Area Forecast Discussion
Issued by NWS Tampa Bay Area, FL

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414 FXUS62 KTBW 200729 AFDTBW Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 329 AM EDT Mon May 20 2024 ...New DISCUSSION, AVIATION, MARINE, FIRE WEATHER... .DISCUSSION...
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Issued at 325 AM EDT Mon May 20 2024 Although much of the area remained rain free on Sunday, limited rain chances are expected to continue today and Tuesday with lingering moisture likely to produce a few showers and storms during the afternoon and evening primarily over the interior as a weak surface boundary remains draped across the peninsula while a trough aloft extends SW across the state from the W Atlantic. Guidance continues to indicate meager rain chances for W FL today with PoPs generally 20-30 percent. With the setup continuing to favor interior convection and PWATs trending down toward the 1-1.3 inch range across most of the area today through early Tuesday, lower PoPs seem likely with best chances along the interior. As the trough aloft begins to shift east into the Atlantic on Tuesday, surface ridging along the E Seaboard will begin gradually building into the state with low-level NE winds overspreading the area and advecting Atlantic moisture across the state leading to a slight uptick in PoPs Tuesday afternoon with highest chances still focused across the interior but spreading further across W FL. By Wednesday upper ridging looks to build NE across the state from the SW Gulf while the surface ridge remains in place, leading to mainly dry conditions for the majority of the area as subsidence limits moisture depth and rain chances, mainly to 20 percent or less for southern interior and SWFL locations. Shortwaves and attendant surface low pressure systems trekking across the OH/TN Valleys over the latter half of the week will weaken the ridging aloft while the surface ridge will shift E into the Atlantic in response, causing winds to shift to SE-S locally late week into the weekend with gradually increasing moisture and an increase in rain chances over the weekend into early next week. Temps generally within a few degrees of average over the early part of the week before warming to above normal over the latter half of the week with the ridging over the area. Expect afternoon highs in the upper 80s to lower 90s away from the immediate coast today and Monday with coastal areas in the lower to mid 80s, then warming into the lower to mid 90s mid week and beyond away from the coast with immediate coastal areas in the mid to upper 80s.
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&& .AVIATION...
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(06Z TAFS) Issued at 145 AM EDT Mon May 20 2024 VFR expected through period with light winds overnight increasing out of the W-NW late morning into afternoon, highest in afternoon with higher gusts. Winds shift out of the NE and diminish during the evening. While afternoon and evening convection looks to remain east of terminals and confidence does not warrant mention this cycle, interior and SWFL terminals may require adjustments if trends favor potential impacts.
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&& .MARINE...
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Issued at 325 AM EDT Mon May 20 2024 A weak surface boundary remains over the waters with W-NW winds today increasing along the immediate coast during the afternoon with sea breeze enhancement. High pressure then builds along the E Seaboard and over the waters Tuesday into late week favoring NE to E winds developing over the waters, turning onshore with the sea breeze during the afternoons followed by easterly surges late evening into overnight. The high shifts into the Atlantic late week into the weekend allowing winds to become more S-SE over the weekend into early next week.
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&& .FIRE WEATHER...
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Issued at 325 AM EDT Mon May 20 2024 A weak surface boundary remains draped across the state with winds generally NW-N today. High pressure builds into the state Tuesday into late week favoring NE-E winds before shifting into the W Atlantic into the weekend allowing winds to shift out of the SE-S. Expect winds near the coast to turn onshore during the afternoons with the sea breeze.
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&& .PRELIMINARY POINT TEMPS/POPS...
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TPA 90 73 91 75 / 10 10 20 0 FMY 91 72 92 73 / 20 20 30 10 GIF 91 70 90 71 / 30 10 40 0 SRQ 90 71 92 73 / 10 10 20 10 BKV 91 65 91 66 / 20 10 20 0 SPG 88 76 90 77 / 10 10 20 0
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&& Sea Breeze Thunderstorm Regime For Monday: 5 Sea Breeze Thunderstorm Regime For Tuesday: 2 For additional information on sea breeze regimes, go to: https://www.weather.gov/tbw/ThunderstormClimatology && .TBW WATCHES/WARNINGS/ADVISORIES... FL...None. Gulf waters...None. && $$ DISCUSSION/AVIATION/MARINE/FIRE WEATHER...Hurt DECISION SUPPORT/CLIMATE...Wynn