Area Forecast Discussion
Issued by NWS
Issued by NWS
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200 FXUS62 KTAE 070925 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 425 AM EST Thu Nov 7 2024 ...New NEAR TERM, SHORT TERM, LONG TERM, AVIATION, MARINE, FIRE WEATHER, HYDROLOGY... .NEAR TERM... (Today and tonight) Issued at 322 AM EST Thu Nov 7 2024 The air mass will remain richly and unseasonably moist through tonight, with low-level southeast flow continuing to reinforce surface dewpoints in the lower 70s and PW values in excess of 2 inches. There will not be as much lift today to act on the extremely moist air mass. The right entrance region of a jet streak that aided lift yesterday is now moving northeast through the Carolinas. The surface-based inverted trough will lose definition and wash out. So we will be more and more reliant on puny November thermal lift to bubble of some showers through the day. Given how moist the air mass is, the heaviest thunderstorms could produce 2 to 3+ inches of rain beneath slow-moving cores. Given the sensitivity to additional rain today over south-central Georgia, have kept the Flood Watch going there today, while canceling it early further west. By this evening, the 500 mb high that got sidelined off to the east yesterday will build a ridge back westward across the forecast area. The first signs of a little mid-level drying will arrive, as well as some subsidence beneath the returning ridge. Therefore, rain chances will taper off tonight. The boundary layer will remain a summerlike level of mugginess, with dewpoints in the low-mid 70s. The center of Hurricane Rafael will remain south of 25N. So Rafael will have no effect on our weather today or beyond. && .SHORT TERM... (Friday through Saturday night) Issued at 322 AM EST Thu Nov 7 2024 Surface high pressure will move off the Northeast U.S. coast on Saturday. This will result in a push of increased NE-E low-level flow arriving on Saturday. This will start to push somewhat drier air across the region on Saturday, though high 500 mb heights and an air mass sourced off that Atlantic will still be warm and moister than normal for November. && .LONG TERM... (Sunday through Wednesday) Issued at 322 AM EST Thu Nov 7 2024 The 500 mb ridge axis will push south of the area late this weekend and early next week. After weeks of having the mid- latitude westerlies well removed to the north, they will have a chance to slowly spread equatorward. Gradual drying the air mass is expected through the first half of next week, which will allow nighttime temperatures to cool off a few degrees more each successive night. && .AVIATION... (06Z TAFS) Issued at 322 AM EST Thu Nov 7 2024 A richly and unseasonably moist air mass will be in place over the terminal for the next 24 hours. Regional radars shows a solid line of heavy showers and embedded thunderstorms from Apalachicola to Valdosta. This line will slowly move northwest overnight, gradually exiting the VLD vicinity but invading the TLH terminal through sunrise. During the day on Thursday, most of the larger scale lift will dissipate, but thermal heating and will lead to some bubbly convective showers during the afternoon, particularly near and south of the FL state line. && .MARINE... Issued at 322 AM EST Thu Nov 7 2024 At 4 AM EST, the center of Hurricane Rafael was located about 180 miles west of Key West, Florida. Rafael was moving to the northwest at 12 mph. A turn to the west is expected later today. Rafael will move over the southern Gulf of Mexico for the next few days while weakening, staying well south of the waters. So the main impact will be long- period swell spreading out from Rafael. Otherwise through Monday, high pressure off to the northeast will maintain easterly breezes. && .FIRE WEATHER... Issued at 322 AM EST Thu Nov 7 2024 Many districts picked up wetting rain on Wednesday and Wednesday. Rain today will be more hit-and-miss, but where rain occurs, it should amount to a wetting rain. Areas of poor afternoon dispersion will still prevail today due to the effect of thicker clouds and the prevalence of showers. Beyond today, the air mass will remain unseasonably warm through at least this weekend, and the air mass will retain near- summerlike mugginess. Despite the warm temperatures, the lack of wind and high humidity will limit fire weather concerns. && .HYDROLOGY... Issued at 322 AM EST Thu Nov 7 2024 Valdosta saw incredible rainfall amounts and a damaging flash flood on Wednesday evening. Other parts of south Georgia also got heavy rain. QPF today is generally one inch or less, but local amounts of 2-3 inches will be possible beneath heavier thunderstorm cores. Moving forward, those rains have lowered flash flood guidance today, especially in areas east of U.S. Highway 19. Will therefore continue the Flood Watch east of U.S. 19, but have dropped it west of U.S. 19. Heavy rain in the Withlacoochee basin forced a rapid rise from local runoff at Skipper Bridge (near Valdosta). More water from further upstream will come downstream and is forecast to push the river into minor stage this evening. Beyond this evening, little if any rain is forecast for the next week. Additional flooding is not expected. && .SPOTTER INFORMATION STATEMENT... Spotter activation is not requested. However, spotters are always encouraged to safely report significant weather conditions when they occur by calling the office or tweeting us @NWSTallahassee. && .PRELIMINARY POINT TEMPS/POPS... Tallahassee 70 83 69 82 / 40 10 0 0 Panama City 71 84 70 83 / 30 10 0 0 Dothan 70 82 68 81 / 20 20 10 10 Albany 70 81 67 80 / 20 10 0 0 Valdosta 70 84 68 82 / 30 10 10 0 Cross City 69 86 68 85 / 20 0 0 0 Apalachicola 72 79 71 79 / 30 0 0 0 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...Flood Watch through this afternoon for FLZ018-019. High Rip Current Risk through late Sunday night for FLZ108-112- 114-115. High Surf Advisory from 6 PM this evening to noon EST Friday for FLZ115. GA...Flood Watch through this afternoon for GAZ127>131-146>148- 157>161. AL...None. GM...None. && $$ NEAR TERM...Haner SHORT TERM...Haner LONG TERM....Haner AVIATION...Haner MARINE...Haner FIRE WEATHER...Haner HYDROLOGY...Haner