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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 14 January 2026

Tonight and Thursday.

Wind north 25 knots diminishing to north 15 near midnight and to variable 10 early Thursday morning. Wind becoming south 10 near noon Thursday then increasing to south 20 Thursday afternoon.

Flurries Thursday late in the day. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending near midnight. Risk of freezing spray Thursday late in the day.

Waves

Issued 06:30 PM EST 14 January 2026
Tonight and Thursday. Waves 2 metres subsiding to 0.5 to 1 near midnight and to 0.5 or less early Thursday morning. Waves building to 0.5 to 1 Thursday afternoon and to 1 to 1.5 Thursday evening.

Extended Forecast

Issued 06:30 PM EST 14 January 2026
Friday Wind southeast 20 knots backing to northeast 15 late in the day.
Saturday Wind northeast 15 knots increasing to northeast 20.
Sunday Wind light increasing to northwest 25 knots late in the day.

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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 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Freezing spray warning in effect

Western Lake Superior

Issued 6:30 PM EST 14 January 2026

Moderate or severe freezing spray is 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 6:30 PM EST 14 January 2026 Tonight and Thursday At 6:30 p.m. EST tonight trough located on a line
northeast-southwest over southern Ontario.
By 6:30 p.m. EST Thursday trough located on a line
northeast-southwest over New Brunswick.

At 6:30 p.m. EST tonight ridge located on a line northeast-southwest
over the Ontario - Minnesota border.
By 6:30 p.m. EST Thursday ridge located on a line
northeast-southwest over Lake Michigan.

At 6:30 p.m. EST tonight warm front located over northwestern
Manitoba.
By 6:30 p.m. EST Thursday warm front located over northwestern
Ontario.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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