Western Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EST 04 December 2016

Today Tonight and Monday

Wind east 15 knots veering to south 20 this morning then to southwest 15 near midnight. Wind veering to west 15 Monday morning then diminishing to southwest 10 Monday evening.

A few flurries or showers beginning early this morning changing to periods of snow or rain near noon then to chance of showers or flurries overnight and Monday morning.

Waves

Issued 03:00 AM EST 04 December 2016
Today Tonight and Monday Waves less than one half metre building to one early this morning then subsiding to one half metre Monday evening.

Extended Forecast

Issued 03:00 AM EST 04 December 2016
Tuesday Wind light increasing to southeast 20 knots in the morning.
Wednesday Wind west 30 knots.
Thursday Wind north 25 knots.

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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 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 EDT 7 May 2016 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 4 December 2016 Today Tonight and Monday At 3:00 a.m. EST today ridge located on a line north-south over
Lake Erie.
By 3:00 a.m. EST Monday ridge located on a line northwest-southeast
over Quebec.

At 3:00 a.m. EST today trough located on a line north-south over
western Manitoba.
By 3:00 a.m. EST Monday trough located on a line northwest-southeast
over Lake Superior.

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