Western Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EST 18 November 2017

Today Tonight and Sunday.

Strong wind warning in effect.

Wind north 20 knots increasing to north 25 early this evening then backing to northwest 20 early Sunday morning. Wind diminishing to northwest 15 near noon Sunday then backing to west 15 Sunday evening.

Flurries beginning early this evening and ending near noon Sunday.

Risk of freezing spray overnight and Sunday morning.

Waves

Issued 10:30 AM EST 18 November 2017
Today Tonight and Sunday. Waves one metre building to 2 near noon then subsiding to one Sunday morning.

Extended Forecast

Issued 03:00 AM EST 18 November 2017
Monday Wind northwest 15 knots backing to southwest 20 in the afternoon then increasing to southwest 30 late in the day.
Tuesday Wind southwest 30 knots increasing to northwest 35.
Wednesday Wind northwest 20 knots.

Ice Forecast*

Issued 12:00 PM EST 18 November 2017 Today Tonight and Sunday Ice free except 8 tenths of new lake ice including 2 tenths of thin lake ice in Black Bay.

*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 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 Kenora Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EST 18 November 2017 Today Tonight and Sunday

Ice Coverage

Ice free except 8 tenths of new lake ice including 2 tenths of thin
lake ice in Black Bay.

Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 10:30 AM EST 18 November 2017

'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 EST 18 November 2017 Today Tonight and Sunday At 10:30 a.m. EST today low 994 mb located over central Illinois.
By 10:30 a.m. EST Sunday low 985 mb located south of Montréal.

By 10:30 a.m. EST Sunday approaching ridge located on a line
northeast-southwest over western Lake Superior.

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