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Lake St. Clair


Marine Forecast

Issued 03:28 PM EDT 17 July 2024

Today Tonight and Thursday.

Wind light becoming north 10 knots this evening then increasing to north 15 late overnight. Wind diminishing to north 10 Thursday morning then becoming light Thursday evening.

Scattered showers ending this evening with a risk of thunderstorms.


Issued 10:30 AM EDT 17 July 2024
Today Tonight and Thursday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 17 July 2024
Friday Wind light.
Saturday Wind light.
Sunday Wind light.

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Map of Great Lakes - Lake Huron marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 27 April 2024 Forecasts have ended for the season.

Warnings (Ended)

Squall warning ended

Lake St. Clair

Issued 4:24 PM EDT 17 July 2024

Technical Marine Synopsis

Issued 10:30 AM EDT 17 July 2024 Today Tonight and Thursday At 10:30 a.m. EDT today trough located from Montréal to Lake
Ontario then to Lake Erie.
By 10:30 a.m. EDT Thursday departing trough located on a line
northeast-southwest over the Maritimes.

At 10:30 a.m. EDT today ridge from 1025 mb high located from North
Dakota to Manitoba.
By 10:30 a.m. EDT Thursday ridge from 1022 mb high located from
Iowa to Lake Superior then to James Bay.

Great Lakes - Lake Huron Area

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