Area Forecast Discussion
Issued by NWS Atlanta, GA

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FXUS62 KFFC 270536
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
136 AM EDT Tue Jun 27 2017



.PREV DISCUSSION... /Issued 737 PM EDT Mon Jun 26 2017/

PREV DISCUSSION... /Issued 316 PM EDT Mon Jun 26 2017/

SHORT TERM /Tonight through Tuesday Night/...
Much drier and cooler air mass remains has settled over the area as
high pressure dominates. Expect building cirrus overnight tonight
into Tuesday as a series of upper level impulses traverse an
approaching upper level trough. Even with the trough, little
convective development is expected due to the abnormally dry high
pressure at the surface. Have continued with slight chance pops over
the north Georgia mountains where orographic influence could supply
enough lift for some showers to develop. Additionally, have
continued slight chance pops over the far SE CWA where a convergence
zone will combine with diurnal heating to produce isolated
convection. Regardless, expect any activity to be sub-severe.

Have opted for a blend of guidance for temperatures through the
short term period.

31

LONG TERM /Wednesday through Monday/...
No major changes to the long term. The quick return of tropical
air still looks on target for the latter half of this week.
Previous long term discussion follows...

17

LONG TERM /Tuesday Night through Sunday/...
A dry air mass is in place at the start of the period with a
surface ridge centered over the Appalachians. The ridge gradually
moves east...and by Thursday the return flow is bringing moisture
back into the state. Models continue to hint at a weak short wave
in the northern Gulf by the weekend...and also a front approaching
from the OH Valley toward the end of the period. In general we
remain in a tropical air mass from Thursday and beyond and chance
pops for most areas each day look reasonable.

41

&&

.AVIATION...
06Z Update...
VFR conditions expected through the TAF period as surface high
pressure dominates the sensible weather. The biggest challenges
are the wind shifts for the metro TAF sites. Based on the latest
high res. guidance, surface obs and VAD wind profile, we will
likely see more NNW winds than NNE. So, have decided to keep the
winds out of the NNW through much of the overnight and through the
day. It does appear that with the high pressure shifting east and
an upper level impulse exiting, that we should see winds
eventually shift to the NNE during the evening. Winds may pick up
a bit during the afternoon, possibly gusting to around 15kts.
Meanwhile, cirrus will continue to stream across the region
through late afternoon. Anticipate some diurnal CU to develop.

//ATL Confidence...06Z Update...
Low to Moderate confidence of wind shifts from NNW to NNE.

26

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          85  62  87  67 /  10   5   5   5
Atlanta         84  65  87  69 /  10   5   5   5
Blairsville     77  55  81  62 /  20   5   5   5
Cartersville    83  61  88  68 /   5   5   0  10
Columbus        88  68  90  72 /  10   5  10   5
Gainesville     82  62  85  67 /  10   5   0   5
Macon           88  66  90  70 /  10   5   5   5
Rome            83  60  88  68 /   5   5   0   5
Peachtree City  85  63  88  68 /  10   5   5   5
Vidalia         88  69  90  71 /  20  20   5   5

&&

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

$$

SHORT TERM...01
LONG TERM....NListemaa
AVIATION...26


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