Western Lake Ontario

Forecast

Marine Forecast

Issued 03:00 AM EDT 21 August 2017

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind southwest 10 knots backing to south 10 near midnight then increasing to southwest 20 Tuesday morning. Wind veering to west 20 Tuesday evening.

A few showers beginning near noon Tuesday with a risk of thunderstorms. Visibility 1 mile or less in showers.

Waves

Issued 03:00 AM EDT 21 August 2017
Today Tonight and Tuesday. Waves one half metre or less building to one near noon Tuesday.

Extended Forecast

Issued 03:00 AM EDT 21 August 2017
Wednesday Wind west 25 knots diminishing to northwest 15 in the afternoon.
Thursday Wind northwest 15 knots diminishing to 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

Western Lake Ontario

Issued 03:00 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 3:00 AM EDT 21 August 2017 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge located on a line north-south over
Montréal.
By 3:00 a.m. EDT Tuesday ridge located on a line northeast-southwest
over the East Coast of the U.S.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over eastern Lake Superior.
By 3:00 a.m. EDT Tuesday trough located on a line east-west over
New Brunswick.

At 3:00 a.m. EDT today low 1010 mb located over Colorado.
By 3:00 a.m. EDT Tuesday low 1006 mb located over northern Lake
Michigan.

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