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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 16 July 2025

Today Tonight and Thursday.

Wind south 10 knots increasing to southwest 15 late overnight then veering to northwest 15 near noon Thursday. Wind veering to north 15 Thursday evening.

Scattered showers ending this evening with a risk of thunderstorms. Scattered showers Thursday with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 16 July 2025
Today Tonight and Thursday. Waves less than 0.5 metres building to 0.5 early Thursday morning.

Extended Forecast

Issued 03:00 AM EDT 16 July 2025
Friday Wind northeast 15 knots diminishing to light in the morning.
Saturday Wind light.
Sunday Wind light.

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

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

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 16 July 2025 Today Tonight and Thursday At 10:30 a.m. EDT today trough located on a line northeast-southwest
over North Channel.
By 10:30 a.m. EDT Thursday trough located on a line
northeast-southwest over Lake Simcoe.

At 10:30 a.m. EDT today low 1008 mb located over western Wisconsin.
By 10:30 a.m. EDT Thursday low 1004 mb located over Georgian Bay.

At 10:30 a.m. EDT today high 1024 mb located over southeastern
Saskatchewan.
By 10:30 a.m. EDT Thursday high 1021 mb located over western
Minnesota.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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