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Marine Forecasts for the Great Lakes and St. Lawrence River (On)


* NOTE: Corrected and/or amended bulletins are listed first *

 
FQCN13 CWTO 020700
Marine forecasts for the Canadian portion of the Great Lakes and the
Ontario portion of the St. Lawrence River issued by Environment
Canada at 3:00 a.m. EDT Wednesday 2 July 2025 for today tonight and
Thursday.
The next scheduled forecast will be issued at 10:30 a.m. EDT.

Fog implies visibility less than 1 mile.

Winds are for offshore areas. Nearshore winds may vary considerably
due to shoreline effects.

Note..The strong wind warning program is active from May 01 to
 November 30.

Western Lake Superior.
Wind west 10 knots becoming light near midnight then becoming
 southeast 10 Thursday afternoon. Scattered showers this afternoon
 with a risk of thunderstorms. Fog patches dissipating this
 afternoon.

Eastern Lake Superior.
Wind light becoming southwest 10 knots near noon then becoming light
 near midnight. Wind becoming west 10 Thursday afternoon then
 becoming light Thursday evening. Scattered showers this afternoon
 and this evening with a risk of thunderstorms. Fog patches
 dissipating this afternoon.

Whitefish Bay.
Wind light becoming west 10 knots near noon then becoming light early
 this evening. Wind becoming northwest 10 Thursday afternoon then
 becoming light Thursday evening. Scattered showers this afternoon
 and this evening with a risk of thunderstorms. Fog patches
 dissipating this evening.

Northern Lake Huron.
Wind west 10 knots backing to southwest 10 this morning then
 increasing to west 15 to 20 this evening. Wind veering to northwest
 15 to 20 overnight then becoming northwest 15 Thursday morning. Wind
 diminishing to west 10 near noon Thursday.

Southern Lake Huron.
Wind southwest 10 knots veering to west 10 this evening then
 increasing to northwest 15 Thursday morning. Wind diminishing to
 northwest 10 near noon Thursday then becoming light Thursday
 evening. Scattered showers this afternoon and tonight with a risk of
 thunderstorms.

Georgian Bay.
Wind west 10 knots increasing to southwest 15 near noon and to west
 15 to 20 this evening. Wind veering to northwest 15 to 20 overnight
 then becoming northwest 15 Thursday morning. Wind diminishing to
 west 10 near noon Thursday.

Lake St. Clair.
Wind light becoming west 10 knots this evening then veering to north
 10 Thursday morning. Wind becoming light Thursday afternoon.
 Scattered showers this afternoon and tonight with a risk of
 thunderstorms.

Western Lake Erie.
Wind light becoming southwest 10 knots early this evening then
 veering to west 10 overnight. Wind veering to northwest 10 Thursday
 morning then becoming light Thursday afternoon. Scattered showers
 this afternoon and tonight with a risk of thunderstorms.

Eastern Lake Erie.
Wind light becoming southwest 10 knots this afternoon then veering to
 west 10 overnight. Wind becoming variable 10 Thursday morning then
 becoming southwest 10 Thursday evening. Scattered showers this
 afternoon and tonight with a risk of thunderstorms.

Western Lake Ontario.
Wind west 10 knots backing to southwest 10 this morning then
 increasing to west 15 near midnight. Wind increasing to west 15 to
 20 Thursday morning then becoming west 15 Thursday afternoon. Wind
 diminishing to west 10 Thursday evening. Scattered showers this
 afternoon and this evening with a risk of thunderstorms. Showers
 Thursday late in the day with a risk of thunderstorms.

Eastern Lake Ontario.
Wind west 10 knots increasing to west 15 near noon then backing to
 southwest 15 near midnight. Wind increasing to west 15 to 20
 Thursday morning then becoming west 15 Thursday afternoon. Scattered
 showers this afternoon and this evening with a risk of
 thunderstorms. Showers Thursday late in the day with a risk of
 thunderstorms.

Kingston to Cornwall.
Wind southwest 10 knots increasing to southwest 15 this afternoon
 then diminishing to west 10 overnight. Wind veering to northwest 10
 Thursday morning. Scattered showers this afternoon and this evening
 with a risk of thunderstorms. Showers Thursday late in the day with
 a risk of thunderstorms.

End
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