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NWS Area Forecast Discussion
AFD issued by the Atlanta/Peachtree City, GA NWS forecast office.
AFD issued by the Atlanta/Peachtree City, GA NWS forecast office.
000 FXUS62 KFFC 211908 AFDFFC Area Forecast Discussion National Weather Service Peachtree City GA 308 PM EDT Sun Oct 21 2018 .SHORT TERM /Tonight through Monday Night/... Very dry and cool airmass has settled in across the Southeast region with temperatures ranging from the lower 50s across north GA to the mid 60s far south areas (Americus to Vidalia). These temperatures are running about 10-15F degrees below normal for mid-late October. In case you were wondering, this is only the third time since August 25th we (ATL) has officially seen below normal temps for a 24-hour period. Clear skies, light winds and a dry airmass will allow temps to drop rapidly after sunset this evening. Widespread 30s will result in areas of frost (dewpoint depressions will be < 5F). Hence, will issue a Frost Advisory between 2AM and 8AM for much of the area except the far southern counties where min temps will generally be in the lower 40s. A Freeze Warning remains in effect for Towns and Union counties where slightly colder temps are expected near the TN border. Dry conditions will continue into Monday and Monday night but a gradual return (E-SE) flow will allow for an increase in low-lvl moisture/clouds. With the shift in wind direction, a gradual warming trend to more seasonal levels will occur as well. DJN.83 && .LONG TERM /Tuesday through Sunday/... Quiet start to the long term period with nearly zonal flow in place, continuing dry weather across the area until around Thursday. Meanwhile, a surface low is expected to develop to our west over the Gulf and Gulf states this week and will traverse east before affecting our area on what looks to be at least Thursday through Friday. Models are still showing some differences as to timing and location of the low, with the GFS keeping the low further south of our area and pushing moisture into the area SW GA faster than the ECMWF. Decided to go with a model blend bringing slight chance and chance pops across the SW on Thursday and spreading across the rest of the area on Friday. After that, a strong low pushes into the region, spreading moisture back across northern portions of the area late Saturday through Sunday. High temperatures for Tuesday and Wednesday are in the 60s and 70s, with temperatures in the 50s and 60s expected through the rest of the expended. Low temperatures are generally in the 40s and 50s through the extended. Reaves && .AVIATION... 18Z Update... VFR conditions will prevail through the next 24-30 hours. Winds have already gone N/NE so look for that trend (to the east) to continue through Monday as sfc high becomes centered over the Carolinas by morning. //ATL Confidence...18Z Update... High all elements. DJN.83 && .PRELIMINARY POINT TEMPS/POPS... Athens 38 68 46 71 / 0 0 0 0 Atlanta 41 66 48 69 / 0 0 0 0 Blairsville 33 63 39 65 / 0 0 0 0 Cartersville 35 66 43 69 / 0 0 0 0 Columbus 41 70 52 72 / 0 0 5 0 Gainesville 39 65 45 69 / 0 0 0 0 Macon 35 69 50 72 / 0 0 5 5 Rome 34 66 43 69 / 0 0 0 0 Peachtree City 34 67 46 70 / 0 0 0 0 Vidalia 42 72 55 73 / 0 0 5 5 && .FFC WATCHES/WARNINGS/ADVISORIES... Frost Advisory from 2 AM to 8 AM EDT Monday for the following zones: Baldwin...Banks...Barrow...Bartow...Butts...Carroll... Catoosa...Chattooga...Cherokee...Clarke...Clayton...Cobb... Coweta...Dade...Dawson...DeKalb...Douglas...Fannin...Fayette... Floyd...Forsyth...Gilmer...Glascock...Gordon...Greene... Gwinnett...Hall...Hancock...Haralson...Heard...Henry...Jackson... Jasper...Jefferson...Jones...Lamar...Lumpkin...Madison... Meriwether...Monroe...Morgan...Murray...Newton...North Fulton... Oconee...Oglethorpe...Paulding...Pickens...Pike...Polk... Putnam...Rockdale...South Fulton...Spalding...Taliaferro... Troup...Upson...Walker...Walton...Warren...Washington...White... Whitfield...Wilkes. Freeze Warning from midnight tonight to 8 AM EDT Monday for the following zones: Towns...Union. && $$ SHORT TERM...DJN.83 LONG TERM....Reaves AVIATION...DJN.83
