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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 10:30 AM EDT 18 September 2021

Today Tonight and Sunday.

Wind northwest 10 knots increasing to west 15 this afternoon then veering to north 15 this evening. Wind diminishing to northeast 10 early Sunday morning then becoming light near noon Sunday. Wind becoming east 10 Sunday evening.

Waves

Issued 10:30 AM EDT 18 September 2021
Today Tonight and Sunday. Waves one half metre or less building to one half to one metre early this evening then subsiding to one half metre or less Sunday morning.

Extended Forecast

Issued 03:00 AM EDT 18 September 2021
Monday Wind light becoming southeast 15 knots in the afternoon.
Tuesday Wind south 20 knots.
Wednesday Wind south 20 knots becoming northwest 20 late in the day.

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Weather Conditions

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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 18 September 2021 Today Tonight and Sunday At 10:30 a.m. EDT today cold front located on a line
northeast-southwest over New York State.
By 10:30 a.m. EDT Sunday departing cold front located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EDT today high 1024 mb located near Whitefish Bay.
By 10:30 a.m. EDT Sunday high 1025 mb located over southern Quebec.

By 10:30 a.m. EDT Sunday approaching low 992 mb located over
Manitoba.

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