fzus61 kbuf 150208
glflo 
expires:202604150900;;382377

open lake forecast for lake ontario
national weather service buffalo ny
1008 pm edt tue apr 14 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a 29.6 inch low just to the north of new england will 
continue to weaken as it slides eastward. a 29.6 inch low will move 
into the central great lakes wednesday night before reaching 
southern quebec thursday night, then drifting off the new england 
coast by friday night. a 30.0 inch high is then forecast to build 
from the central great lakes friday to the lower great lakes 
saturday morning, then off the east coast saturday night. a 29.3 
inch surface low to the north of lake superior saturday will deepen 
to 28.9 inches by sunday...with a trailing cold front crossing the 
lake saturday night.


loz062-150900-
lake ontario open waters from the niagara river to hamlin beach-
1008 pm edt tue apr 14 2026

.overnight...northwest winds 5 to 10 knots becoming east.
showers with a chance of thunderstorms late. waves 1 to 3 feet. 
.wednesday...southeast winds 10 to 15 knots becoming southwest.
showers with a chance of thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon. waves 1 to
3 feet. 
.wednesday night...south winds 10 to 15 knots becoming southwest.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots. showers likely in the
morning, then showers likely with a chance of thunderstorms in
the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west.
showers likely with a chance of thunderstorms in the evening,
then a chance of showers overnight. waves 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming southeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...southeast winds 5 to 15 knots becoming southwest and
increasing to 15 to 25 knots. showers likely. waves 2 feet or
less building to 4 to 7 feet. waves occasionally around 9 feet. 
.sunday...west winds to 30 knots. a chance of rain showers. waves
5 to 9 feet building to 7 to 10 feet. waves occasionally around
13 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 150208
glflo 
expires:202604150900;;382378

open lake forecast for lake ontario
national weather service buffalo ny
1008 pm edt tue apr 14 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a 29.6 inch low just to the north of new england will 
continue to weaken as it slides eastward. a 29.6 inch low will move 
into the central great lakes wednesday night before reaching 
southern quebec thursday night, then drifting off the new england 
coast by friday night. a 30.0 inch high is then forecast to build 
from the central great lakes friday to the lower great lakes 
saturday morning, then off the east coast saturday night. a 29.3 
inch surface low to the north of lake superior saturday will deepen 
to 28.9 inches by sunday...with a trailing cold front crossing the 
lake saturday night.


loz063>065-150900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1008 pm edt tue apr 14 2026

.overnight...northwest winds 5 to 10 knots becoming
southeast. a chance of showers and thunderstorms late. waves 1 to
3 feet. 
.wednesday...southeast winds 5 to 15 knots becoming west. showers
with a chance of thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon. waves 2 feet or less.
.wednesday night...southwest winds 5 to 10 knots. showers with a
chance of thunderstorms in the evening, then showers overnight.
waves 1 to 2 feet. 
.thursday...southwest winds around 10 knots. showers likely in
the morning, then showers likely with a chance of thunderstorms
in the afternoon. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 10 knots becoming west.
showers likely with a chance of thunderstorms in the evening,
then showers likely overnight. waves 1 to 2 feet. 
.friday...northwest winds 5 to 10 knots becoming northeast. a
chance of showers. waves 1 foot or less. 
.saturday...southeast winds 5 to 15 knots becoming southwest and
increasing to 15 to 25 knots. a chance of showers during the day,
then showers likely saturday night. waves 2 feet or less building
to 4 to 7 feet. waves occasionally around 9 feet. 
.sunday...southwest winds to 30 knots becoming west. rain showers
likely during the day, then a chance of rain and snow showers
sunday night. waves 6 to 10 feet building to 9 to 12 feet. waves
occasionally around 15 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150752
glfle 
expires:202604151430;;396760

open lake forecast for lake erie
national weather service cleveland oh
352 am edt wed apr 15 2026

for waters beyond five nautical miles of shore on lake erie

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...
a frontal boundary will remain stalled to the north of lake erie
through today before pushing south across the lake on thursday. a
ridge averaging 30.00 inches will briefly build over the lake on 
friday and a cold front will move east across the lake on saturday
as low pressure 29.50 inches lifts northeast across the northern 
great lakes. a trough averaging 29.90 inches will move east across 
lake erie on sunday.


lez162>165-151430-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
352 am edt wed apr 15 2026

...severe thunderstorm watch 118 in effect until 5 am edt early
this morning...

