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000
FXUS62 KFFC 210558
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
158 AM EDT Mon Aug 21 2017

.PREV DISCUSSION... /Issued 1048 PM EDT Sun Aug 20 2017/

UPDATE...
Forecast remains on track this evening with no major updates
necessary. Expect most areas to remain dry on Monday with only
isolated afternoon convection. Partly cloudy skies should provide
relatively favorable eclipse-viewing conditions for most.

RW

PREV DISCUSSION... /Issued 317 PM EDT Sun Aug 20 2017/

SHORT TERM /Tonight through Monday Night/...
Weak upper ridging and a general lack of deeper moisture keeping
convection at bay this afternoon. Isolated showers over northern
Alabama and scattered showers and thunderstorms along the sea breeze
in the coastal plain may flirt with the far west and far southeast
into the early evening, but chances drop below slight by sundown.
Moisture slowly increasing and deepening through the day tomorrow
will bring some chance for isolated to scattered convection back to
the forecast area, but weak upper ridging persists, limiting chances
to around 15-30% at best. Cloud cover will also be a bit higher
across the area by tomorrow afternoon, but should remain 50% or less
most areas through the eclipse. With a lack of any focusing
mechanism, any convection that manages to develop should diminish
quickly tomorrow evening. Lapse rates and instability not impressive
tomorrow and any thunderstorms that develop should remain below
severe limits.

20

LONG TERM /Tuesday through Sunday/...
Only tweaks to the long term based on the latest guidance.

BDL

PREVIOUS DISCUSSION...
The upper ridge will dominate our forecast area into the middle of
the upcoming week with mainly diurnal showers and thunderstorms
across north and central GA. A strong trough moving across the
Great Lakes should push another front into north GA Wednesday
night into Thursday. Drying is indicated for north GA during that
time with the front continuing to push into central GA Friday and
Saturday. Low pops will remain for central Ga since the final
position of the frontal boundary in uncertain. For weeks end GFS
and ECMWF show low pressure developing east of the SC coast. For
now the main effect for us would seem to be a dry easterly flow
into much of the forecast area...except maybe some moisture
lingering into the western counties.

41

BDL

&&

.AVIATION...
06Z Update...
VFR expected through the forecast period. FEW040-060 expected to
develop 15-18Z and linger into the evening hours. Only slight
chance of showers or thunderstorms late afternoon and will leave
it out of the forecast for now. east winds through the period
will remain light, less than 4 kts overnight and in the 3-7kt
range on this afternoon.

//ATL Confidence...06Z Update...
High confidence all elements.

Atwell

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          91  72  91  73 /  20  10  20  20
Atlanta         92  74  90  74 /  20  10  20  20
Blairsville     88  65  86  67 /  20  10  30  30
Cartersville    93  70  91  73 /  10  10  20  20
Columbus        94  75  93  76 /  20  10  30  20
Gainesville     90  72  89  73 /  20   5  30  20
Macon           93  74  92  74 /  20  10  30  20
Rome            93  70  92  73 /  10   5  30  30
Peachtree City  93  71  91  73 /  20  10  20  20
Vidalia         92  75  93  74 /  30  10  30  20

&&

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

$$

SHORT TERM...
AVIATION...Atwell