414
FXUS62 KFFC 181058
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
658 AM EDT Fri Sep 18 2026



...New 12Z Aviation Discussion...

.KEY MESSAGES...

  - Unseasonably warm conditions will continue through the
    weekend.

  - Increased moisture from the Mid-Atlantic states will result
    in a return of showers and scattered thunderstorms through
    this weekend.

  - Marginal Risk of isolated strong to severe thunderstorms
    in the short term with strong gusty winds being the primary
    threat.



&&

.SHORT TERM...
(Today through Saturday)
Issued at 327 AM EDT Fri Sep 18 2026

Weakening high pressure with moisture slowly increasing through
the short term. Weakening Ridge/Wedge will allow moisture to
increase across the state from the NE. This will increase precip
chances Today. There is a weak backdoor cold front across the Mid
Atlantic states which pushes south today. There is a decent amount
of low to mid level moisture ahead of the front, across the
Carolinas which will move into N GA Today. Dewpoints increase
across North GA into the upper 60s to lower 70s. Combined with
temps expected in the lower to middle 90s and an axis of moderate
instability we will see isolated to scattered showers and
thunderstorms this afternoon and evening mainly across north and
portions of central GA. With low level lapse rates expected to
become fairly steep this afternoon looks like the greatest threat
from any storms that develop will be strong gusty winds.

Moisture continues to increase from the NE through Saturday
increasing precip chances across the entire area. Temps also stay
in the 90s through the short term so a similar threat of severe
storms continues into the weekend. The current general and
marginal risk areas of severe from SPC look good across the area.

&&

.LONG TERM...
(Saturday night through Thursday)
Issued at 327 AM EDT Fri Sep 18 2026

From the end of the weekend through early next week, a closed mid-
level low will remain parked over the eastern Gulf. Warm and moist
air wrapping around the low from the Atlantic will pool across the
area, supporting scattered showers and storms each day. High
temperatures will remain in the 90s, combining with dewpoints in the
70s to drive heat index values into the upper 90s to low 100s.

Confidence in the forecast drops from mid to late next week, but
model guidance has started to gradually trend towards a cooler
`wedge` pattern. This setup would involve the mid-level low being
absorbed by a trough to the north, with strong surface high pressure
sliding over the Northeast US. Low-level flow would turn out of the
northeast, bringing cooler air in along the eastern side of the
Appalachians. The latest guidance has highs falling to mid 80s
Wednesday, and upper 70s to low 80s by Friday, with only slight rain
chances. It is worth noting there are quite a few members of
guidance that either keep the mid-level low in place over the
eastern Gulf, or build a ridge back over the Southeast. Either of
these scenarios would lead to continued warm temperatures and daily
showers and storms. Over the next few days, this picture will become
much clearer.

&&

.AVIATION...
(12Z TAFS)
Issued at 623 AM EDT Fri Sep 18 2026

Clear skies this morning with light and variable winds. Will see
some Cumulus clouds developing across the area by 16z-18z with a
slight chance of SHRA/TSRA this afternoon/evening at the TAF
sites. Winds will be mainly out of the NW but with speeds expected
in the 3-7kt range could see some brief periods of NE winds this
afternoon. Winds will turn to the NE over night then to the East
Sat. Another round of showers and thunderstorms expected again Sat
afternoon.

//ATL Confidence...12Z Update...
Confidence high on all elements

01

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          97  70  94  69 /  10  20  40  60
Atlanta         96  73  95  72 /  10  20  40  50
Blairsville     90  66  88  64 /  20  10  50  40
Cartersville    97  71  96  70 /  10  10  40  40
Columbus        96  73  96  72 /   0  10  50  40
Gainesville     95  72  93  70 /  20  10  50  50
Macon           96  71  95  70 /   0  10  50  40
Rome            97  71  97  69 /  10  10  40  30
Peachtree City  96  71  95  69 /  10  20  50  60
Vidalia         93  72  93  72 /   0  10  30  40

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

SHORT TERM...01
LONG TERM....Culver
AVIATION...01