.today...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms early, then a chance of showers and
thunderstorms. showers with a chance of thunderstorms late. waves
1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms early, then showers with a chance of
thunderstorms. showers likely with a slight chance of
thunderstorms late. waves 1 to 2 feet. 
.thursday...south winds 10 to 15 knots becoming southwest.
showers. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 1 to 2 feet. 
.friday...northwest winds 5 to 15 knots becoming southeast. a
chance of showers friday night. waves 2 feet or less. 
.saturday...south winds 15 to 25 knots becoming west. showers
with a chance of thunderstorms during the day, then a chance of
showers saturday night. waves 2 to 4 feet building to 3 to
6 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain showers during the day. waves 3 to 6 feet building to
4 to 7 feet, then subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150752
glfle 
expires:202604151430;;396761

open lake forecast for lake erie
national weather service cleveland oh
352 am edt wed apr 15 2026

for waters beyond five nautical miles of shore on lake erie

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...
a frontal boundary will remain stalled to the north of lake erie
through today before pushing south across the lake on thursday. a
ridge averaging 30.00 inches will briefly build over the lake on 
friday and a cold front will move east across the lake on saturday
as low pressure 29.50 inches lifts northeast across the northern 
great lakes. a trough averaging 29.90 inches will move east across 
lake erie on sunday.


lez061-166>169-151430-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
352 am edt wed apr 15 2026

.today...southwest winds 10 to 15 knots. showers and
thunderstorms likely this morning, then showers with a chance of
thunderstorms this afternoon. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms in the evening, then showers with a
slight chance of thunderstorms after midnight. waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots. showers likely in the
morning, then showers in the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 10 knots becoming west.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 1 to 2 feet. 
.friday...west winds 5 to 15 knots becoming southeast. waves
2 feet or less. 
.saturday...south winds 15 to 20 knots becoming west. showers
likely during the day, then a chance of showers saturday night.
waves 2 to 4 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain showers during the day. waves 5 to 8 feet subsiding to
3 to 6 feet. waves occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 150104
glfsc 
expires:202604150915;;380214

lake st clair forecast
national weather service detroit/pontiac mi
904 pm edt tue apr 14 2026

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a line of showers and thunderstorms will track east-
southeast across the great lakes late tonight, with potential for
strong to severe storms. additional lows through the week
maintain shower and storm chances into the weekend.


lcz460-150915-
lake st clair-
904 pm edt tue apr 14 2026

...tornado watch 113 in effect until 4 am edt wednesday...

.rest of tonight...south winds 5 to 10 knots becoming southwest 10
to 15 knots after midnight. showers likely this evening. a chance of
thunderstorms. rain showers after midnight. waves 2 feet or less.
.wednesday...southwest winds 10 to 15 knots. mostly cloudy. a chance
of light showers until late afternoon. a chance of thunderstorms in
the afternoon. light showers likely late in the afternoon. waves 2
feet or less.
.wednesday night...southwest winds 10 to 15 knots. showers and a
chance of thunderstorms ...then light showers likely after midnight.
waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots. mostly cloudy. light
showers likely early in the morning...then a chance of light showers
in the late morning and early afternoon. light showers likely and a
chance of thunderstorms early in the afternoon. waves 2 feet or
less.
.thursday night...southwest winds 10 to 15 knots becoming west 5 to
10 knots in the late evening and overnight. mostly cloudy. a chance
of thunderstorms early in the evening. a chance of light showers .
waves 2 feet or less.
.friday...northwest winds 5 to 10 knots veering to the northeast in
the afternoon...then veering to the southeast in the evening. mostly
cloudy in the morning becoming partly cloudy. waves 2 feet or less.
.saturday...west winds 20 to 25 knots. light showers and a chance of
thunderstorms. waves 2 to 4 feet.
.sunday...northwest winds to 30 knots. partly cloudy. a chance of
light showers. waves 2 to 4 feet. a small craft advisory may be
needed.

$$

fzus63 kdtx 150103
glflh 
expires:202604150915;;380131

open lake forecast for lake huron
national weather service detroit/pontiac mi
903 pm edt tue apr 14 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a line of showers and thunderstorms will track east-
southeast across the great lakes late tonight, with potential for
strong to severe storms. additional lows through the week
maintain shower and storm chances into the weekend.


