fzus61 kbuf 292002
glflo 
expires:202604300300;;744620

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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>065-300300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed apr 29 2026

.tonight...north winds 10 to 15 knots becoming west. rain through
the early overnight, then a chance of showers late. waves 1 to
3 feet. 
.thursday...west winds 10 to 15 knots increasing to 15 to
20 knots. waves 2 to 4 feet building to 3 to 5 feet. 
.thursday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...west winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.sunday...west winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.monday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely. waves 1 to 3 feet. 

$$

fzus61 kbuf 292002
glflo 
expires:202604300300;;744619

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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.


loz062-300300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed apr 29 2026

.tonight...northwest winds 10 to 15 knots becoming west. rain
this evening. waves 1 to 3 feet. 
.thursday...west winds 10 to 15 knots increasing to 15 to
20 knots. waves 2 to 4 feet. 
.thursday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...west winds 10 to 15 knots. waves 1 to 2 feet. 
.friday night...west winds around 10 knots. waves 1 to 2 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 2 feet. 
.sunday...west winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely. waves 2 to 4 feet subsiding to 1 to
3 feet. 

$$

fzus61 kcle 291936
glfle 
expires:202604300215;;743936

open lake forecast for lake erie
national weather service cleveland oh
336 pm 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 29.80 inches moves off to the northeast this evening
as 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 with low pressure 29.80 inches moving
through the region on monday. 


lez164>166-300215-
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-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
336 pm edt wed apr 29 2026

.tonight...north winds 10 to 15 knots. a slight chance of
showers. waves 1 to 3 feet. 
.thursday...northwest winds 10 to 15 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. a chance of showers.
waves 1 to 2 feet. 
.friday night...northwest winds around 10 knots becoming north.
waves 1 to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.sunday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers sunday night. waves 2 to 4 feet. 
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 

$$

fzus61 kcle 291936
glfle 
expires:202604300215;;743937

open lake forecast for lake erie
national weather service cleveland oh
336 pm 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 29.80 inches moves off to the northeast this evening
as 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 with low pressure 29.80 inches moving
through the region on monday. 


lez061-167>169-300215-
ripley to buffalo ny extending from 5nm 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-
336 pm edt wed apr 29 2026

.tonight...north winds 10 to 15 knots becoming northwest. a
slight chance of showers this evening. waves 1 to 3 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 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming west. waves 1 to
2 feet. 
.friday night...northwest winds 5 to 10 knots. waves 1 to 2 feet.
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers sunday night. waves 1 to
3 feet building to 2 to 4 feet. 
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 

$$

fzus61 kcle 291936
glfle 
expires:202604300215;;743935

open lake forecast for lake erie
national weather service cleveland oh
336 pm 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 29.80 inches moves off to the northeast this evening
as 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 with low pressure 29.80 inches moving
through the region on monday. 


lez162-163-300215-
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-
336 pm edt wed apr 29 2026

.tonight...north winds 10 to 15 knots. a chance of showers
through the early overnight, then a slight chance of showers
late. waves 2 feet or less. 
.thursday...northwest winds around 10 knots. a slight chance of
showers early. waves around 1 foot. 
.thursday night...northwest winds 5 to 10 knots. waves 1 to
2 feet. 
.friday...northwest winds 5 to 10 knots. waves around 1 foot. 
.friday night...northwest winds around 10 knots. waves 1 to
2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers sunday night. waves 1 to 3 feet. 
.monday...southwest winds 15 to 20 knots becoming west. a chance
of showers. waves 1 to 3 feet. 

$$

fzus63 kdtx 292002
glflh 
expires:202604300415;;744616

open lake forecast for lake huron
national weather service detroit/pontiac mi
402 pm 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>464-300415-
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-
402 pm edt wed apr 29 2026

.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 in the afternoon. waves 3 to 5 feet subsiding to 2 to
4 feet late in the afternoon. 
.thursday night...light and variable winds becoming northwest
5 to 10 knots after midnight. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet. 
.friday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.saturday...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 southwest late in
the evening. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming southwest 10 to
15 knots . a chance of. waves 1 to 3 feet. 
.monday...southwest winds 10 to 15 knots becoming west 5 to
10 knots early in the evening...then increasing to 10 to 15 knots
by midnight. a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kdtx 292002
glfsc 
expires:202604300415;;744650

lake st clair forecast
national weather service detroit/pontiac mi
402 pm 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.


lcz460-300415-
lake st clair-
402 pm edt wed apr 29 2026

.tonight...north winds 10 to 15 knots diminishing to 5 to 10 knots
after midnight. partly cloudy becoming mostly cloudy by midnight
becoming partly cloudy. waves 2 feet or less.
.thursday...northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the late morning and afternoon. partly sunny. waves 2 feet
or less.
.thursday night...north winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.friday...northwest winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. partly sunny. waves 2 feet or less.
.friday night...north winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. partly cloudy. waves 2 feet
or less.
.saturday...northwest winds 5 to 10 knots. mostly sunny in the
morning becoming partly cloudy. waves 2 feet or less.
.sunday...southwest winds 10 to 15 knots. partly cloudy. a chance of
light showers. waves 2 feet or less.
.monday...west winds 10 to 15 knots. partly cloudy. a chance of
light showers. waves 2 feet or less.

