Area Forecast Discussion
Issued by NWS Atlanta, GA

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670
FXUS62 KFFC 192343
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
743 PM EDT Thu Oct 19 2017



.PREV DISCUSSION... /Issued 316 PM EDT Thu Oct 19 2017/

SHORT TERM /Tonight through Friday Night/...

Quiet fcst continues on with ridge in control of regime and
prevailing dry/mostly clear conditions. While center of sfc high is
close to north GA, our resultant winds should be light and variable
to calm overnight. Radiational cooling should be strong but not
result in as low of morning temps (staying in 40s for most areas).

Friday should have some amplifying upper ridging that translates the
sfc high a bit farther northeast, so while winds tomorrow should
still be light, they should have more of a east component. Highs
should moderate to about 5 deg above climo, with most areas in the
upper 70s to near 80.

Baker

LONG TERM /Saturday through Thursday/...

High pressure ridging will continue to influence the forecast area
to begin the extended period, which will lead to the continuation of
benign and seasonal conditions. Cloud coverage will begin to increase
on Saturday as the upper level ridge moves off to the east and is
replaced by upper level southwesterly flow. More moisture is then
expected in the area on Sunday due to return flow off the Gulf of
Mexico, which will lead to an increase in PoPs, in the 20 to 30
percent range in the afternoon.

Medium-range models are then fairly consistent in regards to the
passage of a cold frontal system through the forecast area early
next week. Widespread heavy rain, with PoPs in the 60 to 80
percent range, and the potential for at least isolated strong to
severe thunderstorms can be expected ahead of this front. It is
most likely that these conditions will be observed on on Monday
night and into Tuesday. However, model inconsistencies still exist
concerning the orientation, timing, and strength of this system.
Strong cold air advection associated with another shortwave, along
with the cooler air already in place behind the passage of the
front, could contribute to significantly below normal temperatures
to the area in the later parts of the week.

King

&&

.AVIATION...
00Z Update...
VFR skies and visibilities will continue through the period. Skies
will remain largely clear. Winds overnight will be near calm with
light ENE winds at 5 knots or less expected on Friday.

//ATL Confidence...00Z Update...
High confidence on all elements.

RW

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          47  79  50  79 /   0   0   0   0
Atlanta         50  78  54  77 /   0   0   0   0
Blairsville     41  77  46  74 /   0   0   0   0
Cartersville    44  78  50  77 /   0   0   0   0
Columbus        52  80  57  81 /   0   0   0   0
Gainesville     49  77  52  76 /   0   0   0   0
Macon           47  81  52  82 /   0   0   0   0
Rome            42  78  49  78 /   0   0   0   0
Peachtree City  44  78  49  79 /   0   0   0   0
Vidalia         54  82  57  83 /   0   0   0   5

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...RW
LONG TERM....41
AVIATION...RW



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