lhz363-462>464-150915-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
903 pm edt tue apr 14 2026

.rest of tonight...east winds 5 to 10 knots. a chance of showers
and thunderstorms this evening...then showers likely and a chance
of thunderstorms after midnight. waves 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots backing to the east late
in the afternoon. a chance of showers in the afternoon. waves
1 to 3 feet. 
.wednesday night...east winds 5 to 10 knots veering to the
southeast by midnight...then backing to the southeast 5 to
10 knots after midnight. showers likely. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.thursday night...north winds 5 to 10 knots. a chance of showers
in the evening. waves 1 to 3 feet. 
.friday...north winds 5 to 10 knots veering to the northeast late
in the afternoon...then becoming southeast 10 to 15 knots late in
the evening. waves 1 to 3 feet building to 3 to 5 feet late in
the evening. 
.saturday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then
decreasing to 15 to 20 knots early in the evening becoming west
20 to 25 knots by midnight. showers in the late morning and early
afternoon. a chance of showers . waves 6 to 9 feet. waves
occasionally around 12 feet. 
.sunday...west winds 20 to 25 knots veering to the northwest by
midnight. gusts to 30 knots. waves 8 to 12 feet. waves
occasionally around 15 feet. 


$$

fzus63 kdtx 150103
glflh 
expires:202604150915;;380130

open lake forecast for lake huron
national weather service detroit/pontiac mi
903 pm edt tue apr 14 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a line of showers and thunderstorms will track east-
southeast across the great lakes late tonight, with potential for
strong to severe storms. additional lows through the week
maintain shower and storm chances into the weekend.


lhz361-362-150915-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
903 pm edt tue apr 14 2026

.rest of tonight...east winds 5 to 10 knots. a chance of showers
after midnight. waves 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots. a chance of showers in
the afternoon. waves 1 to 3 feet. 
.wednesday night...northeast winds 5 to 10 knots. a chance of
showers. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.thursday night...north winds 5 to 10 knots backing to the
northwest after midnight. a chance of showers in the evening.
waves 1 to 3 feet. 
.friday...north winds 5 to 10 knots becoming east 10 to 15 knots
late in the afternoon...then becoming southeast 15 to 20 knots
late in the evening. a chance of showers late in the evening.
waves 1 to 3 feet building to 4 to 6 feet late in the evening.
waves occasionally around 8 feet. 
.saturday...south winds 20 to 25 knots with gusts to around
30 knots becoming west to 30 knots by midnight. showers early in
the morning. a chance of showers. a chance of snow showers by
midnight. waves 8 to 12 feet. waves occasionally around 15 feet. 
.sunday...west winds to 30 knots with gusts to 35 knot gales. a
chance of snow showers early in the morning. waves 10 to 14 feet.
waves occasionally around 18 feet. 


$$

fzus63 kmkx 150749
glflm 
expires:202604151530;;396753

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cdt wed apr 15 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stationary front will remain parked over the middle third of
the lake into this afternoon, slowly sinking south to the 
southern end of the lake by thursday morning. winds will remain 
southerly south of the front and modestly breezy, while winds 
north of the front will remain light and variable to northerly 
during this time. the front will clear the lake as a cold front 
friday, before low pressure of 29.6 inches approaches from the 
west. marine dense fog will continue through daybreak. will be
monitoring for potential extensions to the dense fog advisory if
conditions warrant this morning. 

additional thunderstorms are forecast over the southern third of
lake michigan today. a few storms could be severe with large hail
being the primary concern. additional storms are possible friday
into saturday, with a few stronger storms possible. 


lmz261-362-364-366-563-565-567-868-151530-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
249 am cdt wed apr 15 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 7 am cdt this morning...

