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Eastern Lake Ontario


Marine Forecast

Issued 10:30 AM EDT 28 September 2021

Today Tonight and Wednesday.

Wind north 15 knots diminishing to northwest 10 near noon then increasing to north 15 near midnight. Wind diminishing to north 10 early Wednesday morning then backing to northwest 10 near noon Wednesday. Wind increasing to north 15 Wednesday evening.


Issued 10:30 AM EDT 28 September 2021
Today Tonight and Wednesday. Waves 0.5 to 1 metre subsiding to less than 0.5 this afternoon then building to 0.5 late overnight. Waves subsiding to less than 0.5 Wednesday morning then building to 0.5 Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 28 September 2021
Thursday Wind northeast 20 knots diminishing to light in the afternoon.
Friday Wind light.
Saturday Wind west 15 knots veering to north 15 late in the day.

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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 9 May 2021 Forecasts have ended for the season.

No watches or warnings in effect.


Technical Marine Synopsis

Issued 10:30 AM EDT 28 September 2021 Today Tonight and Wednesday At 10:30 a.m. EDT today ridge located on a line north-south over
Lake Michigan.
By 10:30 a.m. EDT Wednesday ridge located on a line
northwest-southeast over Lake Huron.

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