Western Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EST 15 December 2017

Today Tonight and Saturday.

Wind north 20 knots diminishing to north 15 early this evening and to northeast 10 near midnight. Wind veering to east 10 Saturday morning then increasing to southeast 15 Saturday afternoon.

Flurries changing to chance of flurries overnight and Saturday. Visibility 1 mile or less in flurries.

Waves

Issued 03:00 AM EST 15 December 2017
Today Tonight and Saturday. Waves one and one half metres subsiding to one this evening and to one half metre overnight. Waves building to one Saturday evening.

Extended Forecast

Issued 03:00 AM EST 15 December 2017
Sunday Wind south 15 knots.
Monday Wind light increasing to southwest 20 knots.
Tuesday Wind west 30 knots increasing to northwest 35.

Ice Forecast*

Issued 12:00 PM EST 14 December 2017 Today Tonight and Friday Open water except 9 plus tenths medium lake ice in Black Bay. 9 plus tenths thin lake ice including 3 tenths medium lake ice in western Nipigon Bay. Elsewhere 8 tenths thin lake ice along parts of the shore.

*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 14 December 2017 Today Tonight and Friday

Ice Coverage

Open water except 9 plus tenths medium lake ice in Black Bay. 9 plus
tenths thin lake ice including 3 tenths medium lake ice in western
Nipigon Bay. Elsewhere 8 tenths thin lake ice along parts of the
shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 15 December 2017 Today Tonight and Saturday At 3:00 a.m. EST today quasi-stationary ridge located on a line
northwest-southeast over northwestern Ontario.

At 3:00 a.m. EST today low 1007 mb located over Lake Superior.
By 3:00 a.m. EST Saturday low 1007 mb located north of Ottawa.

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