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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 300700
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 30 April 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.

Western Lake Superior.
Wind variable 10 knots increasing to southeast 15 early this morning
 and to southeast 20 this afternoon. Wind diminishing to southeast 15
 this evening and to east 10 Thursday afternoon. Wind becoming light
 Thursday evening.

Eastern Lake Superior.
Wind variable 10 knots increasing to southeast 15 this morning and to
 southeast 20 this afternoon. Wind diminishing to southeast 15 near
 midnight and to variable 10 Thursday afternoon.

Whitefish Bay.
Wind northwest 10 knots becoming light early this morning then
 becoming southeast 15 this evening. Wind diminishing to southeast 10
 Thursday morning then becoming light Thursday afternoon. Scattered
 showers Thursday afternoon and evening.

Northern Lake Huron.
Wind north 15 knots diminishing to variable 10 early this morning
 then becoming southeast 10 near midnight. Wind increasing to east 15
 Thursday morning then backing to northeast 20 Thursday afternoon.
 Showers and fog patches Thursday. Risk of thunderstorms Thursday
 afternoon and evening.

Southern Lake Huron.
Wind north 15 knots diminishing to variable 10 this morning then
 becoming light near midnight. Wind becoming east 15 Thursday morning
 then veering to southeast 15 near noon Thursday. Wind veering to
 south 15 Thursday afternoon except northeast 15 over northern
 sections. Wind diminishing to variable 10 Thursday evening. Showers
 Thursday with a risk of thunderstorms. Fog patches forming near noon
 Thursday.

Northern Georgian Bay.
Wind north 15 knots diminishing to variable 10 early this morning
 then becoming light early this evening. Wind becoming southeast 10
 overnight then increasing to east 15 near noon Thursday. Wind
 backing to northeast 20 Thursday afternoon. Showers and fog patches
 Thursday afternoon and evening.

Southern Georgian Bay.
Wind north 15 knots diminishing to variable 10 early this morning
 then becoming light early this evening. Wind becoming southeast 10
 overnight then increasing to east 15 near noon Thursday. Wind
 veering to southeast 20 Thursday evening. Showers and fog patches
 Thursday afternoon and evening with a risk of thunderstorms.

Lake St. Clair.
Wind north 10 knots becoming light this morning then becoming east 10
 near midnight. Wind increasing to southeast 15 Thursday morning then
 veering to southwest 15 near noon Thursday. Showers Thursday with a
 risk of thunderstorms. Fog patches forming near noon Thursday.

Western Lake Erie.
Wind north 15 knots diminishing to variable 10 this morning then
 becoming east 10 early this evening. Wind increasing to east 15 near
 midnight then veering to southeast 15 Thursday morning. Wind veering
 to southwest 15 Thursday afternoon. Showers and fog patches Thursday
 with a risk of thunderstorms.

Eastern Lake Erie.
Wind north 10 knots becoming variable 10 this morning then becoming
 northeast 10 near midnight. Wind increasing to east 15 Thursday
 morning then becoming southwest 15 Thursday evening. Scattered
 showers Thursday with a risk of thunderstorms. Fog patches forming
 Thursday evening.

Western Lake Ontario.
Wind northwest 15 knots diminishing to variable 10 this morning then
 becoming northeast 10 near midnight. Wind increasing to northeast 15
 Thursday morning then veering to east 20 Thursday afternoon. Wind
 diminishing to variable 10 Thursday evening. Showers Thursday
 afternoon and evening with a risk of thunderstorms. Fog patches
 forming Thursday evening.

Eastern Lake Ontario.
Wind northwest 15 knots diminishing to variable 10 this morning then
 becoming east 10 overnight. Wind increasing to east 15 Thursday
 morning and to east 20 Thursday afternoon. Wind veering to south 15
 Thursday evening. Scattered showers Thursday late in the day with a
 risk of thunderstorms.

Kingston to Cornwall.
Wind northwest 15 knots diminishing to northwest 10 early this
 morning then becoming light near noon. Wind becoming northeast 10
 Thursday afternoon. Scattered showers Thursday evening.

End
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