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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 04 December 2021

Tonight and Sunday.

Gale warning in effect.

Wind northwest 25 knots diminishing to northwest 15 near midnight and to light late overnight. Wind increasing to southeast 15 early Sunday morning and to southeast 20 late Sunday morning. Wind increasing to southeast 35 Sunday afternoon then diminishing to east 30 Sunday evening.

Flurries changing to snow Sunday afternoon. Visibility 1 mile or less in precipitation.

Waves

Issued 06:30 PM EST 04 December 2021
Tonight and Sunday. Waves 1.5 metres subsiding to 1 near midnight and to 0.5 or less late overnight. Waves building to 1 to 1.5 near noon Sunday and to 2 to 3 Sunday evening.

Extended Forecast

Issued 06:30 PM EST 04 December 2021
Monday Wind northeast 30 knots increasing to northwest 35 in the morning then diminishing to northwest 25 late in the day.
Tuesday Wind northwest 25 knots diminishing to northwest 15.
Wednesday Wind west 15 knots backing to south 20 late in the day.

Ice Forecast*

Issued 12:00 PM EST 4 December 2021 Today Tonight and Sunday 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 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 EST 4 December 2021 Today Tonight and Sunday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Gale warning in effect

Eastern Lake Superior

Issued 6:30 PM EST 04 December 2021

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 4 December 2021 Tonight and Sunday At 6:30 p.m. EST tonight departing low 1012 mb located over
northern Vermont.

At 6:30 p.m. EST tonight ridge located on a line northwest-southeast
over northern Illinois.
By 6:30 p.m. EST Sunday ridge located on a line north-south over
New Hampshire.

By 6:30 p.m. EST Sunday approaching low 997 mb located over
eastern Minnesota.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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