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Government of Canada / Gouvernement du Canada

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


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

 
FQCN13 CWTO 190700
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 Thursday 19 March 2026 for today tonight and
Friday.
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 north 10 knots becoming light near noon then increasing to
 southeast 15 this evening. Wind increasing to southeast 20 near
 midnight then becoming north 20 Friday morning. Wind diminishing to
 northwest 10 near noon Friday then backing to southwest 10 Friday
 evening. Snow tonight with a risk of freezing rain changing to
 scattered showers or scattered flurries and ending Friday morning.
 Visibility 1 mile or less in snow.

Eastern Lake Superior.
Wind northwest 15 knots veering to north 15 early this morning then
 diminishing to light near noon. Wind increasing to southeast 15 this
 evening and to southeast 25 near midnight. Wind veering to south 25
 Friday morning then diminishing to north 20 near noon Friday. Wind
 diminishing to northwest 10 Friday afternoon then backing to west 10
 Friday evening. Scattered flurries ending early this morning. Snow
 beginning near midnight with a risk of freezing rain and changing to
 scattered showers or scattered flurries Friday morning and ending
 Friday morning. Visibility 1 mile or less in snow.

Whitefish Bay.
Wind southwest 10 knots increasing to northwest 15 this morning then
 diminishing to light this afternoon. Wind increasing to southeast 15
 near midnight and to southeast 20 overnight. Wind diminishing to
 light Friday morning then becoming northwest 10 Friday evening.
 Flurries ending early this morning with a risk of freezing drizzle.
 Snow beginning near midnight with a risk of freezing rain and
 changing to scattered showers or scattered flurries Friday morning
 and ending Friday morning. Visibility 1 mile or less in
 precipitation.

Northern Lake Huron.
Wind southwest 15 knots veering to west 15 early this morning then
 diminishing to northwest 10 early this evening. Wind becoming light
 late this evening then increasing to south 20 overnight. Wind
 backing to southeast 15 Friday morning then becoming northwest 15
 near noon Friday. Wind diminishing to variable 10 Friday evening.
 Periods of snow ending early this morning. Rain beginning near
 midnight with a risk of freezing rain and changing to scattered
 showers Friday morning and ending near noon Friday. Visibility as
 low as 1 mile in precipitation.

Southern Lake Huron.
Wind southwest 15 knots diminishing to west 10 early this morning
 then veering to northwest 10 early this evening. Wind becoming light
 late this evening then increasing to south 20 overnight. Wind
 veering to southwest 25 Friday morning then diminishing to northwest
 15 near noon Friday. Wind diminishing to north 10 Friday evening.
 Periods of snow early this morning changing to scattered showers or
 scattered flurries and ending this evening. Rain Friday morning.
 Scattered showers Friday afternoon. Visibility as low as 1 mile in
 snow.

Northern Georgian Bay.
Wind southwest 15 knots diminishing to west 10 early this morning
 then increasing to west 15 near noon. Wind diminishing to light this
 evening then increasing to southeast 20 Friday morning. Wind
 diminishing to southeast 10 near noon Friday then becoming northwest
 10 Friday afternoon. Wind becoming light Friday evening. Periods of
 snow ending early this morning. Snow beginning overnight with a risk
 of freezing rain and changing to scattered showers or scattered
 flurries Friday morning and ending near noon Friday. Visibility 1
 mile or less in snow.

Southern Georgian Bay.
Wind southwest 15 knots veering to west 15 early this morning then
 diminishing to west 10 early this evening. Wind becoming light late
 this evening then increasing to southeast 20 Friday morning. Wind
 diminishing to west 10 near noon Friday then increasing to northwest
 15 Friday afternoon. Wind diminishing to light Friday evening.
 Periods of snow ending early this morning. Rain beginning overnight
 with a risk of freezing rain and changing to scattered showers near
 noon Friday and ending Friday afternoon. Visibility 1 mile or less
 in precipitation.

Lake St. Clair.
Wind light becoming southeast 10 knots near midnight then increasing
 to southwest 15 Friday morning. Wind diminishing to northwest 10
 Friday afternoon then becoming light Friday evening. Scattered
 showers or scattered flurries ending near noon. Scattered showers
 Friday. Fog patches forming this evening and dissipating Friday
 morning.

Western Lake Erie.
Wind southwest 10 knots becoming light this morning then becoming
 southeast 10 near midnight. Wind increasing to southwest 20 Friday
 morning then diminishing to southwest 15 Friday afternoon. Wind
 diminishing to light Friday evening. Scattered flurries or scattered
 showers this morning changing to scattered showers and ending near
 noon. Scattered showers Friday.

Eastern Lake Erie.
Wind southwest 15 knots diminishing to southwest 10 early this
 evening then becoming light near midnight. Wind increasing to
 southwest 20 Friday morning then diminishing to west 10 Friday
 evening. Scattered flurries this morning becoming scattered showers
 or scattered flurries and ending this afternoon. Scattered showers
 Friday.

Western Lake Ontario.
Wind southwest 15 knots diminishing to southwest 10 early this
 evening then becoming light late this evening. Wind increasing to
 southeast 15 Friday morning then veering to southwest 20 near noon
 Friday. Wind diminishing to northwest 10 Friday evening. Periods of
 snow ending early this morning. Rain Friday morning and afternoon
 with a risk of freezing rain Friday morning changing to scattered
 showers. Visibility as low as 1 mile in rain.

Eastern Lake Ontario.
Wind south 15 knots veering to southwest 15 near noon then
 diminishing to west 10 this evening. Wind becoming light near
 midnight then increasing to southeast 15 Friday morning. Wind
 veering to south 20 near noon Friday then diminishing to north 15
 Friday evening. Periods of snow changing to scattered showers or
 scattered flurries near noon and ending this evening. Snow Friday
 morning with a risk of freezing rain. Rain Friday afternoon.
 Scattered showers Friday evening. Visibility as low as 1 mile in
 snow.

Kingston to Cornwall.
Wind south 10 knots increasing to southwest 15 near noon then
 diminishing to west 10 this evening. Wind becoming light near
 midnight then becoming south 15 near noon Friday. Wind diminishing
 to northeast 10 Friday afternoon. Periods of snow changing to
 scattered showers or scattered flurries this afternoon and ending
 this evening. Snow or rain Friday. Visibility as low as 1 mile in
 snow.

End
$$$$^^

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