.6 3.6 5.0 5.9 6.3 6.7 6.4
Transp wind dir.E E SE SE SE SE SE SE
Transp wind spd.6 6 7 6 6 6 6 6
LVORI...........4 3 2 1 1 1 1 1
ADI.............7 13 28 35 40 42 42 42
Vrate kt-ft/1K..5 9 20 27 31 33 34 33
Ventrate Cat....PR PR PR PR PR PR PR PR
.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent).
Min temperature.....Around 64.
Max humidity........100 percent.
Dewpoint............61 increasing to 65 overnight.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....Southeast 6 to 9 mph.
Smoke dispersal.....Fair (25200 knot-ft) early in the evening
decreasing to poor (2100 knot-ft) late in the
night.
LVORI...............5.
ADI.................3 to 34.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........3 10 16 15 13 4 4 3 4 8 14 22
Weather cov.....
Weather type....
Tstm cov........
Temp............88 84 78 74 73 71 70 69 68 67 66 66
Dewpoint........59 61 61 62 63 63 64 65 66 66 66 66
RH..............39 45 56 64 71 76 81 87 93 97 99 100
20 FT wind dir..E E E E E E SE SE SE SE SE SE
20 FT wind spd..2 2 2 2 3 3 3 3 2 2 2 1
20 FT wind gust.7 7 7 8 9 10 10 9 8 8 7 6
Mix hgt (kft)...4.6 0.8 0.4 0.4 0.5 0.5 0.5 0.5 0.4 0.4 0.4 0.4
Transp wind dir.SE SE E E SE E SE SE SE SE SE SE
Transp wind spd.6 6 7 8 9 9 9 9 8 8 7 7
LVORI...........1 2 3 3 3 4 5 6 6 8 9 9
ADI.............34 3 3 4 4 4 4 4 4 4 3 3
Vrate kt-ft/1K..25 4 2 3 4 4 4 4 3 3 2 2
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
.THURSDAY...
Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 90.
Min humidity........44 percent.
Dewpoint............67 increasing to 68 in the late morning and
afternoon, then decreasing to 64 late in the
afternoon.
Wind (20 ft)........Light winds.
Mixing height.......5900 ft AGL.
Transport winds.....Southeast 6 to 8 mph.
Smoke dispersal.....Poor (2000 knot-ft) early in the morning
increasing to good (39000 knot-ft) in the
afternoon.
LVORI...............5.
ADI.................3 early in the morning increasing to 50 in the
afternoon.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30 40 45 44 43 42 38 30 21 12 10 12
Weather cov.....
Weather type....
Tstm cov........
Temp............66 66 66 69 75 80 83 86 88 89 89 89
Dewpoint........65 65 66 69 70 70 69 68 66 66 66 64
RH..............99 99 100 100 84 72 63 54 49 47 46 44
20 FT wind dir..E E E E SE SE SE SE SE SE SE SE
20 FT wind spd..1 1 1 1 2 3 3 3 3 3 3 3
20 FT wind gust.5 5 5 5 6 8 8 9 9 9 9 9
Mix hgt (kft)...0.5 0.5 0.4 1.0 1.7 2.9 3.8 4.3 4.9 5.9 5.9 5.3
Transp wind dir.SE SE SE SE SE SE SE E SE SE SE SE
Transp wind spd.6 6 6 6 6 7 7 7 7 8 7 8
LVORI...........9 9 9 8 4 3 1 1 1 1 1 1
ADI.............3 5 5 8 14 25 31 33 40 50 48 48
Vrate kt-ft/1K..3 2 2 5 9 18 23 25 30 39 38 36
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
$$
Forecaster...Wyatt
Requested by...Nathan Herron
Type of request...PRESCRIBED
.TAG 2622768.0/FFC
.DELDT 09/30/26
.FormatterVersion 2.0.0
.EMAIL nathanherron1615@gmail.com,matthew_smith@fws.gov,nathan_herron@fws.gov