Western Lake Superior

Forecast

Marine Forecast

Issued 06:30 PM EST 31 January 2015

Tonight and Sunday

Wind north 20 knots diminishing to north 15 near midnight.

Chance of flurries.

Risk of freezing spray tonight.

Waves

Issued 06:30 PM EST 31 January 2015
Tonight and Sunday Over open water waves one to one and one half metres subsiding to one half to one metre late overnight.

Extended Forecast

Issued 06:30 PM EST 31 January 2015
Monday Wind light increasing to west 20 knots late in the day.
Tuesday Wind west 20 knots diminishing to light late in the day.
Wednesday Wind light increasing to northwest 20 knots.

Ice Forecast*

Issued 12:00 PM EST 31 January 2015 Today Tonight and Sunday Open water except consolidated thick lake ice in Black Bay and Nipigon Bay. Areas of 9 tenths of new lake ice including 2 tenths of medium lake ice along the south shore. 9 to 10 tenths of thin lake ice including 4 tenths of medium lake ice along the northwestern shore of Isle Royale. Patches of 8 tenths of new lake ice including 2 tenths of thin lake ice along the northwestern shore east of Thunder Bay.

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

 

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Weather Conditions

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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 Cameron Falls Caribou Island Geraldton Airport 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 31 January 2015 Today Tonight and Sunday

Ice Coverage

Open water except consolidated thick lake ice in Black Bay and Nipigon Bay. Areas of 9 tenths of new lake ice including 2 tenths of medium lake ice along the south shore. 9 to 10 tenths of thin lake ice including 4 tenths of medium lake ice along the northwestern shore of Isle Royale. Patches of 8 tenths of new lake ice including 2 tenths of thin lake ice along the northwestern shore east of Thunder Bay.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 31 January 2015 Tonight and Sunday At 6:30 p.m. EST tonight ridge located on a line northeast-southwest
over eastern Lake Ontario.
By 6:30 p.m. EST Sunday ridge located on a line north-south
over Quebec.

At 6:30 p.m. EST tonight trough located on a line
northeast-southwest over Lake Huron.
By 6:30 p.m. EST Sunday low 1004 mb located over southern Indiana.

At 6:30 p.m. EST tonight high 1042 mb located over Saskatchewan.
By 6:30 p.m. EST Sunday high 1038 mb located over North Dakota.

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