Area Forecast Discussion
Issued by NWS
Issued by NWS
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483 FXUS62 KTAE 050913 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 413 AM EST Wed Feb 5 2025 ...New SYNOPSIS, NEAR TERM, SHORT TERM, LONG TERM, MARINE, FIRE WEATHER, HYDROLOGY... .SYNOPSIS... Issued at 413 AM EST Wed Feb 5 2025 High pressure at the surface and aloft will prevail through this weekend, keeping the weather warm and settled, with a daily rhythm of nighttime and morning fog and low clouds. Early next week, a cold front will make slow progress past the Mid-South and Tennessee Valley regions. Proximity to the slow-moving front will start to increase chances for showers or perhaps a few thunderstorms as we move out through the first half of next week. && .NEAR TERM... (Today and tonight) Issued at 413 AM EST Wed Feb 5 2025 Fog. Clouds. Sun. Warm. Clouds. Fog. That about sums up the forecast over the next 24 hours. Patchy to areas of dense fog are ongoing early this morning with a Dense Fog Advisory in effect across our Alabama and Florida counties. Fog has also formed in southwestern Georgia, but the coverage area and how dense it is remains above criteria right now. We`ll continue to monitor trends in case the Dense Fog Advisory needs to be expanded later this morning. Any fog this morning will slowly lift and dissipate throughout the morning. The timing of it is forecast to be an hour or two slower than Tuesday thanks to some higher clouds passing overhead limiting the boundary layer mixing potential. Still, we should break out into a fair amount of sunshine this afternoon. Temperatures are forecast to climb into the upper 70s to lower 80s, or a solid 10 to 15 degrees above normal for early February. Another round of low stratus/fog is expected again tonight as we`re firmly in the middle of "fog" season. Any lingering high clouds this afternoon should be bugging out to the east pretty quickly, leading to mainly clear skies tonight. Combine this with ample low-level moisture and calm winds and fog should form once again. Most guidance suggests the fog over the coastal waters surging northward later tonight into early Thursday morning. There remains some uncertainty with how far north it is able to progress. Still, if the past few mornings are any indication, the fog should be more prevalent than modeled, so have included areas of fog for the entire forecast area tonight with widespread fog confined to our Florida counties for now. Temperatures will only manage the middle to upper 50s, or 10-15 degrees above normal. && .SHORT TERM LONG TERM... (Thursday through Sunday night) Issued at 413 AM EST Wed Feb 5 2025 A strong 500 mb high sitting over Cuba through this weekend will continue to hold the strong, consolidated mid-latitude jet stream well to our north, generally over and north of the Ohio Valley. We will have high upper heights and warm air aloft. A small surface high pressure center will remain anchored over the far northeast Gulf, forming a lobe at the western end of an Atlantic ridge axis. With high pressure at the surface and aloft, the ensuing subsidence inversions will keep the air mass stable, while trapping low- level moisture in place. During the nighttime and morning hours, this will result in low clouds and fog. Once the low stratus burns off late each morning, then afternoon sunshine will boost temperatures well above normal, especially beyond the reach of the cooling seabreeze over inland areas. Friday will feature low rain chances, mainly along and north of a Marianna-Albany line. The very tail end of a low pressure system moving up the Ohio Valley could support a few weak showers, but no frontal passage is expected. && .LONG TERM... (Monday through Tuesday) Issued at 413 AM EST Wed Feb 5 2025 During the first half of next week, the 500 mb high over Cuba will retreat southward and eastward a bit. The consolidated mid- latitude westerlies will slowly waver southward toward the Southern Plains and Tennessee Valley. A sharp cold front will make slowly progress southward past the Mid-South and Tennessee Valley regions. South of this feature, increasing southerly flow off the Gulf will further moisten the air mass, while proximity to the front and perturbations in the jet stream will bring an increasing chance of showers. Enough weak convective instability could develop for some isolated thunder on Tuesday, especially if the front can get far enough south through Alabama and Georgia. Some cooling is forecast on Tuesday. The front is most likely to stay to our north through at Tuesday, but the increase in clouds, wind, and some cooling aloft will limit the high-end potential of afternoon temperatures. && .AVIATION... (06Z TAFS) Issued at 1227 AM EST Wed Feb 5 2025 The biggest challenge tonight will be how prevalent the fog is over the aerodromes. IFR visibility is expected across most TAF sites at some point overnight, but the timing and duration remain rather uncertain. As a result, expect amendments throughout the night at all TAF sites. Conditions improve by mid-morning with VFR conditions expected at all TAF sites this afternoon into this evening. Another round of fog is expected tonight, with most of it happening just beyond this TAF period, except for KECP, which could see it begin near the end of it. && .MARINE... Issued at 413 AM EST Wed Feb 5 2025 A surface high pressure center will sit over the far northeast Gulf through Sunday. Light to gentle breezes will prevail, with southerlies over the waters west of Apalachicola. Areas of fog will be a marine hazard through this weekend, especially over the cooler nearshore waters, owing to the moist stable air mass and the light winds. && .FIRE WEATHER... Issued at 413 AM EST Wed Feb 5 2025 Areas of dense fog are the biggest concerns through the rest of the work week. Low dispersions are forecast again today across most of the area thanks to surface high pressure centered over the region. Dispersions improve to end the week thanks to transport winds increasing out of the southwest. Relative humidity levels will generally remain above critical levels with light and variable winds. && .HYDROLOGY... Issued at 413 AM EST Wed Feb 5 2025 No flooding is expected through at least Tuesday of next week. Beyond next Tuesday, the Climate Prediction Center Hazard Outlook has a Slight Risk of heavy rain from Feb. 12-15, mainly over our Panhandle, southeast Alabama, and southwest Georgia counties. && .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 78 56 78 59 / 0 0 0 0 Panama City 74 59 72 61 / 0 10 10 10 Dothan 78 59 77 60 / 10 10 10 10 Albany 79 58 79 59 / 10 10 10 10 Valdosta 80 56 81 58 / 0 0 0 0 Cross City 79 53 78 56 / 0 0 0 0 Apalachicola 71 57 68 59 / 10 10 10 10 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...Dense Fog Advisory until 10 AM EST /9 AM CST/ this morning for FLZ007>019-026>029-034-108-112-114-115-118-127-128-134. GA...None. AL...Dense Fog Advisory until 9 AM CST this morning for ALZ065>069. GM...Dense Fog Advisory until 4 PM EST this afternoon for GMZ730-755- 765-775. Dense Fog Advisory until noon CST today for GMZ750-752. && $$ NEAR TERM...Reese SHORT TERM...Haner LONG TERM....Haner AVIATION...Reese MARINE...Haner FIRE WEATHER...Reese HYDROLOGY...Haner