Cornwall to Montréal


Marine Forecast

Issued 03:00 AM EDT 17 August 2018

Today Tonight and Saturday.

Wind light increasing to easterly 15 knots late this morning and to northeast 15 to 20 overnight. Wind diminishing to light Saturday afternoon.

Showers beginning early this morning and ending overnight. Risk of thunderstorms today and early this evening.

Extended Forecast

Issued 06:00 PM EDT 16 August 2018
Saturday Wind north 10 to 15 knots.
Sunday Wind light.
Monday Wind light.

Stay connected


Weather Conditions

Skip Image

Zoom-in to make a selection

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 Killarney 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 Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
buoy Buoy
land station Land Station
Ice Conditions

Access this Bulletin from another source?


No watches or warnings in effect.


Technical Marine Synopsis

Issued 3:00 AM EDT 17 August 2018 Today Tonight and Saturday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over Maine.

At 3:00 a.m. EDT today low 1012 mb located near Lake Huron.
By 8:00 p.m. EDT Saturday low 1008 mb located over Nova Scotia.

At 3:00 a.m. EDT today high 1025 mb located over northwestern
By 8:00 p.m. EDT Saturday high 1019 mb located over northern Quebec.

Great Lakes - Lake Huron Area

Another Region

What we are doing


UV Index and sun protection

Play it safe!

Extreme Heat Protection

Be weather wise!

Lightning Safety

When thunder roars, GO INDOORS!

Date modified: