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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 19 April 2026

Today Tonight and Monday.

Wind west 15 knots veering to northwest 20 this afternoon then diminishing to northwest 15 late overnight. Wind diminishing to northwest 10 Monday morning then backing to west 10 Monday afternoon. Wind increasing to southwest 15 Monday evening.

Scattered showers or scattered flurries becoming scattered flurries this evening and ending Monday morning.

Waves

Issued 10:30 AM EDT 19 April 2026
Today Tonight and Monday. Waves 0.5 to 1 metre building to 1 to 1.5 early this evening then subsiding to 0.5 to 1 early Monday morning. Waves subsiding to 0.5 or less near noon Monday.

Extended Forecast

Issued 03:00 AM EDT 19 April 2026
Tuesday Wind south 20 knots diminishing to light late in the day.
Wednesday Wind light.
Thursday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 19 April 2026 Today Tonight and Monday Open water except 2 tenths thick lake ice along parts of the northeastern shore. Consolidated rotten thick lake ice along parts of the northeastern shore.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 19 April 2026 Today Tonight and Monday

Ice Coverage

Open water except 2 tenths thick lake ice along parts of the
northeastern shore. Consolidated rotten thick lake ice along parts
of the northeastern shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 19 April 2026 Today Tonight and Monday At 10:30 a.m. EDT today departing low 980 mb located over eastern
Hudson Bay.

At 10:30 a.m. EDT today departing cold front located over eastern
Quebec.

At 10:30 a.m. EDT today high 1028 mb located over North Dakota.
By 10:30 a.m. EDT Monday high 1031 mb located over Lower Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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