


Area Forecast Discussion
Issued by NWS
Issued by NWS
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741 FXUS62 KTAE 181858 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 258 PM EDT Fri Apr 18 2025 ...New NEAR TERM, SHORT TERM, LONG TERM, MARINE, FIRE WEATHER, HYDROLOGY... .NEAR TERM... (Through Saturday) Issued at 255 PM EDT Fri Apr 18 2025 A 500 mb high will sit directly over our service area during the next 24 hours, with 500 mb heights of 5900-5920 meters. Such strong high pressure aloft will maintain large-scale subsidence and a very dry air mass above the surface-based mixed layer. The warm and dry air aloft will act as a strong cap and eliminate any chance of convection. Meanwhile, low-level southeast flow is increasing moisture in the boundary layer. Most CAMS guidance is pointing to fog late tonight along and west of U.S. Hwy 231, where surface dewpoints are in the 65- 70F range along Emerald Coast beaches. Otherwise, strong high pressure aloft is a favorable pattern for hot afternoon temperatures. Hottest temperatures near 90F will be along the I-75 corridor, where the SE-S surface wind will have a fetch straight up the hot land mass of the FL Peninsula. && .SHORT TERM AND LONG TERM... (Saturday night through Thursday) Issued at 255 PM EDT Fri Apr 18 2025 A strong upper level high pressure will be holding firm over the region at the start of the term. This will keep our temperatures warm and southerly flow will keep our dew points in the upper 50s and 60s. Patchy fog may develop during midweek mornings as there will be ample moisture available, along with light winds. Through the extended period, precip chances are low as all developing and passing shortwaves are forecast to remain well north of the region in the coming days. On Tuesday, an upper level shortwave over the Great Lakes region will have an accompanying cold front that could reach our northern tier of Alabama and Georgia counties. This would allow for our best chance (albeit low chance) for rain during this period with PoPs around 20-40 percent. The anticipated front is expected to stall before it can get any further through our region. Temperatures for the next week will be warm in the upper 80s with a few locations reaching the low 90s. Along the immediate coast, temps should hold in the mid-80s as the seabreeze should deter further warming. Overnight lows will be mild in the low to mid-60s. && .AVIATION... (18Z TAFS) Issued at 203 PM EDT Fri Apr 18 2025 The air mass is dry, and we will struggle this afternoon and get anything more than scattered pancake-flat high-based fair weather cumulus. The main story will be with fog and low cloud potential developing near ECP and DHN late tonight, as southerly flow bring a moister air mass in from the Gulf. Starting 1-2 hours after sunrise on Saturday, low-level stratus and stratocumulus will gradually lift into a SCT layer of fair weather cumulus by late morning. && .MARINE... Issued at 255 PM EDT Fri Apr 18 2025 High pressure between the Southeast U.S. and Bermuda will support prevailing moderate southeast breezes through Monday, with seas around 3-5 feet and breezes becoming fresh during the late night and morning surges. A dissipating cold front will stall out north of the waters on Tuesday, bringing an overall decrease in southeast breezes. && .FIRE WEATHER... Issued at 255 PM EDT Fri Apr 18 2025 Strong high pressure aloft on Saturday will keep afternoon temperatures well above normal, and southeast surface winds will continue to increase mugginess. A dying cold front will reach northern Alabama on Monday or Monday night, bringing a low chance of thunder to Alabama and Georgia districts on Monday and Tuesday, before the front dissipates completely. The large majority of districts will go through the next 7 days with no wetting rain. && .HYDROLOGY... Issued at 255 PM EDT Fri Apr 18 2025 There are chances for a shower or thunderstorm to squeeze out some measurable rainfall next week yet, the impacts will be minimal enough to not cause any flooding concerns. && .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 60 85 62 83 / 0 0 0 0 Panama City 62 81 64 80 / 0 0 0 0 Dothan 58 88 62 86 / 0 0 0 0 Albany 60 88 62 86 / 0 0 0 0 Valdosta 61 90 61 87 / 0 0 0 0 Cross City 59 89 60 87 / 0 0 0 0 Apalachicola 64 76 66 76 / 0 0 0 0 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AL...None. GM...None. && $$ NEAR TERM...Haner SHORT TERM...Montgomery LONG TERM....Montgomery AVIATION...Haner MARINE...Montgomery FIRE WEATHER...Haner HYDROLOGY...Montgomery