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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 171625 AAA
Updated marine forecasts for the Canadian portion of the Great Lakes
and the Ontario portion of the St. Lawrence River issued by
Environment Canada at 12:25 p.m. EDT Thursday 17 July 2025 for today
tonight and Friday.
The next scheduled forecast will be issued at 6:30 p.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.

Southern Georgian Bay.
Strong wind warning in effect.
Wind northwest 25 knots veering to north 20 early this evening then
 diminishing to northwest 10 near midnight. Wind becoming light near
 noon Friday. Showers this afternoon with a risk of thunderstorms.

Western Lake Erie.
Strong wind warning in effect.
Wind northwest 20 knots veering to north 20 early this evening then
 diminishing to northeast 15 late overnight. Wind diminishing to east
 10 near noon Friday then becoming light Friday evening.

Eastern Lake Erie.
Strong wind warning in effect.
Wind southwest 30 knots with gusts to 35 veering to northwest 25 this
 afternoon then diminishing to north 15 this evening. Wind veering to
 northeast 15 early Friday morning then diminishing to light near
 noon Friday.

Western Lake Ontario.
Strong wind warning in effect.
Wind west 25 knots with gusts to 35 veering to northwest 25 this
 afternoon then diminishing to north 15 near midnight. Wind
 diminishing to northeast 10 early Friday morning then becoming light
 late Friday morning. Scattered showers this afternoon with a risk of
 thunderstorms.

Eastern Lake Ontario.
Strong wind warning in effect.
Wind west 25 knots with gusts to 35 veering to northwest 25 early
 this evening then diminishing to north 15 late overnight. Wind
 diminishing to light Friday morning. Scattered showers this
 afternoon with a risk of thunderstorms.

Remainder unchanged.

End
$$$$^^
FQCN13 CWTO 171430
Marine forecasts for the Canadian portion of the Great Lakes and the
Ontario portion of the St. Lawrence River issued by Environment
Canada at 10:30 a.m. EDT Thursday 17 July 2025 for today tonight and
Friday.
The next scheduled forecast will be issued at 6:30 p.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 light becoming west 10 knots near noon then increasing to west
 15 early this evening. Wind diminishing to southwest 10 early Friday
 morning.

Eastern Lake Superior.
Wind north 15 knots backing to west 15 this afternoon then
 diminishing to southwest 10 near midnight. Wind becoming light
 Friday afternoon. Scattered showers this morning.

Whitefish Bay.
Wind north 15 knots backing to northwest 15 near noon then
 diminishing to light this evening. Wind light Friday. Scattered
 showers this morning.

Northern Lake Huron.
Strong wind warning in effect.
Wind northwest 25 knots diminishing to north 15 early this evening
 and to northwest 10 near midnight. Wind becoming light Friday
 morning. Showers this morning.

Southern Lake Huron.
Strong wind warning in effect.
Wind northwest 25 knots diminishing to north 15 this evening and to
 northeast 10 late overnight. Wind becoming light Friday morning.
 Scattered showers this morning.

Northern Georgian Bay.
Strong wind warning in effect.
Wind north 20 knots diminishing to north 15 early this evening and to
 northwest 10 near midnight. Wind backing to west 10 early Friday
 morning. Showers ending this afternoon with a risk of thunderstorms.

Southern Georgian Bay.
Strong wind warning in effect.
Wind northwest 20 knots veering to north 20 early this evening then
 diminishing to northwest 10 near midnight. Wind becoming light near
 noon Friday. Showers ending this afternoon with a risk of
 thunderstorms.

Lake St. Clair.
Strong wind warning in effect.
Wind west 20 knots diminishing to northwest 15 near noon then veering
 to north 15 early this evening. Wind diminishing to northeast 10
 late overnight then becoming light near noon Friday. Wind becoming
 south 10 Friday evening.

Western Lake Erie.
Strong wind warning in effect.
Wind west 30 knots diminishing to west 20 near noon then veering to
 north 20 early this evening. Wind diminishing to northeast 15 late
 overnight and to east 10 near noon Friday. Wind becoming light
 Friday evening.

Eastern Lake Erie.
Strong wind warning in effect.
Wind southwest 30 knots diminishing to west 20 this afternoon and to
 north 15 this evening. Wind veering to northeast 15 early Friday
 morning then diminishing to light near noon Friday. Scattered
 showers this morning with a risk of thunderstorms.

Western Lake Ontario.
Strong wind warning in effect.
Wind southwest 25 knots veering to northwest 20 early this evening
 then diminishing to north 15 near midnight. Wind diminishing to
 northeast 10 early Friday morning then becoming light late Friday
 morning. Scattered showers ending this afternoon with a risk of
 thunderstorms.

Eastern Lake Ontario.
Strong wind warning in effect.
Wind southwest 20 knots veering to west 25 near noon then to
 northwest 20 this evening. Wind diminishing to north 15 late
 overnight and to light Friday morning. Scattered showers ending this
 evening with a risk of thunderstorms.

Kingston to Cornwall.
Strong wind warning in effect.
Wind southwest 10 knots increasing to southwest 20 near noon then
 diminishing to northwest 15 early this evening. Wind diminishing to
 northwest 10 near midnight then becoming light early Friday morning.
 Scattered showers ending this evening with a risk of thunderstorms.

End
$$$$^^

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