Area Forecast Discussion
Issued by NWS Atlanta, GA

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FXUS62 KFFC 122351
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
651 PM EST Tue Dec 12 2017



.UPDATE...
Northwest winds remain elevated/gusty this evening as a deep
trough pivots into New England. At the surface, the cold front has
exited off the southeast coast with high pressure building into
the region from the west. The tight pressure gradient between the
departing front and incoming high does not relax until we get
into the early morning hours Wednesday. So current thinking is
that Wind Advisory timing should be good through 10pm. We will
continue to monitor the winds, but still seeing some sustained
20mph across north Georgia. Temperatures are forecast to drop into
the teens across far NE Georgia to the mid/upper 20s elsewhere.
Add wind and this will lead to wind chills in the the single
digits up in the higher elevations to upper teens/low 20s by
sunrise. Be sure to bundle up tomorrow morning!

26

&&

.PREV DISCUSSION... /Issued 239 PM EST Tue Dec 12 2017/

SHORT TERM /Tonight through Wednesday Night/...
Short term forecast relatively benign. Cold front moving through the
state will bring drier and cooler air to the state into late week.
Increased cloud cover this afternoon is already starting to
dissipate over north Georgia as the front makes forward progress.
Tight pressure gradient is producing high winds, and Wind Advisory
remains in effect until 10 PM tonight. Expect wind speeds to
diminish somewhat overnight, and more significantly Wednesday as the
gradient relaxes. Temperatures will make a return to the 20s
Wednesday morning, with highs in the 40s to low 50s. A gradual warm
up is expected into the long term, with lows on Thursday in the 30s.

31

LONG TERM /Thursday through Tuesday/...
A dry cold front will move slowly south across the CWFA during the
day on Thursday, and finally push into the Florida panhandle by late
Friday. High pressure will briefly build in for Saturday, but the
high center should move offshore by early Sunday as a low pressure
center from the western GOM moves onshore. Abundant moisture is
expected just ahead of the system, and rain chances should begin to
increase late Sunday into Monday. There are still some differences
in the models, but the ECMWF and GFS both show high PoPs across the
NW corner of the CWFA by Sunday night.

No major changes to most elements within the long term forecast
period. However, did bump pops up Sunday night into Monday.

NListemaa

&&

.AVIATION...
00Z Update...
VFR conditions expected through the TAF period as high pressure
controls the sensible weather. Gusty NW flow (10-15kts) will
continue through the next several hours, eventually relaxing by
early Wednesday morning. Clear skies through the overnight with
some high clouds sweeping through during mid-morning. With a bit
of mixing during the afternoon, would not be surprised to see some
gusts around 15-18kts briefly. Winds will back to SW as the high
shifts further into the GOM during the afternoon.


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

26

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          26  47  35  55 /   0   0   0   0
Atlanta         27  46  36  54 /   0   0   0   0
Blairsville     19  42  29  46 /   0   0   0   5
Cartersville    24  46  33  50 /   0   0   0   5
Columbus        30  51  37  59 /   0   0   0   0
Gainesville     26  44  35  51 /   0   0   0   0
Macon           28  51  35  59 /   0   0   0   0
Rome            25  47  33  50 /   0   0   0   5
Peachtree City  26  48  34  56 /   0   0   0   0
Vidalia         31  51  37  61 /   0   0   0   0

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 10 PM EST this evening for the following
zones: Banks...Barrow...Bartow...Carroll...Catoosa...Chattooga...
Cherokee...Clarke...Clayton...Cobb...Coweta...Dade...Dawson...
DeKalb...Douglas...Fannin...Fayette...Floyd...Forsyth...Gilmer...
Gordon...Gwinnett...Hall...Haralson...Heard...Henry...Jackson...
Lumpkin...Madison...Murray...Newton...North Fulton...Oconee...
Paulding...Pickens...Polk...Rockdale...South Fulton...Towns...
Union...Walker...Walton...White...Whitfield.

&&

$$

SHORT TERM...31
LONG TERM....NListemaa
AVIATION...26



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