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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 31 July 2021

Today Tonight and Sunday.

Wind northwest 15 knots backing to west 15 near noon then to southwest 15 early this evening. Wind diminishing to south 10 near midnight then veering to southwest 10 early Sunday morning. Wind becoming light near noon Sunday then becoming north 15 Sunday evening.

Scattered showers overnight and Sunday with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 31 July 2021
Today Tonight and Sunday. Waves one half to one metre subsiding to one half metre or less late overnight.

Extended Forecast

Issued 03:00 AM EDT 31 July 2021
Monday Wind north 20 knots diminishing to southwest 15 in the afternoon.
Tuesday Wind light becoming southwest 15 knots.
Wednesday 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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land station Land Station
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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 31 July 2021 Today Tonight and Sunday At 10:30 a.m. EDT today ridge located on a line east-west over
Indiana.
By 10:30 a.m. EDT Sunday ridge located on a line east-west over
the Maritimes.

At 10:30 a.m. EDT today low 1012 mb located east of Lake Nipigon.
By 10:30 a.m. EDT Sunday low 1010 mb located over Lake Nipissing.

By 10:30 a.m. EDT Sunday ridge located on a line north-south over
North Dakota.

Great Lakes - Lake Huron Area

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