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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 30 March 2025

Today Tonight and Monday.

Wind east 20 knots veering to southeast 25 this afternoon then to south 20 near midnight. Wind veering to southwest 20 early Monday morning then to northwest 20 near noon Monday. Wind veering to north 15 Monday evening.

Periods of rain or periods of freezing rain and fog patches with a risk of thunderstorms tonight changing to scattered flurries or scattered showers Monday morning and ending near noon Monday.

Waves

Issued 10:30 AM EDT 30 March 2025
Today Tonight and Monday. Over open water waves 1 metre building to 1 to 1.5 early this evening then subsiding to 1 after midnight.

Extended Forecast

Issued 03:00 AM EDT 30 March 2025
Tuesday Wind north 20 knots diminishing to light in the afternoon.
Wednesday Wind southeast 20 knots increasing to southeast 30 late in the day.
Thursday Wind southeast 30 knots diminishing to southwest 20.

Ice Forecast*

Issued 12:00 PM EDT 30 March 2025 Today Tonight and Monday 2 tenths thick lake ice. CONSOLIDATED rotten thick lake ice along 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 Huron marine weather areas 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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 30 March 2025 Today Tonight and Monday

Ice Coverage

2 tenths thick lake ice. CONSOLIDATED rotten thick lake ice along
the northeastern shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 30 March 2025 Today Tonight and Monday At 10:30 a.m. EDT today departing ridge located on a line east-west
over northern Ontario.

At 10:30 a.m. EDT today low 1003 mb located over western Iowa.
By 10:30 a.m. EDT Monday low 992 mb located over southern Quebec.

By 10:30 a.m. EDT Monday approaching ridge located on a line
north-south over Manitoba.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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