fzus61 kbuf 290802
glflo 
expires:202604291500;;717371

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed apr 29 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...an elongated 29.9 inch low over the upper ohio valley 
will deepen to 29.7 inches as it tracks to near watertown by early 
this evening. this low will then lift out across quebec tonight and 
thursday while another 29.6 inch low develops and tracks northeast 
off the mid-atlantic and new england coastlines. this second low 
will then retrograde northward and then northwestward across the 
canadian maritimes and quebec respectively friday and saturday. a 
third 29.5 inch low will then track from the southeastern states 
northeastward into the western atlantic saturday through sunday... 
while a 29.8 inch high ridges across the lower great lakes.


loz062-291500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt wed apr 29 2026

.today...north winds 5 to 15 knots. rain this afternoon. waves
2 feet or less. 
.tonight...northwest winds 10 to 15 knots becoming west 15 to
20 knots. rain in the evening, then a chance of showers after
midnight. waves 2 to 4 feet. 
.thursday...west winds 15 to 20 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 15 to 20 knots becoming west
10 to 15 knots. waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet. 

$$

fzus61 kbuf 290802
glflo 
expires:202604291500;;717372

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed apr 29 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...an elongated 29.9 inch low over the upper ohio valley 
will deepen to 29.7 inches as it tracks to near watertown by early 
this evening. this low will then lift out across quebec tonight and 
thursday while another 29.6 inch low develops and tracks northeast 
off the mid-atlantic and new england coastlines. this second low 
will then retrograde northward and then northwestward across the 
canadian maritimes and quebec respectively friday and saturday. a 
third 29.5 inch low will then track from the southeastern states 
northeastward into the western atlantic saturday through sunday... 
while a 29.8 inch high ridges across the lower great lakes.


loz063>065-291500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed apr 29 2026

.today...east winds 5 to 15 knots becoming north. rain this
afternoon. waves 2 feet or less. 
.tonight...northwest winds 10 to 15 knots becoming west 15 to
20 knots. rain through the early overnight, then a chance of
showers late. waves 2 feet or less building to 3 to 5 feet. 
.thursday...west winds 15 to 25 knots. a chance of rain showers
in the morning. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.thursday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 3 to 6 feet. 
.saturday...west winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 15 knots becoming southwest. waves
1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kcle 290754
glfle 
expires:202604291430;;717077

open lake forecast for lake erie
national weather service cleveland oh
354 am edt wed apr 29 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...
low pressure 29.70 inches will track south and east of lake erie 
today before departing to the northeast tonight. a trough 
averaging 30.00 inches will linger over the lake through the end 
of the week. high pressure 30.10 inches will build into the 
region on saturday.



lez165>167-291430-
vermilion to avon point oh beyond 5 nm 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-
354 am edt wed apr 29 2026

.today...northeast winds 5 to 15 knots becoming north. a chance
of showers early, then showers. a chance of showers late. waves
1 to 2 feet. 
.tonight...north winds 10 to 15 knots becoming northwest. a
slight chance of showers early. waves 1 to 2 feet. 
.thursday...northwest winds around 10 knots becoming west. waves
1 to 2 feet. 
.thursday night...west winds 5 to 10 knots becoming northwest.
waves around 1 foot. 
.friday...northwest winds 5 to 10 knots. waves 1 to 2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.sunday...west winds 10 to 15 knots. a chance of showers sunday
night. waves 2 to 3 feet. 

$$

fzus61 kcle 290754
glfle 
expires:202604291430;;717078

open lake forecast for lake erie
national weather service cleveland oh
354 am edt wed apr 29 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...
low pressure 29.70 inches will track south and east of lake erie 
today before departing to the northeast tonight. a trough 
averaging 30.00 inches will linger over the lake through the end 
of the week. high pressure 30.10 inches will build into the 
region on saturday.



lez061-168-169-291430-
ripley to buffalo ny extending from 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-
354 am edt wed apr 29 2026

