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Western Lake Superior


Marine Forecast

Issued 03:00 AM EDT 15 June 2024

Today Tonight and Sunday.

Strong wind warning in effect.

Wind light becoming south 15 knots early this morning then backing to southeast 15 near noon. Wind increasing to south 15 to 20 this evening then backing to southeast 20 overnight. Wind diminishing to southeast 15 Sunday evening.

Rain beginning overnight changing to scattered showers Sunday afternoon with a risk of thunderstorms. Fog patches forming overnight.


Issued 03:00 AM EDT 15 June 2024
Today Tonight and Sunday. Waves 0.5 metres or less building to 0.5 to 1 this morning and to 1 to 1.5 overnight. Waves subsiding to 0.5 to 1 Sunday evening.

Extended Forecast

Issued 03:00 AM EDT 15 June 2024
Monday Wind south 15 knots diminishing to light in the afternoon.
Tuesday Wind light increasing to south 20 knots late in the day.
Wednesday Wind south 20 knots.

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Map of Great Lakes - Lake Superior marine weather areas Mid Superior - 45001 East Superior - 45004 West Superior - 45006 Slate Island - 45136 Lake Of the Woods - 45148 Kenora Airport Royal Island Armstrong Airport Caribou Island Marathon Airport Pukaskwa National Park Thunder Bay Airport Welcome Island Little Flatland Island Sault Ste. Marie Airport Wawa 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 (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 03:00 AM EDT 15 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.


Technical Marine Synopsis

Issued 3:00 AM EDT 15 June 2024 Today Tonight and Sunday At 3:00 a.m. EDT today high 1022 mb located over northeastern
By 3:00 a.m. EDT Sunday high 1024 mb located over eastern Ontario.

By 3:00 a.m. EDT Sunday low 993 mb located over North Dakota.

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