Lake Superior

Forecast

Marine Forecast

Issued 06:30 PM EDT 04 September 2015

Tonight and Saturday

Wind light becoming southeast 15 knots this evening then diminishing to southeast 10 late overnight. Wind increasing to southeast 15 Saturday evening.

Chance of showers Saturday afternoon and evening. Fog patches forming near midnight.

Waves

Issued 06:30 PM EDT 04 September 2015
Tonight and Saturday Waves less than one half metre building to one half metre near midnight.

Extended Forecast

Issued 06:30 PM EDT 04 September 2015
Sunday Wind light becoming south 15 knots in the morning.
Monday Wind west 15 knots.
Tuesday Wind light.

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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 1 June 2015 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 4 September 2015 Tonight and Saturday At 6:30 p.m. EDT tonight high 1024 mb located over southern Quebec.
By 6:30 p.m. EDT Saturday high 1024 mb located east of New England.

At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over the Ontario - Manitoba border.
By 6:30 p.m. EDT Saturday trough located on a line
northeast-southwest over Lake Nipigon.

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