.today...northeast winds 5 to 15 knots becoming north. a chance
of showers late this morning. showers this afternoon. waves 1 to
3 feet. 
.tonight...north winds 5 to 15 knots becoming northwest. a chance
of showers early, then a slight chance of showers late in the
evening. waves 1 to 2 feet. 
.thursday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.thursday night...west winds 5 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots becoming southwest. a chance
of rain showers sunday night. waves 1 to 3 feet. 

$$

fzus61 kcle 290754
glfle 
expires:202604291430;;717076

open lake forecast for lake erie
national weather service cleveland oh
354 am edt wed apr 29 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...
low pressure 29.70 inches will track south and east of lake erie 
today before departing to the northeast tonight. a trough 
averaging 30.00 inches will linger over the lake through the end 
of the week. high pressure 30.10 inches will build into the 
region on saturday.



lez162>164-291430-
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-
354 am edt wed apr 29 2026

.today...northeast winds 5 to 15 knots becoming north. showers
likely this morning, then a chance of showers this afternoon.
waves 2 feet or less. 
.tonight...north winds 5 to 15 knots. a slight chance of showers
through the early overnight. waves 2 feet or less. 
.thursday...northwest winds around 10 knots. waves 1 foot or
less. 
.thursday night...northwest winds around 10 knots. waves around
1 foot. 
.friday...northwest winds around 10 knots. waves 1 to 2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
a chance of showers sunday night. waves 1 to 3 feet. 

$$

fzus63 kdtx 290752
glfsc 
expires:202604291600;;717066

lake st clair forecast
national weather service detroit/pontiac mi
352 am edt wed apr 29 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 weak surface low lifts through the ohio valley today
leading to periods of light showers. light northwest flow
dominates the region the rest of the week, then high pressure
attempts to build in from central canada/conus over the weekend.


lcz460-291600-
lake st clair-
352 am edt wed apr 29 2026

.today...north winds 10 to 15 knots. mostly cloudy. scattered light
showers early in the morning...then numerous light showers late in
the morning. scattered light showers early in the afternoon. waves 2
feet or less.
.tonight...north winds 10 to 15 knots diminishing to 5 to 10 knots
after midnight. partly cloudy. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots. partly sunny. waves 2
feet or less.
.thursday night...north winds 5 to 10 knots. mostly cloudy early in
the evening becoming mostly clear. waves 2 feet or less.
.friday...northwest winds 10 to 15 knots. mostly sunny in the
morning becoming partly cloudy. waves 2 feet or less.
.saturday...northwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.sunday...west winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kdtx 290752
glflh 
expires:202604291600;;717061

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt wed apr 29 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 weak surface low lifts through the ohio valley today
leading to periods of light showers. light northwest flow
dominates the region the rest of the week, then high pressure
attempts to build in from central canada/conus over the weekend.


lhz361-291600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
352 am edt wed apr 29 2026

.today...northwest winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.thursday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then decreasing to 10 to 15 knots
late in the evening. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 15 to
20 knots early in the evening...then becoming northwest 10 to
15 knots by midnight. waves 3 to 5 feet. 
.sunday...west winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kdtx 290752
glflh 
expires:202604291600;;717062

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt wed apr 29 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 weak surface low lifts through the ohio valley today
leading to periods of light showers. light northwest flow
dominates the region the rest of the week, then high pressure
attempts to build in from central canada/conus over the weekend.


lhz362-363-291600-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
352 am edt wed apr 29 2026

.today...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...north winds 10 to 15 knots backing to the northwest
late in the evening...then increasing to 15 to 20 knots after
midnight. waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots. waves 3 to
5 feet. 
.friday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 5 to
10 knots early in the evening...then increasing to 10 to 15 knots
by midnight. waves 3 to 5 feet. 
.sunday...west winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kdtx 290752
glflh 
expires:202604291600;;717063

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt wed apr 29 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 weak surface low lifts through the ohio valley today
leading to periods of light showers. light northwest flow
dominates the region the rest of the week, then high pressure
attempts to build in from central canada/conus over the weekend.


