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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 09 May 2025

Today Tonight and Saturday.

Strong wind warning in effect.

Wind light becoming south 10 knots this morning then becoming variable 10 this afternoon. Wind increasing to north 20 near midnight then diminishing to north 15 near noon Saturday. Wind diminishing to northwest 10 Saturday evening.

Scattered showers tonight.

Waves

Issued 03:00 AM EDT 09 May 2025
Today Tonight and Saturday. Waves 0.5 metres or less building to 1 near midnight then subsiding to 0.5 or less Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 09 May 2025
Sunday Wind light increasing to south 20 knots in the morning.
Monday Wind south 15 knots.
Tuesday Wind south 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 8 May 2025 Today Tonight and Friday Ice free.

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

 

[ Canadian Ice Service ]

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Map of Great Lakes - Lake Superior marine weather areas Pukaskwa National Park Marathon Airport Caribou Island Armstrong Airport Royal Island Kenora Airport Thunder Bay Airport Welcome Island Lake Of the Woods - 45148 Little Flatland Island Sault Ste. Marie Airport Wawa Airport Slate Island - 45136
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 8 May 2025 Today Tonight and Friday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Superior

Issued 03:00 AM EDT 09 May 2025

'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 3:00 AM EDT 9 May 2025 Today Tonight and Saturday At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over Lake Superior.
By 3:00 a.m. EDT Saturday ridge located on a line
northeast-southwest over southwestern Ontario.

At 3:00 a.m. EDT today cold front located over the Ontario -
Manitoba border.
By 3:00 a.m. EDT Saturday cold front located from James Bay to
Whitefish Bay.

Great Lakes - Lake Superior Area

Another Region

Marine Weather for Canada

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