Western Lake Superior

Forecast

Marine Forecast

Issued 06:30 PM EDT 28 April 2017

Tonight and Saturday

Wind northwest 20 knots diminishing to northwest 10 Saturday morning then becoming light Saturday evening.

Waves

Issued 06:30 PM EDT 28 April 2017
Tonight and Saturday Waves one and one half metres subsiding to one this evening and to one half metre or less Saturday morning.

Extended Forecast

Issued 06:30 PM EDT 28 April 2017
Sunday Wind northeast 15 knots.
Monday Wind northeast 15 knots increasing to northeast 25.
Tuesday Wind northeast 25 knots diminishing to northwest 15.

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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 27 April 2017 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 28 April 2017 Tonight and Saturday At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over central Lake Superior.
By 6:30 p.m. EDT Saturday trough located on a line
northeast-southwest over New Brunswick.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over southern Saskatchewan.
By 6:30 p.m. EDT Saturday ridge located on a line
northwest-southeast over northern Ontario.

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