Northern Georgian Bay

Forecast

Marine Forecast

Issued 03:00 AM EST 12 December 2017

Today Tonight and Wednesday.

Gale warning in effect.

Wind variable 15 knots increasing to northeast 30 early this morning and to northeast 35 late this morning. Wind diminishing to north 30 this afternoon and to north 20 Wednesday morning. Wind diminishing to north 15 Wednesday evening.

Periods of snow changing to flurries at times heavy early this evening and ending near noon Wednesday. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Freezing spray beginning this afternoon and ending Wednesday morning.

Waves

Issued 03:00 AM EST 12 December 2017
Today Tonight and Wednesday. Waves one and one half metres building to 2 early this afternoon then subsiding to one Wednesday morning.

Extended Forecast

Issued 03:00 AM EST 12 December 2017
Thursday Wind north 15 knots diminishing to light in the afternoon.
Friday Wind south 15 knots veering to southwest 20.
Saturday Wind west 20 knots.

Ice Forecast*

Issued 12:00 PM EST 11 December 2017 Today Tonight and Tuesday Ice free except 5 tenths of new lake ice along parts of the coast.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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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 Executive 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 EST 11 December 2017 Today Tonight and Tuesday

Ice Coverage

Ice free except 5 tenths of new lake ice along parts of the coast.

Warnings

Warnings (In effect)

Gale warning in effect

Northern Georgian Bay

Issued 03:00 AM EST 12 December 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.

Freezing spray warning in effect

Northern Georgian Bay

Issued 03:00 AM EST 12 December 2017

Moderate or severe freezing spray is 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 EST 12 December 2017 Today Tonight and Wednesday At 3:00 a.m. EST today intensifying trough located on a line
northwest-southeast over Georgian Bay.
By 3:00 a.m. EST Wednesday trough located from Montréal to Lake
Ontario.

At 3:00 a.m. EST today deepening low 1002 mb located near Ohio.
By 3:00 a.m. EST Wednesday deepening low 983 mb located southeast
of Montréal.

By 3:00 a.m. EST Wednesday approaching low 1002 mb located near
South Dakota.

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