Eastern Lake Ontario


Marine Forecast

Issued 03:00 AM EDT 30 April 2017

Today Tonight and Monday

Wind northeast 15 knots increasing to northeast 20 early this morning then veering to southeast 15 overnight. Wind veering to south 15 near noon Monday then to southwest 15 Monday evening.

A few showers this morning with a risk of thunderstorms. Chance of showers beginning this afternoon changing to showers Monday afternoon with risk of thunderstorms then to chance of showers Monday evening.


Issued 03:00 AM EDT 30 April 2017
Today Tonight and Monday Waves one metre building to one and one half metres this morning then subsiding to one Monday morning.

Extended Forecast

Issued 03:00 AM EDT 30 April 2017
Tuesday Wind southwest 20 knots increasing to southwest 25 in the afternoon.
Wednesday Wind southwest 20 knots diminishing to light.
Thursday Wind light.

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Weather Conditions

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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.

No watches or warnings in effect.


Technical Marine Synopsis

Issued 3:00 AM EDT 30 April 2017 Today Tonight and Monday At 3:00 a.m. EDT today ridge located on a line northwest-southeast
over northeastern Ontario.
By 3:00 a.m. EDT Monday ridge located on a line northwest-southeast
over central Quebec.

At 3:00 a.m. EDT today low 999 mb located over northeastern
By 3:00 a.m. EDT Monday low 992 mb located over Iowa.

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