Area Forecast Discussion
Issued by NWS Atlanta, GA

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491
FXUS62 KFFC 301143
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
743 AM EDT Tue May 30 2017



.PREV DISCUSSION... /Issued 401 AM EDT Tue May 30 2017/

SHORT TERM /Today through Wednesday/...
Current radar loop shows some very light showers across the area
associated with the nearly stalled frontal boundary. This boundary
will keep increased moisture over the region and when combined with
increased diurnally driven instability we should see more isolated to
scattered showers and thunderstorms this afternoon and evening. the
models are showing a bit less instability today than yesterday with
CAPE values peaking around 1000-2000 J/kg. Any thunderstorms that do
develop should still be heavy rain producers with PWs in the 1.4 to
1.6 in range through this evening. Some thunderstorms are still
expected to be strong to severe with favorable 0-6km shear around 25
to 30 knots contributing to the severe threat. The primary threats
will again be damaging wind gusts with some marginally severe hail
and heavy rainfall.

The main frontal system stays fairly stationary through Wed evening
before pushing into into South GA Thu morning. Expect to see another
round of convective activity tomorrow but the coverage should be a
lot less.

01

LONG TERM /Wednesday Night through Monday/...
The long term continues with an unsettled pattern...with a general
west to southwest upper flow and embedded short waves. There may
be a brief dry period mainly north for Wednesday night into
Thursday as a surface front drops through the state. However
moisture returns rapidly in response to a deepening short wave in
the lower MS Valley by the end of the week. This short wave makes
little progress through the weekend and this will give us a chance
for showers and thunderstorms each day. By Monday this system
begins to pull eastward but rain chances will not diminish until
just after this forecast period.

41

&&

.AVIATION...
12Z Update...
No major changes from the 06z TAF. Mainly VFR ceilings and VSBYs
with some very light precip still across the area. Will see
SHRA/TSRA regenerate this afternoon along the frontal boundary
which has stalled across central GA. Will also see some MVFR
Ceilings and VSBYs with the SHRA/TSRA. Winds will stay out of the
W to NW at 10kt or less with some higher gust in and around the
expected convection. The precipitation should diminish by 03z.

//ATL Confidence...12Z Update...
Medium to High on all elements

01

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          81  64  85  64 /  50  40  20   5
Atlanta         79  65  83  66 /  50  40  20  10
Blairsville     78  58  79  57 /  40  30  20  10
Cartersville    80  63  83  63 /  40  40  20   5
Columbus        84  67  86  68 /  50  40  20  20
Gainesville     79  64  82  63 /  50  40  20  10
Macon           84  66  86  66 /  50  40  20  20
Rome            82  62  84  62 /  40  30  20  10
Peachtree City  80  63  83  63 /  50  40  20  10
Vidalia         89  70  88  69 /  30  30  30  20

&&

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

$$

SHORT TERM...01
LONG TERM....41
AVIATION...01



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