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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 16 May 2026

Today Tonight and Sunday.

Strong wind warning in effect.

Wind west 15 knots veering to north 15 early this evening then to northeast 15 late overnight. Wind increasing to east 20 Sunday evening.

Scattered showers Sunday evening with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 16 May 2026
Today Tonight and Sunday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 near noon and to 0.5 or less early Sunday morning.

Extended Forecast

Issued 03:00 AM EDT 16 May 2026
Monday Wind southeast 25 knots diminishing to light in the morning then increasing to northeast 20 late in the day.
Tuesday Wind northeast 25 knots backing to northwest 25.
Wednesday Wind northwest 20 knots.

Ice Forecast*

Issued 12:00 PM EDT 16 May 2026 Today Tonight and Sunday Ice free.These are the last forecasts for the season.

*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 Kenora Airport Pukaskwa National Park Royal Island Armstrong Airport Caribou Island Marathon Airport Thunder Bay Airport Welcome Island Little Flatland Island Sault Ste. Marie Airport Wawa Airport Slate Island - 45136 Lake Of the Woods - 45148
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buoy Buoy
land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 16 May 2026 Today Tonight and Sunday

Ice Coverage

Ice free.

These are the last forecasts for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 10:30 AM EDT 16 May 2026

'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 16 May 2026 Today Tonight and Sunday At 10:30 a.m. EDT today low 986 mb located over eastern Hudson Bay.
By 10:30 a.m. EDT Sunday departing low 988 mb located over northern
Quebec.

At 10:30 a.m. EDT today ridge located on a line north-south over
Saskatchewan.
By 10:30 a.m. EDT Sunday ridge located on a line northwest-southeast
over northern Ontario.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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