Area Forecast Discussion
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254 FXUS62 KTAE 152322 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 722 PM EDT Sat Jun 15 2024 ...New AVIATION... .NEAR TERM... (Through Sunday) Issued at 235 PM EDT Sat Jun 15 2024 A quiet but warm night is in store for us thanks to surface high pressure presiding over a mostly dry airmass by June standards. Lingering convection is possible off the Nature Coast this evening. Forecast low temperatures are widespread mid 70s - several degrees below normal. Meanwhile, an inverted trough is apparent over the SE Gulf. This feature is poised to drift NW/NNW overnight and advect tropical moisture our way. As a result, expect scattered showers/thunderstorms to spread from south to north early tomorrow morning, then shift inland through the afternoon. The seabreeze should provide an additional focus for convection. Sunday`s peak PoP forecast is therefore in the chance to likely category. Given that the 12Z HREF depicts Precipitable Water ranging from 1.8- 2+ inches, there is potential for heavy rainfall capable of localized flooding from training cells. In addition, strong/gusty winds from water-loading microbursts are possible, for which decent signals exist via the SREF Wet Microburst Severity Index for Tallahassee/Apalachicola/Panama City. However, with minimal wind shear and recent dryness, there are no official risk outlooks by WPC/SPC. Otherwise, look for another hot/muggy day characterized by highs in the low/mid 90s (~98-102 heat indices). && .SHORT TERM... (Sunday night through Monday night) Issued at 235 PM EDT Sat Jun 15 2024 Both upper level and surface high pressure will generally hold somewhere over the mid Atlantic seaboard. To our southwest, in the Gulf near the Bay of Campeche, low pressure will be deepening. This will lead to a tighter pressure gradient developing over our Gulf waters and bring increasing winds. Gulf moisture will surge in over the waters and perhaps clipper our FL Panhandle counties, while the drier air from the high pressure system influences the region else where. Showers and thunderstorms will be possible Monday afternoon and evening over, but the drier air from the high should supress chances to about 15-30 percent over SW GA and FL Big Bend. West of these regions, PWATs may be a touch higher in SE AL and the W FL Panhandle where storm development is slightly more favorable and in the 20-40% range. && .LONG TERM... (Tuesday through Friday) Issued at 235 PM EDT Sat Jun 15 2024 For the start of the long term, upper level high pressure is forecast to be centered over the Carolinas, and it will lift to the north and east through the week. Dry conditions will prevail through the long term. However, we are watching an area of low pressure in the Bay of Campeche that has been highlighted by the NHC. With that low pressure to our southwest, and high pressure to our northeast, we will be between the pressure gradient, which will lead to breezy easterly winds over the region for the middle part of next week. PWATs are forecast to be around 1.5" and high pressure will still be influencing our weather, so showers may form, but not expecting too much in the way of thunderstorms to develop. PoPs for the long term range from 20%-40%, with better chances closer to the coast. Temperatures for the long term will have highs in the mid-90s and lows in the mid-70s. && .AVIATION...
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(00Z TAFS) Issued at 722 PM EDT Sat Jun 15 2024 VFR conditions are expected to prevail for tonight. On Sunday, scattered showers and thunderstorms are expected to spread inland from the Gulf over most of the area. ECP is the terminal most likely to see thunderstorms on Sunday with the chance at TLH also fairly high. Farther north, coverage will taper off to just a slight chance around ABY.
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&& .MARINE... Issued at 235 PM EDT Sat Jun 15 2024 Gentle to moderate southeast breezes will continue into Sunday. An unseasonable round of fresh to strong easterly breezes will get underway on Monday and continue through Wednesday, as pressure gradients tighten between strong high pressure off the U.S. Mid- Atlantic coast and a deepening area of tropical low pressure over the Bay of Campeche. Seas will build in response to this and may lead to a few rounds of Small Craft Advisory conditions. Showers and storms will be possible each day. && .FIRE WEATHER... Issued at 235 PM EDT Sat Jun 15 2024 A surge of tropical moisture spreading inland from the Gulf yields scattered showers and thunderstorms on Sunday capable of wetting rains. Axis of precipitation then shifts to the seabreeze zone and areas west to NW Monday-Tuesday. In addition, brisk easterly winds usher in high afternoon dispersions as the pressure gradient tightens across parts of the region. Otherwise, expect continued hot/muggy conditions with high temperatures in the 90s and peak heat indices up to the low 100s. && .HYDROLOGY... Issued at 235 PM EDT Sat Jun 15 2024 Isolated to scattered showers/thunderstorms will remain possible during the afternoon hours with the seabreeze. Heavy rainfall is possible during these storms which could lead to localized flash flooding. However, current river levels are good and are not concerned with significant flooding for the next several days. && .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 75 93 74 94 / 10 60 20 30 Panama City 77 87 76 91 / 20 70 30 40 Dothan 73 94 73 92 / 0 50 20 30 Albany 73 96 73 94 / 0 20 20 20 Valdosta 73 96 72 94 / 10 40 20 20 Cross City 71 94 71 94 / 30 70 20 30 Apalachicola 79 85 78 88 / 40 70 40 40 && .TAE WATCHES/WARNINGS/ADVISORIES...
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FL...High Rip Current Risk from 6 AM EDT /5 AM CDT/ Sunday through late Monday night for FLZ108-112-114-115. GA...None. AL...None. GM...None.
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&& $$ NEAR TERM...IG3 SHORT TERM...KR LONG TERM....Montgomery AVIATION...DVD MARINE...KR FIRE WEATHER...IG3 HYDROLOGY...Montgomery