961
FXUS62 KFFC 260627
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
127 AM EST Sun Jan 26 2025

...New 06Z Aviation Discussion...

.SHORT TERM...
(This afternoon through Sunday)
Issued at 234 PM EST Sat Jan 25 2025

At a glance:

- A warming trend will start today.

- A weak system tomorrow will bring some rain to central GA.

The worst of the cold is over. For now. Upper level flow is set to
become zonal today and into tomorrow with high pressure setting up
just off the coast. This will help to push off the cold air that
we`ve been dealing with the past week as SW flow injects the moisture
into the area. Daytime highs T`s today and tomorrow will be in the
upper 40s and 50s. Overnight lows tonight will dip below freezing one
final time for the foreseeable forecast.

The warming trend should last into next week, but with it comes a
brief shot of rain as a weak impulse shudders through the upper
levels. Rain will move in tomorrow night after 7pm and continue
through the overnight hours. By late afternoon Monday, the system
will have pushed off to the east. Given how dry conditions are right
now and going into tomorrow, rainfall totals are expected to be less
than a quarter of an inch, although some locally higher totals are
possible along the border with AL.

Vaughn

&&

.LONG TERM...
(Monday morning through next Friday)
Issued at 234 PM EST Sat Jan 25 2025

Key Messages:

- Mild temperatures will be the rule.

- A somewhat nebulous mid-/upper-level pattern will be the
  driver of rain chances.

Forecast:

After a dry and mild Tuesday, the first opportunity for rain showers
in the long term period looks to be Wednesday. A murky mid-
/upper-level pattern will be in place across the Southeast, as
ensemble guidance and cluster analysis indicate a broad trough over
the eastern half of the CONUS -- with the Southeast at the base of
this trough, where the flow will be more quasi-zonal -- while a cut-
off low spins over the Desert Southwest. The impetus for rain
showers will be a shortwave trough -- a feature that can be
difficult for global models to resolve a few days out. For the sake
of forecast continuity, have capped PoPs at ~40% on Wednesday. The
potential for thunder is still near-zero, as instability will likely
not be realized due to unimpressive thermodynamics and kinematics.

Ensemble spread is decently high regarding the evolution of the
aforementioned mid-/upper-level features at the end of the week --
specifically the cut-off low, as far as impacts go across north and
central Georgia. Cut-off lows are somewhat nebulous features and
drift along with the environmental flow, and as such are another
somewhat difficult feature for global models to depict. Ensemble
means paint a general picture of the cut-off low over the Four
Corners late Thursday night/early Friday morning, with it meandering
east-northeast over the central/southern Great Plains Friday
night/early Saturday morning and becoming an open wave. The
amplitude of this wave and the degree to which it interacts with
subtropical moisture will determine how rain showers play out
(timing, coverage, intensity) on Friday and Saturday. The overall
synoptic pattern, as it stands now, supports chance PoPs (30% to
50%).  It is possible (currently less than a 20% chance) that some
frozen precip could mix with rain showers in the mountains on Friday
morning. Impacts are not expected at this time.

Glancing blows from the mid-/upper-level waves will promote mild
temperatures, as a lack of true cold front passages will keep cold
air with Canadian/Arctic origins well to our north.

Martin

&&

.AVIATION...
(06Z TAFS)
Issued at 101 AM EST Sun Jan 26 2025

VFR to start TAF period. Any cloud cover is expected to remain VFR
through today, before cigs begin to lower Sunday night into Monday
morning. Winds will be 4-7 kts from the west through period. Rain
showers move in after 00Z on Monday alongside lower MVFR to IFR
cigs.

//ATL Confidence...06Z Update...

High all elements.

Lusk

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          54  38  51  35 /   0  80  50  10
Atlanta         53  39  51  35 /   0  90  60  10
Blairsville     48  32  49  29 /   0  70  30   0
Cartersville    51  36  51  32 /   0  90  30   0
Columbus        58  41  53  38 /   0  80  80  10
Gainesville     52  38  51  35 /   0  80  40   0
Macon           58  39  53  38 /   0  70  80  10
Rome            50  35  51  30 /   0  80  30   0
Peachtree City  55  39  51  35 /   0  90  70  10
Vidalia         59  40  56  43 /   0  30  60  10

&&

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

$$

SHORT TERM...Vaughn
LONG TERM....Martin
AVIATION...Lusk