Eastern Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EDT 21 August 2017

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind southwest 10 knots becoming light near noon then becoming north 15 near midnight. Wind backing to northwest 15 Tuesday morning then increasing to northwest 20 Tuesday afternoon.

Rain overnight and Tuesday morning with a risk of thunderstorms. Chance of showers beginning Tuesday evening with a risk of thunderstorms. Fog patches dissipating near midnight.

Waves

Issued 10:30 AM EDT 21 August 2017
Today Tonight and Tuesday. Waves one half metre or less building to one Tuesday evening.

Extended Forecast

Issued 03:00 AM EDT 21 August 2017
Wednesday Wind northwest 20 knots.
Thursday Wind light.
Friday Wind light.

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Map of Great Lakes - Lake Huron marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Port Weller St. Catharines Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Municipal Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport Killarney Western Islands Cove Island Long Point Port Colborne Erieau Point Pelee
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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

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Superior

Issued 10:30 AM EDT 21 August 2017

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 21 August 2017 Today Tonight and Tuesday At 10:30 a.m. EDT today departing ridge located on a line
north-south over New England.

At 10:30 a.m. EDT today trough located on a line northeast-southwest
over eastern Lake Superior.
By 10:30 a.m. EDT Tuesday trough located on a line
northeast-southwest over Lake Huron.

At 10:30 a.m. EDT today low 1010 mb located over Colorado.
By 10:30 a.m. EDT Tuesday deepening low 1006 mb located over
northern Lake Huron.

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