.today...north winds 5 to 10 kt increasing to 10 to 15 kt. areas
of dense fog this morning, then patchy dense fog this afternoon.
slight chance of rain showers. waves 1 to 3 ft. 
.tonight...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
patchy dense fog in the evening. chance of rain showers and
thunderstorms in the evening, then chance of rain showers and
slight chance of thunderstorms overnight. waves 1 to 2 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 10 to
15 kt. chance of rain showers. waves 1 to 2 ft. 
.thursday night...north winds 5 to 10 kt becoming northeast.
waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 3 to 5 ft. 
.friday night...southeast winds 15 to 25 kt becoming south to
30 kt. rain showers. waves 4 to 7 ft occasionally to 9 ft.
.saturday...south winds to 30 kt becoming southwest. chance of
rain showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...northwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft.  

$$

fzus63 kmkx 150749
glflm 
expires:202604151530;;396754

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cdt wed apr 15 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stationary front will remain parked over the middle third of
the lake into this afternoon, slowly sinking south to the 
southern end of the lake by thursday morning. winds will remain 
southerly south of the front and modestly breezy, while winds 
north of the front will remain light and variable to northerly 
during this time. the front will clear the lake as a cold front 
friday, before low pressure of 29.6 inches approaches from the 
west. marine dense fog will continue through daybreak. will be
monitoring for potential extensions to the dense fog advisory if
conditions warrant this morning. 

additional thunderstorms are forecast over the southern third of
lake michigan today. a few storms could be severe with large hail
being the primary concern. additional storms are possible friday
into saturday, with a few stronger storms possible. 


lmz669-671-870-872-151530-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
249 am cdt wed apr 15 2026

sheboygan wi to pentwater mi south to north point light wi to
grand haven mi...

...dense fog advisory in effect until 7 am cdt this morning...

.today...southwest winds 15 to 25 kt diminishing to 10 to 20 kt
late this morning, then becoming west early this afternoon
veering to northeast 10 to 15 kt late. areas of dense fog. chance
of rain showers and slight chance of thunderstorms. waves 2 to
4 ft. 
.tonight...east winds 10 to 15 kt. patchy dense fog in the
evening. rain showers likely with a chance of thunderstorms in
the evening, then rain showers with a chance of thunderstorms
overnight. waves 1 to 3 ft. 
.thursday...east winds 10 to 15 kt backing to northwest. rain
showers likely with a chance of thunderstorms in the morning,
then chance of rain showers in the afternoon. waves 1 to 2 ft. 
.thursday night...north winds 5 to 10 kt. waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt becoming south 10 to 20 kt
in the afternoon. waves 1 to 2 ft building to 3 to 5 ft. 
.friday night...southeast winds 15 to 25 kt becoming south to
30 kt. rain showers with a chance of thunderstorms. waves 4 to
7 ft occasionally to 9 ft. 
.saturday...south winds to 30 kt becoming southwest. chance of
rain showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 150749
glflm 
expires:202604151530;;396755

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cdt wed apr 15 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stationary front will remain parked over the middle third of
the lake into this afternoon, slowly sinking south to the 
southern end of the lake by thursday morning. winds will remain 
southerly south of the front and modestly breezy, while winds 
north of the front will remain light and variable to northerly 
during this time. the front will clear the lake as a cold front 
friday, before low pressure of 29.6 inches approaches from the 
west. marine dense fog will continue through daybreak. will be
monitoring for potential extensions to the dense fog advisory if
conditions warrant this morning. 

additional thunderstorms are forecast over the southern third of
lake michigan today. a few storms could be severe with large hail
being the primary concern. additional storms are possible friday
into saturday, with a few stronger storms possible. 


lmz080-673-675-777-779-874-876-878-151530-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
249 am cdt wed apr 15 2026

north point light wi to grand haven mi south...

.today...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
areas of dense fog this morning, then patchy dense fog this
afternoon. rain showers likely with slight chance of
thunderstorms this morning, then chance of rain showers and
thunderstorms this afternoon. waves 2 to 4 ft. 
.tonight...south winds 10 to 15 kt. patchy dense fog in the
evening. rain showers likely with a chance of thunderstorms in
the evening, then rain showers with a chance of thunderstorms
overnight. waves 1 to 3 ft. 
.thursday...southwest winds 10 to 20 kt veering to northwest
10 to 15 kt. rain showers likely with a chance of thunderstorms.
waves 1 to 3 ft. 
.thursday night...northwest winds 5 to 10 kt becoming north.
waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 to 2 ft building to 2 to 4 ft. 
.friday night...southeast winds 15 to 25 kt becoming south.
showers with a chance of thunderstorms. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday...south winds 15 to 25 kt becoming west. chance of rain
showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 150246
glflm 
expires:202604150930;;383636

