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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 14 June 2026

Today Tonight and Monday.

Wind west 15 knots veering to northwest 15 early this afternoon then diminishing to west 10 Monday morning. Wind increasing to west 15 Monday evening.

Scattered showers ending near midnight. Risk of thunderstorms late this morning and this afternoon.

Waves

Issued 10:30 AM EDT 14 June 2026
Today Tonight and Monday. Waves 0.5 metres.

Extended Forecast

Issued 03:00 AM EDT 14 June 2026
Tuesday Wind southwest 15 knots.
Wednesday Wind southwest 15 knots.
Thursday Wind southwest 30 knots diminishing to west 20 late in the day.

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Squall warning in effect

Lake St. Clair

Issued 11:52 AM EDT 14 June 2026 Squalls with wind gusts up to 40 knots and poor to very poor visibility in showers heavy at times are expected or occurring in the area.

A line of thunderstorms is moving northeast across the area.

Poor to very poor visibility may contribute to voyage delays and make marine navigation hazardous. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 14 June 2026 Today Tonight and Monday At 10:30 a.m. EDT today trough located from James Bay to Lake
Simcoe then to Lake St. Clair.
By 10:30 a.m. EDT Monday trough located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EDT today low 996 mb located over eastern Hudson Bay.
By 10:30 a.m. EDT Monday low 998 mb located over northern Hudson
Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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