201 FXUS62 KFFC 271024 AFDFFCArea Forecast Discussion National Weather Service Peachtree City GA 624 AM EDT Sat Sep 27 2025
...New 12Z Aviation Discussion...
.KEY MESSAGES... Updated at 600 AM EDT Sat Sep 27 2025
- Scattered showers and thunderstorms around today, with the highest coverage over northeast and east-central GA.
- Tropical forecast remains very uncertain through mid to late week, impacts would be minimal with the current forecast.
- Temps in the 70s to low 80s and breezy winds each afternoon lead to fall like conditions.
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.SHORT TERM... (Today through Sunday) Issued at 155 AM EDT Sat Sep 27 2025
A nearly stationary cold front remains draped across far western GA early this morning, with occasional showers kicking off along it. This front will finally start to push across north and central GA today as a mid-level low over the TN Valley lifts off to the northeast. Shower and thunderstorm activity today will generally be confined to areas along and ahead of the front, with the best chances being this afternoon and evening across the eastern half of the state. Severe weather is not anticipated, but a few storms may be strong with gusty winds, frequent lightning, and heavy rain. High temps will be around normal today, climbing into the low to mid 80s.
Convective activity will rapidly drop off late this evening and overnight on the backside of the front as the mid-level low pulls away and a much drier airmass spreads over the region. This will lead to a very pleasant Sunday with dry conditions, mostly sunny skies, and high temperatures again in the low to mid 80s. Winds may be a bit breezy out of the east-northeast during the afternoon as surface high pressure builds to the north.
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.LONG TERM... (Sunday night through Friday) Issued at 155 AM EDT Sat Sep 27 2025
The main story of the longterm continues to be the tropical activity in the western Atlantic. Humberto has strengthened into a Category 4 storm but with the strong high pressure over the Atlantic and the deep positively tilted trough over a majority of the southern CONUS, Humberto is expected to curve northeastward into the Atlantic where it will stay away from the eastern seaboard. NHC designated PTC 9 as of the 4pm advisory cycle and with the current forecast is expected to become TS Imelda this weekend. Model guidance is in agreement that PTC9 (future Imelda) will track north-northwestward through Monday before models turn a bit more varied with their solutions. Latest solutions shows almost three different possible routes with this system but overall NHC is leaning more towards the system stalling out over the SC coastline potentially into mid to late week before choosing the next path. What this means for us is the likelihood for impacts in north and central Georgia have decreased over early next week (although they were pretty minimal to begin with). We`ll see where the models track over the next few runs to see the overall setup into the end of the week. Northeast/east Georgia will be the place to watch more as certainty increases over the next day or so for potential impacts if Imelda were to push inland although latest models have tended in the direction of the storms stalling out and/or pushing out east into the Atlantic. Regardless it doesn`t hurt to review any plans you have and as always stay tuned to the NHC forecast as well as ours.
Other than the tropical system activity temperatures looks to moderate and give a nice taste of fall into the early week with the upper level pattern supporting cooler and drier conditions as we are wedged in between the synoptic flow of the cutoff low and Imelda. Highs in the mid 70s to low 80s can be expected through the long term with lows approaching the lower 60s to upper 50s. Wind gusts will also remain elevated through much of the long term beginning this weekend into early next week as the pressure gradient between the upper level cutoff low and the tropical system set up over the area. Gusts through next week remain in the 15-20mph range most afternoons with up to 25mph possible over the southeastern and eastern counties. If the storm tracks closer to the coast we could see these values approach wind gust criteria into the weekend with the higher end gusts showing up to 35mph gusts possible. Still too soon to see at this point though but keep that in mind for the week!
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.AVIATION... (12Z TAFS) Issued at 600 AM EDT Sat Sep 27 2025
A frontal boundary remains just west of a line from CSG to FTY, with ISO SHRA and MVFR or lower CIGs and VIS along it. Areas of IFR CIGs ongoing this morning will gradually improve by mid to late morning. VFR conditions expected the rest of the 12Z TAF period outside of potential ISO SHRA/TSRA this afternoon. Light and VRB winds this morning will turn NW around 5-7kts as the front moves through the ATL area during the day. Winds then turn out of the E-NE late tonight into Sun AM.
//ATL Confidence...12Z Update...
Low confidence in CIGs this morning. Medium confidence in all other elements.
Culver
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.PRELIMINARY POINT TEMPS/POPS... Athens 81 63 81 66 / 40 10 10 20 Atlanta 83 65 84 67 / 20 10 10 10 Blairsville 76 58 79 59 / 50 10 20 10 Cartersville 84 62 86 65 / 20 10 10 10 Columbus 86 65 87 67 / 20 0 10 0 Gainesville 81 63 82 66 / 40 10 10 10 Macon 84 65 84 67 / 30 10 10 10 Rome 86 63 87 66 / 20 10 10 0 Peachtree City 84 63 84 65 / 20 10 10 10 Vidalia 84 67 87 69 / 50 10 20 20
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.FFC WATCHES/WARNINGS/ADVISORIES... None. &&
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SHORT TERM...Culver LONG TERM....Hernandez AVIATION...Culver
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