Area Forecast Discussion
Issued by NWS Atlanta, GA

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FXUS62 KFFC 090533
AFDFFC

Area Forecast Discussion...Updated Aviation
National Weather Service Peachtree City GA
1233 AM EST Fri Dec 9 2016

.Update...
/Issued at 955 PM EST Thu Dec 8 2016/
No changes planned for the forecast.

41

.Previous...
.SHORT TERM /Tonight through Friday Night/...
High pressure will continue to build in across the CWFA through
tomorrow. Cold air advection will usher in some of the coldest air
we have seen this season.

Copious mid and high level cloudiness will continue through early
tomorrow. These clouds will combine with 5mph to 10mph winds
overnight to hinder excellent radiational cooling. Have bumped up
the MinT values for tonight a few degrees.

The clouds should clear out by tomorrow afternoon, and the winds
should diminish to 5mph or less. This will lead to really good
radiational cooling conditions...and the lowest temps of the season
are expected Saturday morning.

NListemaa


.LONG TERM /Saturday through Thursday/...
Mainly only tweaks to the long term based on the latest guidance.
There is a trend to warmer and more moist this model run.

BDL

PREVIOUS DISCUSSION...
Medium range models continue to remain fairly similar with respect to
the large scale, progressive pattern, however significant differences
continue as well concerning the timing and amplitude of the smaller
scale features. Timing of the late weekend system remains essential
the same as recent model runs. Precipitation moves in late in the day
Sunday into the overnight period. The GFS is trending drier than the
ECMWF over the past few model cycles. Mid-week system showing even
bigger discrepancies between the two models with the GFS being the
wetter of the two systems this time. All-in-all, given these trends,
I have kept my extended forecast grids basically a blend for now.

20

&&

.AVIATION...
06Z Update...
VFR conditions will prevail through the taf period as a cold dome of
high pressure settles across the area through Saturday. May see a
few high clouds streaming across... but otherwise mainly a wind
forecast. NNW winds around 10-12kts will prevail today with ocnl
slightly higher gusts by late this morning. NNW winds diminish this
evening to around 4-6kts... then winds back back to the NE by late
Sat morning as the surface ridge slips east.

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

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          28  45  25  48 /   0   0   0   0
Atlanta         27  41  25  48 /   0   0   0   0
Blairsville     21  36  18  44 /   0   0   0   0
Cartersville    25  40  22  47 /   0   0   0   0
Columbus        31  47  27  51 /   0   0   0   0
Gainesville     27  42  25  46 /   0   0   0   0
Macon           30  47  24  51 /   0   0   0   0
Rome            25  41  21  47 /   0   0   0   0
Peachtree City  26  43  22  49 /   0   0   0   0
Vidalia         36  49  30  53 /   0   0   0   0

&&

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

$$

SHORT TERM...41/39
LONG TERM....BDL
AVIATION...39



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