Eastern Lake Ontario


Marine Forecast

Issued 10:30 AM EDT 28 May 2017

Today Tonight and Monday.

Wind northeast 10 knots increasing to northeast 15 early this evening then veering to southeast 15 near midnight. Wind veering to southwest 15 Monday morning.

A few showers beginning near midnight and ending Monday evening. Risk of thunderstorms overnight and Monday morning. Fog patches dissipating near noon. Fog patches forming near midnight and dissipating near noon Monday.


Issued 10:30 AM EDT 28 May 2017
Today Tonight and Monday. Waves less than one half metre building to one half metre this afternoon and to one early Monday morning.

Extended Forecast

Issued 03:00 AM EDT 28 May 2017
Tuesday Wind southwest 20 knots diminishing to light in the morning then becoming southwest 15 late in the day.
Wednesday Wind southwest 15 knots.
Thursday Wind northwest 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 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 (Ended)

Strong wind warning ended

Eastern Lake Ontario

Issued 10:30 AM EDT 28 May 2017

Technical Marine Synopsis

Issued 10:30 AM EDT 28 May 2017 Today Tonight and Monday At 10:30 a.m. EDT today departing ridge located on a line
north-south over New Brunswick.

At 10:30 a.m. EDT today low 1002 mb located east of Lake of
the Woods.
By 10:30 a.m. EDT Monday low 1002 mb located over Lake Nipigon.

At 10:30 a.m. EDT today low 1006 mb located over western Indiana.
By 10:30 a.m. EDT Monday low 1001 mb located over eastern Ontario.

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