Western Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EST 11 December 2016

Today Tonight and Monday

Wind light increasing to northeast 15 knots early this morning and to northeast 20 near noon. Wind diminishing to northeast 15 overnight then becoming west 15 near noon Monday.

Flurries beginning this morning. Visibility 1 mile or less in flurries.

Waves

Issued 03:00 AM EST 11 December 2016
Today Tonight and Monday Waves one half metre or less building to one and one half metres this afternoon then subsiding to one Monday morning.

Extended Forecast

Issued 03:00 AM EST 11 December 2016
Tuesday Wind northwest 25 knots increasing to northwest 35 in the afternoon.
Wednesday Wind northwest 35 knots.
Thursday Wind northwest 35 knots diminishing to northwest 20.

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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 11 December 2016 Today Tonight and Monday At 3:00 a.m. EST today dissipating trough located on a line
northwest-southeast over North Channel.

At 3:00 a.m. EST today ridge located from Lake Nipigon to Maine
then to Virginia.
By 3:00 a.m. EST Monday ridge located on a line northwest-southeast
over New Brunswick.

At 3:00 a.m. EST today low 1007 mb located over Kansas.
By 3:00 a.m. EST Monday low 1003 mb located near Sault Ste. Marie.

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