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
946 pm cdt tue apr 14 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stationary front will remain parked over the middle third of
the lake into tomorrow, slowly sinking south to the southern end
of the lake by thursday morning. winds will remain southerly
south of the front and modestly breezy, while winds north of the
front will remain light and variable to northerly during this
time. the front will clear the lake as a cold front friday, 
before low pressure of 29.6 inches approaches from the west.

thunderstorms are possible over the southern third overnight into
thursday morning, then thursday late afternoon and night.
thunderstorm chances return along a cold front friday night. 


lmz080-777-779-874-876-878-150930-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
946 pm cdt tue apr 14 2026

winthrop harbor il to south haven mi south...

.rest of tonight...south winds 15 to 25 kt becoming southwest.
patchy fog late this evening, then areas of dense fog overnight.
showers with thunderstorms likely late this evening, then showers
likely with a chance of thunderstorms overnight. waves 2 to 4 ft.
.wednesday...southwest winds 10 to 20 kt becoming south. areas of
dense fog in the morning, then patchy dense fog in the afternoon.
rain showers likely with a chance of thunderstorms in the
morning, then chance of rain showers and thunderstorms in the
afternoon. waves 1 to 3 ft. 
.wednesday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. patchy fog in the evening. rain showers with a chance of
thunderstorms. waves 1 to 3 ft. 
.thursday...southwest winds 15 to 25 kt becoming west 10 to 15 kt
in the afternoon. rain showers likely in the morning, then rain
showers likely with a chance of thunderstorms in the afternoon.
waves 2 to 4 ft. 
.thursday night...northwest winds 5 to 10 kt becoming north.
waves 1 to 3 ft. 
.friday...southeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...southeast winds 15 to 25 kt becoming south.
showers with a chance of thunderstorms. waves 3 to 5 ft building
to 4 to 7 ft occasionally to 9 ft. 
.saturday...south winds 15 to 25 kt becoming southwest. chance of
showers. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 8 to
12 ft occasionally to 16 ft.  

$$

fzus63 kmkx 150246
glflm 
expires:202604150930;;383637

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
946 pm cdt tue apr 14 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stationary front will remain parked over the middle third of
the lake into tomorrow, slowly sinking south to the southern end
of the lake by thursday morning. winds will remain southerly
south of the front and modestly breezy, while winds north of the
front will remain light and variable to northerly during this
time. the front will clear the lake as a cold front friday, 
before low pressure of 29.6 inches approaches from the west.

thunderstorms are possible over the southern third overnight into
thursday morning, then thursday late afternoon and night.
thunderstorm chances return along a cold front friday night. 


lmz673-675-150930-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
946 pm cdt tue apr 14 2026

north point light wi to grand haven mi south to winthrop harbor
il to south haven mi...

...tornado watch 109 in effect until 10 pm cdt this evening...

.rest of tonight...south winds 15 to 25 kt becoming southwest
10 to 20 kt. areas of dense fog. showers with thunderstorms
likely late this evening, then chance of showers and
thunderstorms overnight. waves 2 to 4 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south 10 to
15 kt. areas of dense fog in the morning, then patchy dense fog
in the afternoon. chance of rain showers and thunderstorms. waves
1 to 3 ft. 
.wednesday night...south winds 10 to 15 kt. patchy fog in the
evening. rain showers with a chance of thunderstorms. waves 1 to
3 ft. 
.thursday...southwest winds 10 to 15 kt veering to northwest 5 to
10 kt. chance of rain showers in the morning, then chance of rain
showers and thunderstorms in the afternoon. waves 1 to 3 ft. 
.thursday night...north winds 5 to 10 kt. waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 to 2 ft building to 1 to 3 ft. 
.friday night...southeast winds 15 to 25 kt becoming south.
showers with a chance of thunderstorms. waves 3 to 5 ft building
to 4 to 7 ft occasionally to 9 ft. 
.saturday...south winds 15 to 25 kt becoming west. showers
likely. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 7 to
10 ft occasionally to 13 ft subsiding to 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmqt 150801
glfls 
expires:202604152000;;396972

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 15 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

weak ridging of around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed apr 15 2026 /300 am cdt wed apr 15 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/ this
morning...

