Western Lake Ontario


Marine Forecast

Issued 06:30 PM EDT 22 July 2017

Tonight and Sunday.

Strong wind warning in effect.

Wind light increasing to northeast 15 knots early Sunday morning and to east 20 near noon Sunday. Wind increasing to east 25 Sunday evening.

Chance of showers early this evening and beginning Sunday evening with risk of thunderstorms.


Issued 06:30 PM EDT 22 July 2017
Tonight and Sunday. Waves less than one half metre building to one half to one metre Sunday morning and to one and one half metres Sunday afternoon.

Extended Forecast

Issued 06:30 PM EDT 22 July 2017
Monday Wind northeast 20 knots.
Tuesday Wind north 15 knots diminishing to light late in the day.
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 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 Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Port Weller St. Catharines Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Municipal Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport Killarney Western Islands Cove Island Long Point Port Colborne Erieau Point Pelee
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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 2017 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Western Lake Ontario

Issued 6:30 PM EDT 22 July 2017

'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.


Technical Marine Synopsis

Issued 6:30 PM EDT 22 July 2017 Tonight and Sunday At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northwest-southeast over Quebec.

At 6:30 p.m. EDT tonight low 1006 mb located over Wisconsin.
By 6:30 p.m. EDT Sunday low 1006 mb located over Lake Erie.

By 6:30 p.m. EDT Sunday ridge located on a line northeast-southwest
over western Lake Superior.

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