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Western Lake Ontario

Forecast

Marine Forecast

Issued 10:30 AM EDT 25 June 2024

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind southwest 15 knots increasing to southwest 20 near noon then diminishing to southwest 15 near midnight. Wind diminishing to west 10 late overnight then increasing to southwest 15 Wednesday morning. Wind veering to northwest 15 Wednesday evening.

Scattered showers this afternoon and tonight. Risk of thunderstorms this afternoon. Scattered showers Wednesday afternoon and evening.

Waves

Issued 10:30 AM EDT 25 June 2024
Today Tonight and Wednesday. Waves 0.5 metres building to 1 to 1.5 this afternoon then subsiding to 0.5 to 1 late overnight.

Extended Forecast

Issued 03:00 AM EDT 25 June 2024
Thursday Wind northwest 15 knots.
Friday Wind light becoming east 15 knots.
Saturday Wind south 20 knots.

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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 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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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 27 April 2024 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Squall warning in effect

Western Lake Ontario

Issued 2:08 PM EDT 25 June 2024 A wake low has developed in response to the departing squall line. This wake low could produce wind gusts up to 50 knots.

Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately. Consider delaying or postponing travel in areas under the squall warning.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Strong wind warning in effect

Western Lake Ontario

Issued 2:11 PM EDT 25 June 2024

'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.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 25 June 2024 Today Tonight and Wednesday At 10:30 a.m. EDT today departing ridge located on a line
northeast-southwest over West Virginia.

At 10:30 a.m. EDT today trough located on a line northeast-southwest
over Lake Superior.
By 10:30 a.m. EDT Wednesday departing trough located on a line
northeast-southwest over the Eastern Seaboard.

By 10:30 a.m. EDT Wednesday high 1021 mb located over southeastern
Saskatchewan.

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