Tampa Bay Marine Forecast
| Today...Northeast Winds 10 To 15 Knots. Bay And Inland Waters A Moderate Chop. Isolated Showers And Thunderstorms Early This Afternoon. Scattered Showers And Thunderstorms Late. |
| Tonight...East Winds 5 To 10 Knots. Bay And Inland Waters Light Chop. Scattered Showers And Thunderstorms In The Evening. |
| Saturday...Northeast Winds 5 To 10 Knots. Bay And Inland Waters Light Chop. Scattered Showers And Thunderstorms In The Afternoon. |
| Saturday Night...Northeast Winds 5 To 10 Knots, Becoming East After Midnight. Bay And Inland Waters Light Chop. Numerous Showers And Thunderstorms, Mainly In The Evening. |
| Sunday...East Winds 5 To 10 Knots, Becoming Northeast In The Afternoon. Bay And Inland Waters Light Chop. Isolated Showers And Thunderstorms In The Morning, Then Showers And Numerous Thunderstorms In The Afternoon. |
| Sunday Night...Northeast Winds 5 To 10 Knots, Becoming Southeast After Midnight. Bay And Inland Waters Light Chop. Showers And Numerous Thunderstorms In The Evening, Then Scattered Showers With Isolated Thunderstorms After Midnight. |
| Monday...East Winds 5 To 10 Knots, Becoming South In The Afternoon. Bay And Inland Waters Light Chop. Isolated Showers And Thunderstorms In The Morning, Then Numerous Showers And Thunderstorms In The Afternoon. |
| Monday Night...Southeast Winds 5 To 10 Knots. Bay And Inland Waters Light Chop. Numerous Showers And Thunderstorms, Mainly In The Evening. |
| Tuesday...Southeast Winds Around 5 Knots, Becoming Southwest In The Afternoon. Bay And Inland Waters Smooth. Scattered Showers. Isolated Thunderstorms In The Morning, Then Scattered Thunderstorms In The Afternoon. Winds And Waves Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 733am EDT Fri September 18 2026 Issued at 311am EDT Fri September 18 2026 Currently at the surface, broad high pressure is holding north of Florida, while a weak area of low pressure sits over the Caribbean, keeping east and northeast flow in place. Early morning water vapor satellite imagery is showing the unseasonably dry air mass pushing west out of the Florida Peninsula and into the Gulf waters as deeper moisture advects into the state from the Atlantic on the persistent easterly low level flow. This will result in a return of higher rain chances today and into the weekend, although enough dry air is lingering over the Nature Coast counties to keep rain coverage there isolated at best today. Otherwise, scattered to numerous showers and storms will move west across the rest of the forecast area today, and across the entire forecast area on Saturday. Atmospheric moisture is forecast to continue to increase Sunday through the first half of next week, resulting in more numerous storm coverage, and perhaps some higher rain totals. Under continued easterly or northeasterly flow, the daily pattern will typically involve showers and storms developing over the eastern half of the peninsula and shifting onshore from the Atlantic during the morning hours, then generally spreading west into the forecast area throughout the afternoon and early evening hours. Otherwise, temperatures will be seasonable, with highs in the upper 80s to lower 90s and morning lows in the lower to mid 70s. Marine Issued at 311am EDT Fri September 18 2026 Breezy east and northeast winds will subside today as high pressure to the north of the waters settles in, with winds remaining near Small Craft Exercise Caution levels today, then generally remaining less than 15 knots during the weekend and into early next week. However, increasing moisture will lead to greater storm coverage, with locally higher winds and rough seas expected near the strongest storms. Fire Weather Issued at 311am EDT Fri September 18 2026 Atmospheric moisture will increase from the south today through the weekend, bringing a return of higher rain chances. While the Nature Coast counties are only expected to see isolated showers or storms today, scattered to numerous storms will develop across the rest of west central and southwest Florida today, then across the entire area on Saturday. No humidity concerns. Sea Breeze Thunderstorm Regime For Friday: 3 Sea Breeze Thunderstorm Regime For Saturday: 2 For additional information on sea breeze regimes, go to: https://www.weather.gov/tbw/ThunderstormClimatology NOAA Tampa FL Office: Watches - Warnings - Advisories FL...None. Gulf waters...None. |
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