Eastern Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EDT 30 April 2017

Today Tonight and Monday

Gale warning in effect.

Wind northeast 10 knots increasing to northeast 15 early this evening and to northeast 20 near midnight. Wind increasing to east 35 early Monday morning then diminishing to east 20 Monday afternoon. Wind veering to south 15 Monday evening.

Rain beginning late overnight.

Waves

Issued 10:30 AM EDT 30 April 2017
Today Tonight and Monday Waves one half metre or less building to 2 late overnight and to 4 Monday morning. Waves subsiding to 2 Monday evening.

Extended Forecast

Issued 03:00 AM EDT 30 April 2017
Tuesday Wind northeast 25 knots diminishing to northwest 15 late in the day.
Wednesday Wind light.
Thursday Wind south 15 knots diminishing to 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)

Gale warning in effect

Eastern Lake Superior

Issued 2:35 PM EDT 30 April 2017

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 30 April 2017 Today Tonight and Monday At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over James Bay.
By 10:30 a.m. EDT Monday ridge located on a line northwest-southeast
over the Gulf of St. Lawrence.

At 10:30 a.m. EDT today low 996 mb located over Kansas.
By 10:30 a.m. EDT Monday low 989 mb located over Wisconsin.

At 10:30 a.m. EDT today trough from low located on a line east-west
over Lake Erie.
By 10:30 a.m. EDT Monday trough from low located on a line east-west
over Ottawa.

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