729 FXUS62 KTBW 101235 AFDTBWArea Forecast Discussion National Weather Service Tampa Bay Ruskin FL 835 AM EDT Wed Sep 10 2025
...New AVIATION...
.DISCUSSION... Issued at 322 AM EDT Wed Sep 10 2025
A stalled frontal boundary remains stretched across the Florida Peninsula, terminating in the weak area of low pressure that has been spinning over the Gulf all week. These features are keeping deep moisture in place, with another day of numerous to widespread showers and storms across virtually the entire area...with the exception of scattered coverage over Levy County as dry air starts to creep in behind the front. Similar to previous days, training storms could produce some minor flooding in a few spots.
Through the rest of the week and into the weekend, an upper level trough digging into the southeastern US will give the frontal boundary a push to the south, allowing drier air to spread in across the forecast area. This will result in a gradual transition of rain chances, with isolated to scattered coverage north of I-4 on Thursday and numerous to widespread to the south, then isolated to scattered coverage over central portions of the forecast area on Friday with numerous storms over southwest Florida, then isolated to scattered coverage this weekend through early next week. Apart from the lower rain chances, the drier airmass will also drop surface dew points down to the 60s and low 70s by this weekend, which should make the afternoons noticeably less humid.
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.AVIATION... (12Z TAFS) Issued at 834 AM EDT Wed Sep 10 2025
A front over I-4 has helped to bring a low cloud deck to all TAF sites this morning. Many are either LIFR or IFR. These clouds will slowly lift over the next few hours but could stay at MVFR through at least the early afternoon hours. Storms will start up in the late afternoon and evening hours with the best chance in SW Florida.
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.MARINE... Issued at 322 AM EDT Wed Sep 10 2025
A surface area of low pressure over the eastern Gulf will continue to slowly drift west and weaken through the rest of the week as a weak frontal boundary sags south into the area. Deep moisture wrapping around this low will continue to fuel scattered to numerous showers and storms today and Thursday. Drier air filling in from the north behind the front will then bring in lower rain chances late in the week and into the weekend.
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.FIRE WEATHER... Issued at 322 AM EDT Wed Sep 10 2025
Deep moisture holding over the area will bring scattered to numerous thunderstorms today, then rain chances will drop over the northern half of the area as a drier air mass starts to move in. No humidity concerns.
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.PRELIMINARY POINT TEMPS/POPS... TPA 89 76 89 75 / 70 30 50 20 FMY 89 76 90 75 / 70 40 80 30 GIF 90 74 88 73 / 80 30 60 20 SRQ 88 74 87 73 / 70 50 70 40 BKV 88 71 89 69 / 60 20 30 10 SPG 86 76 87 75 / 70 40 60 30
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Sea Breeze Thunderstorm Regime For Wednesday: 4 Sea Breeze Thunderstorm Regime For Thursday: 2
For additional information on sea breeze regimes, go to: https://www.weather.gov/tbw/ThunderstormClimatology
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.TBW WATCHES/WARNINGS/ADVISORIES... FL...None. Gulf waters...None.
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DISCUSSION/AVIATION/MARINE/FIRE WEATHER...Shiveley DECISION SUPPORT...Pearce UPPER AIR/CLIMATE...Pearce
NWS TBW Office Area Forecast Discussion