$$

fzus63 kdtx 292002
glflh 
expires:202604300415;;744614

open lake forecast for lake huron
national weather service detroit/pontiac mi
402 pm 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.


lhz361-300415-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
402 pm edt wed apr 29 2026

.tonight...northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight...then decreasing to 10 to 15 knots early
in the morning. 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...west winds 10 to 15 knots becoming northwest
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 2 to 4 feet. 
.friday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 3 to 5 feet. 
.saturday...west winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then becoming southwest 5 to
10 knots by midnight. a chance of showers by midnight. waves 2 to
4 feet. 
.monday...west winds 10 to 15 knots. a chance of showers. waves
1 to 3 feet. 


$$

fzus63 kdtx 292002
glflh 
expires:202604300415;;744615

open lake forecast for lake huron
national weather service detroit/pontiac mi
402 pm 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.


lhz362-363-300415-
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-
402 pm edt wed apr 29 2026

.tonight...north winds 10 to 15 knots backing to the northwest in
the late evening and overnight. waves 2 to 4 feet. 
.thursday...northwest winds 10 to 15 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet late in the afternoon. 
.thursday night...north winds 5 to 10 knots becoming northwest
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.friday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.friday night...northwest winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.saturday...northwest winds 10 to 15 knots becoming northeast
5 to 10 knots late in the afternoon...then backing to the west
late in the evening. waves 3 to 5 feet. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . a chance of showers by midnight. waves 2 to 4 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming west 10 to 15 knots
by midnight. a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kmkx 291924
glflm 
expires:202604300315;;743715

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 pm 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. northerly winds persist and gradually diminish 
through the evening. winds will then remain lighter and variable 
through the end of the week. an isolated thunderstorm will be 
possible thursday afternoon near the wi shore. high pressure will 
then slide southward into the lower mississippi valley sunday, 
shifting winds to westerly and increasing into the start of next 
week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300315-
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-
224 pm cdt wed apr 29 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northwest 5 to 10 kt.
slight chance of rain showers this evening. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.thursday...north winds 5 to 10 kt becoming northeast 10 to
15 kt. slight chance of rain showers in the afternoon. waves 1 to
2 ft. 
.thursday night...northeast winds 5 to 10 kt becoming north.
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. 
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 1 to 2 ft building to 2 to 4 ft. 
.sunday...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...west winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 291924
glflm 
expires:202604300315;;743714

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 pm 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. northerly winds persist and gradually diminish 
through the evening. winds will then remain lighter and variable 
through the end of the week. an isolated thunderstorm will be 
possible thursday afternoon near the wi shore. high pressure will 
then slide southward into the lower mississippi valley sunday, 
shifting winds to westerly and increasing into the start of next 
week.


lmz261-362-364-366-563-565-567-868-300315-
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-
224 pm cdt wed apr 29 2026

sheboygan wi to pentwater mi north...

.tonight...northwest winds 10 to 15 kt becoming north. chance of
rain showers this evening. waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. slight chance of rain showers in the afternoon. waves 1 to
2 ft. 
.thursday night...northwest winds 10 to 20 kt. 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. 
.saturday night...southwest winds 10 to 20 kt diminishing to
10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.monday...west winds 10 to 15 kt increasing to 10 to 20 kt. waves
1 to 3 ft.  

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744511

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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.



lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed apr 29 2026 /301 pm cdt wed apr 29 2026/

.late this afternoon...southwest winds 5 to 15 knots. a chance of
snow and rain showers. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. a slight
chance of rain showers. a slight chance of snow showers after
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering south in the
afternoon, then veering southwest late. a slight chance of snow
showers. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south by mid
afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.monday...west winds 10 to 20 knots. a chance of rain showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744512

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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.



lsz263-300800-
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 pm edt wed apr 29 2026

.late this afternoon...west winds less than 10 knots. a slight
chance of rain and snow showers. waves calm to 2 feet. 
.tonight...northwest winds less than 10 knots becoming north 5 to
15 knots after midnight. a slight chance of rain and snow
showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming west less than
10 knots late. a slight chance of snow showers. waves calm to
2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. a slight chance of rain and snow showers through
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. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west. a chance of
rain showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744513

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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.



lsz264-300800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed apr 29 2026

.late this afternoon...northwest winds less than 10 knots. a
slight chance of rain and snow showers. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering north late.
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 backing west by mid
afternoon. waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west. waves
building to 1 to 3 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744514

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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.



lsz265-300800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed apr 29 2026

.late this afternoon...north winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northwest winds 5 to 15 knots increasing to 10 to
20 knots late. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...northwest winds 10 to 20 knots veering north
late. waves calm to 2 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.friday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots. waves calm to 2 feet.
.saturday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots backing west. a chance
of rain showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744515

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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.



lsz266-300800-
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 pm edt wed apr 29 2026

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

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744516

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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.



lsz267-300800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed apr 29 2026

.late this afternoon...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...northwest winds 10 to 20 knots veering north late. a
slight chance of snow showers after midnight. 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. a slight
chance of snow showers through early afternoon. waves building to
1 to 3 feet. 
.thursday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.friday...north winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots backing west by mid
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.saturday night...west winds 10 to 20 knots backing southwest
after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 
.monday...west winds 10 to 20 knots becoming northwest 15 to
25 knots. a chance of rain showers. waves building to 2 to
4 feet. 

$$