Area Forecast Discussion
Issued by NWS Atlanta, GA

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000 FXUS62 KFFC 271101 AFDFFC Area Forecast Discussion National Weather Service Peachtree City GA 701 AM EDT Tue Jun 27 2017 .PREV DISCUSSION...
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/Issued 346 AM EDT Tue Jun 27 2017/ SHORT TERM /Today through Wednesday/... A surface high centered in the upper midwest will dive quickly to the southeast, eventually shifting off the Mid-Atlantic coast by late afternoon Wednesday. Meanwhile, a positively tilted trough aloft will pivot across the region today. A series of weak impulses riding the trough will cross just to our north. Given this, there might be just enough moisture and lift (thanks to orographic effects) to squeeze out some showers across the higher terrain by mid to late morning. The coverage should be fairly limited, but do expect a bit more cloud cover due to this energy. The trough will exit this afternoon with zonal flow moving overhead. This will mean clearing skies by the overnight and through much of the day Wednesday. Some models are trying to develop isolated showers and thunderstorms across the region Wednesday, but given the dry air mass in place and shallow moisture aloft (with little forcing for ascent), feel coverage would be extremely limited. However, if we do see the return flow develop with a bit more moisture aloft, then perhaps it wouldn`t be out of the question. Still anticipate pleasant temperature through the short term...still below normal. Although, we will see temperatures creeping up to near normal by Wednesday afternoon under southeasterly flow. 26 LONG TERM /Wednesday Night through Monday/... No big changes in the long term trend for this model run. Still looking at high pressure off the mid Atlantic Coast with a rapid return flow into the southeast states for Wednesday night into Thursday. Have added slight chance for far west central Ga after 06z Thursday...increasing pops area wide after 12z Thursday. Models still hinting at a weak short wave moving from the northern Gulf across GA by the end of the week. Otherwise our area remains in an unstable moist air mass through the period. An upper trough deepening over the Great Lakes and into the OH Valley over the weekend may help push a front into TN. So...likely pops look reasonable for north GA on Saturday and have stayed with that. Otherwise...mainly chance pops area wide through the period. 41
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&& .AVIATION...
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12Z 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 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. Clearing expected overnight with veering winds to the east. //ATL Confidence...12Z Update... Moderate confidence of wind shifts from NNW to NNE. High on all other elements. 26
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&& .PRELIMINARY POINT TEMPS/POPS... Athens 85 63 86 67 / 5 0 10 5 Atlanta 84 65 86 69 / 5 0 5 10 Blairsville 77 55 80 62 / 20 0 5 5 Cartersville 83 59 87 68 / 5 0 5 10 Columbus 88 68 89 72 / 5 0 10 20 Gainesville 82 62 84 67 / 10 0 10 5 Macon 88 65 89 70 / 5 0 10 10 Rome 84 59 87 68 / 5 0 5 5 Peachtree City 85 62 87 68 / 5 0 10 10 Vidalia 88 69 89 71 / 20 10 10 10 && .FFC WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SHORT TERM...26 LONG TERM....41 AVIATION...26

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