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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 08:11 PM EDT 21 June 2021

Tonight and Tuesday.

Strong wind warning in effect.

Wind west 25 knots veering to northwest 20 near midnight then diminishing to northwest 15 early Tuesday morning. Wind backing to west 15 near noon Tuesday.

Scattered showers this evening with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 21 June 2021
Tonight and Tuesday. Waves one and one half metres subsiding to one early Tuesday morning.

Extended Forecast

Issued 06:30 PM EDT 21 June 2021
Wednesday Wind light becoming south 15 knots late in the day.
Thursday Wind south 15 knots.
Friday Wind south 15 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario 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.
Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 10:24 PM EDT 21 June 2021

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 21 June 2021 Tonight and Tuesday At 6:30 p.m. EDT tonight low 989 mb located over central Quebec.
By 6:30 p.m. EDT Tuesday low 976 mb located over northern Quebec.

At 6:30 p.m. EDT tonight cold front from low located on a line
northeast-southwest over Lake Ontario.
By 6:30 p.m. EDT Tuesday cold front from low located on a line
north-south over New Brunswick.

At 6:30 p.m. EDT tonight ridge located on a line north-south over
North Dakota.
By 6:30 p.m. EDT Tuesday ridge located on a line northeast-southwest
over Lake Huron.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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