lhz462>464-291600-
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-
352 am edt wed apr 29 2026

.today...north winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet late
in the afternoon. 
.tonight...north winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. waves 3 to 5 feet subsiding to
2 to 4 feet early in the afternoon. 
.thursday night...north winds 5 to 10 knots becoming northwest
10 to 15 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the northwest 5 to
10 knots late in the afternoon backing to the west late in the
evening. waves 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 5 to
10 knots until early evening...then becoming west by midnight.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 15 knots backing to the southwest by
midnight. waves 1 to 3 feet. 


$$

fzus63 kmkx 290756
glflm 
expires:202604291515;;717102

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 am cdt wed apr 29 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...

high pressure around 30.3 inches over the northern plains will 
gradually shift southeastward into the western great lakes by the 
end of the week. as a backdoor cold front continues to progress
southward, expect winds to continue to turn to northeasterly,
persisting into the morning before diminishing this afternoon.
winds will then remain light through the remainder of the week. an
isolated storm is possible this afternoon and thursday afternoon
near the wisconsin shore. high pressure will slide southward into
the lower mississippi valley sunday, shifting winds to westerly
and increasing.


lmz080-669-671-673-675-777-779-870-872-874-876-878-291515-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
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 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 whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 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-
256 am cdt wed apr 29 2026

sheboygan wi to pentwater mi south...

.today...north winds 10 to 15 kt increasing to 10 to 20 kt.
isolated rain showers this morning, then slight chance of rain
showers this afternoon. waves 2 to 4 ft. 
.tonight...north winds 10 to 15 kt becoming northwest 5 to 10 kt.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.thursday...northwest winds 5 to 10 kt becoming north 10 to
15 kt. waves 1 to 2 ft. 
.thursday night...north winds 5 to 10 kt. waves 1 to 2 ft. 
.friday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...west winds 10 to 15 kt becoming northwest. waves
1 to 3 ft. 
.saturday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 2 ft. 
.sunday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft.  

$$

fzus63 kmkx 290756
glflm 
expires:202604291515;;717101

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 am cdt wed apr 29 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...

high pressure around 30.3 inches over the northern plains will 
gradually shift southeastward into the western great lakes by the 
end of the week. as a backdoor cold front continues to progress
southward, expect winds to continue to turn to northeasterly,
persisting into the morning before diminishing this afternoon.
winds will then remain light through the remainder of the week. an
isolated storm is possible this afternoon and thursday afternoon
near the wisconsin shore. high pressure will slide southward into
the lower mississippi valley sunday, shifting winds to westerly
and increasing.


lmz261-362-364-366-563-565-567-868-291515-
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-
256 am cdt wed apr 29 2026

sheboygan wi to pentwater mi north...

.today...north winds 10 to 15 kt becoming northwest 10 to 20 kt.
isolated rain showers this morning. waves 1 to 3 ft. 
.tonight...northwest winds 10 to 15 kt becoming north. slight
chance of rain showers in the evening. waves 1 to 2 ft. 
.thursday...north winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt becoming northwest.
waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.friday night...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft.  

$$

fzus63 kmqt 290801
glfls 
expires:202604292000;;717280

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed apr 29 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 30.0 inches over lake superior this morning persists 
between 30.0 and 30.1 inches through early saturday as a 30.3 inch 
high slowly shifts east from the canadian prairies to northwest 
ontario and hudson bay. weak troughing of 29.8 inches moves over the 
lake saturday night and strengthens to 29.5 inches through monday as 
the parent low pressure deepens to 29.4 inches over northern ontario 
and james bay.



lsz162-292000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt wed apr 29 2026 /301 am cdt wed apr 29 2026/

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots backing southwest in the
afternoon, then veering west late. a slight chance of rain
showers. a chance of snow showers by mid afternoon. waves calm to
2 feet. 
.tonight...northwest winds 5 to 15 knots veering north after
midnight. a slight chance of rain and snow showers through
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202604292000;;717281