.early this morning...west winds 5 to 15 knots. areas of dense
fog. waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots veering northeast in the
afternoon. areas of dense fog through early afternoon. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast late.
patchy fog through midnight, then areas of dense fog after
midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east in the
afternoon. areas of dense fog through early afternoon. waves calm
to 2 feet. 
.thursday night...northeast winds 10 to 20 knots. waves calm to
2 feet. 
.friday...northeast winds 15 to 25 knots. a chance of rain
showers. a chance of thunderstorms by mid afternoon. waves
building to 2 to 4 feet. 
.friday night...north winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. rain showers through midnight,
then a chance of rain showers, possibly mixed with snow after
midnight. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.saturday...west winds 20 to 30 knots veering northwest. a chance
of snow showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202604152000;;396973

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 15 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

weak ridging of around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz263-152000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...north winds less than 10 knots. areas of
dense fog. waves calm to 2 feet. 
.today...north winds less than 10 knots veering northeast late.
areas of dense fog through early afternoon. waves calm to 2 feet.
.tonight...east winds less than 10 knots. patchy fog through
midnight, then areas of dense fog after midnight. waves calm to
2 feet. 
.thursday...northeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then veering east late. areas of dense
fog through early afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of rain showers by mid afternoon.
waves building to 2 to 4 feet. 
.friday night...northeast winds 20 to 30 knots backing northwest
after midnight. rain showers through midnight, then a chance of
rain showers, possibly mixed with snow after midnight. waves
building to 4 to 7 feet occasionally to 9 feet. 
.saturday...west gales to 35 knots veering northwest. a chance of
snow showers. waves building to 8 to 11 feet occasionally to
14 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202604152000;;396976

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 15 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

weak ridging of around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz266-152000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...northwest winds 5 to 15 knots. widespread
dense fog. waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots veering north in the
afternoon. areas of dense fog through early afternoon, then
patchy fog by mid afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots. patchy fog. waves calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots backing north in the
afternoon, then veering east late. patchy fog through early
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...south gales to 35 knots. rain showers. waves
building to 4 to 8 feet occasionally to 10 feet. 
.saturday...northwest gales to 40 knots. a chance of rain
showers. a chance of snow showers. waves building to 12 to
17 feet occasionally to 21 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves subsiding to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202604152000;;396975

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 15 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

weak ridging of around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...northwest winds 10 to 20 knots. widespread
dense fog. waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots veering north late. areas
of dense fog through early afternoon, then patchy fog by mid
afternoon. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering southeast after
midnight, then backing north late. areas of fog. waves calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. patchy fog
through early afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.friday...southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...south gales to 35 knots. rain showers. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.saturday...west gales to 40 knots veering northwest. a chance of
rain showers. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202604152000;;396974

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 15 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

weak ridging of around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz264-152000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...north winds 5 to 15 knots. areas of dense
fog. waves calm to 2 feet. 
.today...north winds less than 10 knots. areas of dense fog
through early afternoon. waves calm to 2 feet. 
.tonight...northeast winds less than 10 knots veering south after
midnight. patchy fog. waves calm to 2 feet. 
.thursday...northeast winds less than 10 knots veering south in
the afternoon, then becoming east 5 to 15 knots late. patchy
dense fog through early afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots backing east
after midnight. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...southeast winds 15 to 25 knots becoming north
20 to 30 knots after midnight. rain showers. waves building to
4 to 7 feet occasionally to 9 feet. 
.saturday...northwest gales to 40 knots. a chance of rain
showers. a chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.sunday...northwest gales to 40 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202604152000;;396977

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 15 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

weak ridging of around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz267-152000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...east winds 5 to 15 knots. widespread dense
fog. waves calm to 2 feet. 
.today...north winds 5 to 15 knots backing northwest in the
afternoon. areas of dense fog. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing southwest after
midnight, then veering north late. areas of dense fog. a slight
chance of rain showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest in the
afternoon. areas of dense fog through early afternoon. waves calm
to 2 feet. 
.thursday night...north winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.friday night...southeast winds 20 to 30 knots. a chance of rain
showers through midnight. rain showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday...west gales to 35 knots. rain showers likely. a chance
of snow showers. waves building to 12 to 17 feet occasionally to
21 feet. 
.sunday...northwest gales to 35 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 4 to
7 feet occasionally to 9 feet. 

$$