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Eastern Lake Ontario


Marine Forecast

Issued 06:30 PM EDT 23 July 2024

Tonight and Wednesday.

Wind light becoming southeast 10 knots near midnight then increasing to south 15 early Wednesday morning. Wind veering to southwest 15 Wednesday afternoon.

Risk of thunderstorms early this evening. Risk of thunderstorms Wednesday afternoon and evening. Scattered showers Wednesday afternoon and evening.


Issued 06:30 PM EDT 23 July 2024
Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 Wednesday morning.

Extended Forecast

Issued 06:30 PM EDT 23 July 2024
Thursday Wind west 15 knots.
Friday Wind northwest 15 knots diminishing to light.
Saturday 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.

No watches or warnings in effect.


Technical Marine Synopsis

Issued 6:30 PM EDT 23 July 2024 Tonight and Wednesday At 6:30 p.m. EDT tonight low 1013 mb located near Chicago.
By 6:30 p.m. EDT Wednesday low 1015 mb located over eastern Ontario.

At 6:30 p.m. EDT tonight ridge located on a line east-west over
northern Ontario.
By 6:30 p.m. EDT Wednesday ridge located on a line
northeast-southwest over northern Ontario.

Great Lakes - Lake Huron Area

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