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed apr 29 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 30.0 inches over lake superior this morning persists 
between 30.0 and 30.1 inches through early saturday as a 30.3 inch 
high slowly shifts east from the canadian prairies to northwest 
ontario and hudson bay. weak troughing of 29.8 inches moves over the 
lake saturday night and strengthens to 29.5 inches through monday as 
the parent low pressure deepens to 29.4 inches over northern ontario 
and james bay.



lsz263-292000-
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-
401 am edt wed apr 29 2026

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots backing west in the
afternoon, then diminishing to less than 10 knots late. a slight
chance of rain showers. a slight chance of snow showers by mid
afternoon. waves calm to 2 feet. 
.tonight...north winds less than 10 knots increasing to 5 to
15 knots after midnight. a slight chance of rain and snow showers
through midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing west late. waves
calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202604292000;;717282

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed apr 29 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 30.0 inches over lake superior this morning persists 
between 30.0 and 30.1 inches through early saturday as a 30.3 inch 
high slowly shifts east from the canadian prairies to northwest 
ontario and hudson bay. weak troughing of 29.8 inches moves over the 
lake saturday night and strengthens to 29.5 inches through monday as 
the parent low pressure deepens to 29.4 inches over northern ontario 
and james bay.



lsz264-292000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt wed apr 29 2026

.early this morning...northwest winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...northwest winds less than 10 knots becoming west 5 to
15 knots late. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering north after
midnight. a slight chance of rain and snow showers through
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest late.
waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202604292000;;717283

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed apr 29 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 30.0 inches over lake superior this morning persists 
between 30.0 and 30.1 inches through early saturday as a 30.3 inch 
high slowly shifts east from the canadian prairies to northwest 
ontario and hudson bay. weak troughing of 29.8 inches moves over the 
lake saturday night and strengthens to 29.5 inches through monday as 
the parent low pressure deepens to 29.4 inches over northern ontario 
and james bay.



lsz265-292000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt wed apr 29 2026

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots becoming north 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots backing northwest after
midnight, then becoming north 10 to 20 knots late. waves calm to
2 feet. 
.thursday...north winds 10 to 20 knots. waves building to 1 to
3 feet. 
.thursday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.friday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
building to 2 to 4 feet, then subsiding to calm to 2 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202604292000;;717284

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed apr 29 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 30.0 inches over lake superior this morning persists 
between 30.0 and 30.1 inches through early saturday as a 30.3 inch 
high slowly shifts east from the canadian prairies to northwest 
ontario and hudson bay. weak troughing of 29.8 inches moves over the 
lake saturday night and strengthens to 29.5 inches through monday as 
the parent low pressure deepens to 29.4 inches over northern ontario 
and james bay.



lsz266-292000-
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-
401 am edt wed apr 29 2026

.early this morning...northwest winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.today...northwest winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.tonight...northwest winds 10 to 20 knots veering north late.
waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots becoming northwest 15 to
25 knots late. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots veering north
after midnight. waves 2 to 4 feet. 
.friday...north winds 15 to 25 knots backing northwest by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots. waves subsiding
to 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202604292000;;717285

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed apr 29 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 30.0 inches over lake superior this morning persists 
between 30.0 and 30.1 inches through early saturday as a 30.3 inch 
high slowly shifts east from the canadian prairies to northwest 
ontario and hudson bay. weak troughing of 29.8 inches moves over the 
lake saturday night and strengthens to 29.5 inches through monday as 
the parent low pressure deepens to 29.4 inches over northern ontario 
and james bay.



lsz267-292000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt wed apr 29 2026

.early this morning...northwest winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.today...northwest winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.tonight...northwest winds 10 to 20 knots veering north late.
waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots backing northwest in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves 2 to 4 feet. 
.friday...northwest 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...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots veering northwest. waves 1 to
3 feet. 

$$