Eastern Lake Ontario


Marine Forecast

Issued 06:30 PM EST 24 November 2015

Tonight and Wednesday

Strong wind warning in effect.

Wind west 10 knots increasing to southwest 15 late overnight then diminishing to southwest 10 early Wednesday morning. Wind backing to south 10 late Wednesday morning then increasing to south 20 Wednesday afternoon. Wind increasing to south 25 Wednesday evening.


Issued 06:30 PM EST 24 November 2015
Tonight and Wednesday Waves less than one half metre building to one after midnight.

Extended Forecast

Issued 06:30 PM EST 24 November 2015
Thursday Wind southwest 25 knots.
Friday Wind southwest 25 knots becoming north 25 late in the day.
Saturday Wind north 20 knots diminishing to southwest 15 late in the day.

Stay connected


Weather Conditions

Skip Image

Zoom-in to make a selection

Map of Great Lakes - Lake Erie and Lake Ontario 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
buoy Buoy
land station Land Station
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 (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 6:30 PM EST 24 November 2015

'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.


Technical Marine Synopsis

Issued 6:30 PM EST 24 November 2015 Tonight and Wednesday At 6:30 p.m. EST tonight ridge located on a line north-south over
Lake Ontario.
By 6:30 p.m. EST Wednesday high 1047 mb located over Nova Scotia.

At 6:30 p.m. EST tonight low 1007 mb located over South Dakota.
By 6:30 p.m. EST Wednesday trough located on a line
northeast-southwest over Thunder Bay.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

What we are doing

Date modified: