Marine Weather Net

Bonita Beach to Englewood, FL out 20 NM Marine Forecast


TODAY

E
WINDS
5 KNOTS

TONIGHT

SE
WINDS
5 - 10
KNOTS

TUESDAY

SE
WINDS
5 - 10
KNOTS

TUESDAY NIGHT

SE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ856 Forecast Issued: 231 AM EDT Mon Sep 21 2026

Today...East Winds Around 5 Knots, Becoming South Late. Seas 1 Foot Or Less. Wave Detail: East 1 Foot At 2 Seconds. Bay And Inland Waters Smooth. Scattered Showers And Thunderstorms.
Tonight...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 3 Seconds. Bay And Inland Waters Light Chop. Scattered Showers And Thunderstorms.
Tuesday...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 3 Seconds. Bay And Inland Waters Light Chop. Numerous Showers And Scattered Thunderstorms.
Tuesday Night...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 4 Seconds. Bay And Inland Waters Light Chop. Numerous Showers And Scattered Thunderstorms.
Wednesday...Southeast Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 3 Seconds. Bay And Inland Waters Smooth. Numerous Showers And Scattered Thunderstorms.
Wednesday Night...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 4 Seconds. Bay And Inland Waters Light Chop. Scattered Thunderstorms. Numerous Showers, Mainly In The Evening.
Thursday...East Winds 5 To 10 Knots, Becoming Southeast In The Afternoon. Seas 1 Foot Or Less. Bay And Inland Waters Light Chop. Scattered Showers And Thunderstorms.
Thursday Night...Northeast Winds 10 To 15 Knots. Seas Around 2 Feet. Bay And Inland Waters A Moderate Chop. Scattered Showers And Thunderstorms.
Friday...Northeast Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots In The Afternoon. Seas 2 To 3 Feet. Bay And Inland Waters A Moderate Chop. Isolated Showers And Thunderstorms In The Morning, Then Scattered Showers And Thunderstorms In The Afternoon. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
1234am EDT Monday September 21 2026

Issued at 1206am EDT Monday September 21 2026 Stagnant pattern will hold as an U/L low will remain quasi- stationary over west central Florida for one more day along with an associated pocket of cold air aloft. Scattered to numerous showers and thunderstorms will develop across west central and southwest Florida during the afternoon hours. The cold air aloft will enhance convective instability and the risk for damaging wind gusts and possibly small hail with stronger storms. PCPW values (Precipitable Water values) will remain around 2 inches. Expected slow storm movement will create the risk for localized flooding of urban and poor drainage areas.

An U/L disturbance and associated S/W trough will dig across the Ohio River Valley Monday night through Wednesday, and will lift the U/L low over the peninsula Monday night and will finally be absorbed into the northern stream flow as the U/L trough approaches the eastern seaboard on Wednesday. Scattered to numerous showers/storms are expected across west central and southwest Florida each day as deep layer moisture with PCPW values around 2 inches will hold over the forecast area.

An U/L ridge will build over the Lower Mississippi Valley and will extend briefly across the Florida peninsula mid week. However, a retrograding pattern will develop with the U/L ridge slowly pushing west, and a rex block will initially form over the northeast and mid Atlantic coast. As the overall pattern begins to amplify, a deep cut-off U/L low will develop along the eastern seaboard. This will induce U/L troughing over Florida and will likely push a frontal boundary south and down the Florida peninsula late in the week with drier air surface and aloft advecting across the region. This would significantly reduce pops, and dew points should drop below 70 in many areas for the first time in several months.

Marine
Issued at 1206am EDT Monday September 21 2026 Surface high pressure will hold over the waters through mid week with winds and seas below cautionary levels. A frontal boundary will push across the waters late in the week with increasing northeast winds in the wake of the front with a period of cautionary to possibly advisory level winds. The gradient will weaken over the weekend with winds and seas subsiding. The main hazard through mid week will be scattered to numerous showers and thunderstorms mainly from the evening to the early morning hours, which may produce locally gusty winds and rough seas.

Fire Weather
Issued at 1206am EDT Monday September 21 2026 No fire weather hazards are expected for the next several days as sufficient moisture will keep minimum afternoon relative humidity values well above critical levels.

Sea Breeze Thunderstorm Regime For Monday: 6 Sea Breeze Thunderstorm Regime For Tuesday: 6

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.