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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 10:30 AM EDT 24 July 2024

Today Tonight and Thursday.

Strong wind warning in effect.

Wind south 15 knots with gusts to 50 near thunderstorms. Wind becoming southwest 15 this afternoon with gusts to 50 near thunderstorms. Wind becoming west 15 near midnight then increasing to west 20 near noon Thursday. Wind diminishing to northwest 15 Thursday evening.

Scattered showers this afternoon and this evening with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 24 July 2024
Today Tonight and Thursday. Waves 0.5 to 1 metre building to 1 to 1.5 Thursday afternoon then subsiding to 0.5 to 1 Thursday evening.

Extended Forecast

Issued 03:00 AM EDT 24 July 2024
Friday Wind northwest 15 knots diminishing to light in the morning.
Saturday Wind light.
Sunday Wind light.

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Weather Conditions

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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 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)

Strong wind warning in effect

Eastern Lake Ontario

Issued 10:30 AM EDT 24 July 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.

Watches (In effect)

Squall watch in effect

Eastern Lake Ontario

Issued 10:51 AM EDT 24 July 2024 Conditions are favourable for the development of squalls with wind gusts up to 50 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times.

Thunderstorms are expected to move over the area today and diminish this evening.

Proceed with caution as visibility may suddenly be reduced to near zero. Vessels without lightning protection should make their way to shore immediately. Consider delaying or postponing travel in areas under the Squall Watch.

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

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 24 July 2024 Today Tonight and Thursday At 10:30 a.m. EDT today low 1013 mb located over Georgian Bay.
By 10:30 a.m. EDT Thursday low 1009 mb located over southern Quebec.

At 10:30 a.m. EDT today ridge located on a line east-west over
James Bay.
By 10:30 a.m. EDT Thursday ridge located on a line north-south
over northern Ontario.

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