Area Forecast Discussion
Issued by NWS Atlanta, GA

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FXUS62 KFFC 251139
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
739 AM EDT Tue Jul 25 2017



.PREV DISCUSSION... /Issued 422 AM EDT Tue Jul 25 2017/

SHORT TERM /Today through Wednesday/...

Conditions early this morning are quiet and dry across the CWA after
widespread Monday evening showers and thunderstorms have dissipated.
A weak surface trough extending through central Georgia will again
serve as a catalyst for convection today. Additionally, a weak
disturbance currently over Alabama resulting from earlier convection
will push into central Georgia and further enhance thunderstorm
development. Showers could begin to redevelop as early as this
morning in the vicinity of this disturbance with coverage increasing
more appreciably by the afternoon. The highest PoPs today will
extend through central Georgia in the vicinity of these
aforementioned features with lower coverage expected for north
Georgia. As has been the case, a few thunderstorms could become
briefly strong or severe during peak afternoon/evening heating with
locally damaging wind gusts and heavy rainfall being the primary
concerns.

Shower and thunderstorm coverage will gradually diminish after
sunset and taper overnight. Wednesday will bring a similar forecast
of diurnal convection. As the surface boundary slips a bit farther
south, the focus for the highest shower and thunderstorm coverage
will again be across central Georgia with less coverage farther
north and west.

Due to the expected higher concentration of rain and clouds in
central Georgia today, high temperatures will actually be hotter in
north Georgia where low 90s are forecast as compared to mid to upper
80s in central Georgia.

RW

LONG TERM /Wednesday Night through Monday/...

A surface boundary will extend across central GA at the start of
the long term. This would separate somewhat drier air over north
GA from deeper moisture central. However...not expecting the air
mass to become dry enough to remove pops for any length of time. A
strong short wave dropping from the Great Lakes to the mid
Atlantic states should push a another front to the TN Valley on
Friday. Likely pops still look okay for far north GA for that
time...with chance pops elsewhere. The front should continue to
push into central GA as the broad eastern trough deepens over the
weekend. For the first of the week...the southeast is dominated by
a deep upper trough for this time of year. Cyclonic flow over the
southeast will keep chance pops in through the period and
temperatures not as hot as previous days.

41

&&

.AVIATION...
12Z Update...
VFR ceilings/visibilities prevail at most TAF sites this morning
with some scattered areas of patchy MVFR or occasional IFR
ceilings/vsbys, especially in vicinity of CSG. Otherwise,
primarily mid- and high-level clouds are predominant. A
disturbance over eastern Alabama is supporting shra/tsra
development this morning. Overall convective coverage will expand
through the afternoon, with highest coverage in central GA, though
some scattered activity is expected farther north. Winds will
remain from the west today but will shift toward the northeast by
sunrise Wednesday at ATL/AHN area sites.

//ATL Confidence...12Z Update...
Low confidence on MVFR/IFR ceiling extent this morning.
High confidence on other elements.

RW

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          92  72  91  72 /  40  30  30  30
Atlanta         90  74  91  74 /  40  20  30  30
Blairsville     89  66  86  67 /  30  20  30  20
Cartersville    92  71  92  72 /  40  20  30  20
Columbus        88  74  92  75 /  70  40  40  20
Gainesville     90  72  89  72 /  30  20  30  30
Macon           89  72  91  73 /  60  40  40  30
Rome            93  72  93  73 /  30  20  20  20
Peachtree City  89  71  91  72 /  50  30  40  30
Vidalia         89  74  88  73 /  70  50  60  40

&&

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

$$

SHORT TERM...RW
AVIATION...RW



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