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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 10:47 AM EDT 26 June 2019

Today Tonight and Thursday.

Squall watch in effect.

Wind south 10 knots increasing to southwest 15 near noon with gusts to 50 near thunderstorms. Wind becoming west 15 early this evening then diminishing to light near midnight. Wind light Thursday.

Risk of thunderstorms today.

Waves

Issued 10:30 AM EDT 26 June 2019
Today Tonight and Thursday. Waves one half metre or less building to one this afternoon then subsiding to less than one half metre late overnight.

Extended Forecast

Issued 03:00 AM EDT 26 June 2019
Friday Wind light.
Saturday Wind southwest 15 knots.
Sunday Wind west 15 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 19 May 2019 Forecasts available to mariners upon request.

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

 

[ Canadian Ice Service ]

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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 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 19 May 2019

Ice Coverage

Forecasts available to mariners upon request.

Warnings

Warnings (In effect)

Squall warning in effect

Eastern Lake Ontario

Issued 3:46 PM EDT 26 June 2019 Squalls with wind gusts up to 40 knots, frequent lightning, waterspout activity, hail of 1 to 2 centimetres and poor to very poor visibility in showers heavy at times are expected or occurring in the area.

Thunderstorms approaching from the northwest will move out over the lake late this afternoon. Squalls of 40 knots are likely, with higher gusts of 50 knots possible.

Frequent lightning and 2 cm hail are also possible.

Poor to very poor visibility may contribute to voyage delays and make marine navigation hazardous. Vessels without lightning protection should make their way to shore 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.

Watches (In effect)

Squall watch in effect

Eastern Lake Ontario

Issued 10:42 AM EDT 26 June 2019 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 with squalls of 50 knots are possible later this afternoon into this evening.

Poor to very poor visibility may contribute to voyage delays and make marine navigation hazardous. Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.

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 26 June 2019 Today Tonight and Thursday At 10:30 a.m. EDT today low 996 mb located over central James Bay.
By 10:30 a.m. EDT Thursday low 1000 mb located over southern
Hudson Bay.

At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over North Dakota.
By 10:30 a.m. EDT Thursday ridge located from Manitoba to
Pennsylvania.

Great Lakes - Lake Huron Area

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