Lithonia, Georgia Weather Forecast Discussion

691
FXUS62 KFFC 271750
AFDFFC
Area Forecast Discussion
National Weather Service Peachtree City GA
150 PM EDT Sat Sep 27 2025
...Afternoon Area Forecast Discussion...
.KEY MESSAGES...
Updated at 147 PM EDT Sat Sep 27 2025
- Dry air will move in behind the cold front.
- Thunderstorms will be confined to the eastern portions of the
  CWA.
- Scattered showers and thunderstorms possible through much of the
weekend.
- Temperatures more seasonable tomorrow onward.
- High uncertainty in forecast beyond Sunday.
&&
.SHORT TERM...
(This afternoon through Sunday)
Issued at 147 PM EDT Sat Sep 27 2025
The front has essentially stalled right over the ATL metro area.
While a few areas behind the front have shown some light returns,
lightning activity has been confined to areas east of GA-400/I-75.
By tomorrow the front will push off to the NE brining cooler and
dryer weather to the CWA.
Temps today will range from the low to mid 80s with cooler
temperatures overnight then we`ve seen over the past few days. This
trend will continue tomorrow and into the early part of the week as
high pressure and dry air settle in.
&&
.LONG TERM...
(Monday morning through next Friday)
Issued at 147 PM EDT Sat Sep 27 2025
Current reflectivity and satellite shows increased convection across
central Georgia, initializing earlier and with more coverage than
models indicate. Current sfc analysis shows two regions of tighter
temp gradients which are reflected in the double line of showers and
thunderstorms near MCN and CSG stretching southwest respectively.
The CU field continues to become more disturbed across the metro and
northern Georgia, however persistent cloud coverage has inhibited
daytime heating somewhat. Current convection appears to require at
least 1500+ J/Kg of MLCAPE to begin producing (see north Georgia
precip and central GA thunderstorms). Convection is likely to begin
across the I20 corridor shortly, however convection to the south may
eat up much of the northward transport of energy. Not totally buying
CAMs attempt at the development of a tertiary line developing in
eastern AL beyond 23Z. Overall, confidence in the exact coverage and
intensity of precip in the metro is low given the current
compounding factors. The good news overall is that severe potential
has decreased as convective potential has separated from much of the
bulk shear support. Still could see a few strong thunderstorms in
areas with MUCAPE >2000J/Kg.
Going into the overnight hours, calm mostly calm and moist
conditions will mean a risk of patchy fog across much of the area.
Limiting factor with this will be patchy showers which may last
through the overnight hours. Total precipitation in central Georgia
through Friday is relatively unimpressive given the spotty coverage.
Some will get lucky with QPF of around 1" while others may get just
over 0.25".
The good news overall is that with increased cloud cover and the
passing cold front, temperatures tomorrow will be more seasonable
with highs in the mid to low 80s. The far southeast regions of the
CWA may not be so luck with the front progression and highs may
still reach the upper 80s. Thunderstorm potential returns Friday
afternoon, mostly in central Georgia, due to further frontogenesis
around the base of the low as it moves over the north GA mountains.
No severe weather is anticipated with this, however a few rumbles of
thunder may be possible.
&&
.AVIATION...
(18Z TAFS)
Issued at 138 PM EDT Sat Sep 27 2025
A few lingering SHRA are possible this afternoon but TSRA will be
most likely for AHN and MCN which hasn`t cleared the warm sector of
the front. CIGS will continue to improve through the afternoon
before eventually becoming VFR after 18Z. NW winds will eventually
become NE after 01Z.
//ATL Confidence...18Z Update...
High on all elements.
Vaughn
&&
.PRELIMINARY POINT TEMPS/POPS...
Athens          63  81  66  77 /  10  10  20  30
Atlanta         65  84  67  81 /  10  10  10  20
Blairsville     58  79  59  77 /  10  20  10  40
Cartersville    62  86  65  84 /  10  10  10  20
Columbus        65  87  67  85 /   0  10   0  20
Gainesville     63  82  66  79 /  10  10  10  30
Macon           65  84  67  80 /  10  10  10  20
Rome            63  87  66  86 /  10  10   0  20
Peachtree City  63  84  65  82 /  10  10  10  20
Vidalia         67  87  69  81 /  10  20  20  40
&&
.FFC WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
SHORT TERM...Vaughn
LONG TERM....SM
AVIATION...Vaughn

NWS FFC Office Area Forecast Discussion