fzus61 kbuf 242001
glflo 
expires:202609250300;;994103

open lake forecast for lake ontario
national weather service buffalo ny
401 pm edt thu sep 24 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 expansive 30.3 inch high will remain centered across 
southern quebec through saturday before drifting to eastern quebec 
and labrador sunday. meanwhile, an elongated 29.6 inch low well 
offshore of the mid atlantic coast friday is forecast to strengthen 
to 29.3 inches as it moves to just off the southern new england 
coast saturday night. this low will gradually fill to 29.6 inches by 
monday as it meanders near the new england coastline, finally 
exiting into the canadian maritimes by wednesday.


loz062-250300-
lake ontario open waters from the niagara river to hamlin beach-
401 pm edt thu sep 24 2026

.tonight...east winds 15 to 20 knots becoming northeast 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northeast winds 10 knots or less becoming north. waves
1 to 2 feet. 
.friday night...northwest winds 5 to 15 knots becoming north.
waves 2 feet or less building to 2 to 3 feet. 
.saturday...north winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...north winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.monday...northeast winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet subsiding to 1 foot or less. 
.tuesday...northeast winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus61 kbuf 242001
glflo 
expires:202609250300;;994104

open lake forecast for lake ontario
national weather service buffalo ny
401 pm edt thu sep 24 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 expansive 30.3 inch high will remain centered across 
southern quebec through saturday before drifting to eastern quebec 
and labrador sunday. meanwhile, an elongated 29.6 inch low well 
offshore of the mid atlantic coast friday is forecast to strengthen 
to 29.3 inches as it moves to just off the southern new england 
coast saturday night. this low will gradually fill to 29.6 inches by 
monday as it meanders near the new england coastline, finally 
exiting into the canadian maritimes by wednesday.


loz063>065-250300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 pm edt thu sep 24 2026

.tonight...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.friday...northeast winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.friday night...north winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...north winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.saturday night...north winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.sunday...northeast winds 15 to 25 knots. a chance of showers
sunday night. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.monday...northeast winds 15 to 20 knots becoming north 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...north winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus61 kcle 241937
glfle 
expires:202609250215;;993494

open lake forecast for lake erie
national weather service cleveland oh
337 pm edt thu sep 24 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...
high pressure 30.40 inches will maintain influence over lake erie
through monday before weakening to 30.10 inches as it drifts east
late monday into tuesday.


lez165>167-250215-
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-
337 pm edt thu sep 24 2026

.tonight...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...east winds 5 to 15 knots becoming northeast. waves 1 to
3 feet. 
.friday night...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.saturday...northeast winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 2 feet. 
.sunday...north winds 10 to 15 knots becoming northeast. waves
1 to 2 feet. 
.monday...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.tuesday...south winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 

$$

fzus61 kcle 241937
glfle 
expires:202609250215;;993495

open lake forecast for lake erie
national weather service cleveland oh
337 pm edt thu sep 24 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...
high pressure 30.40 inches will maintain influence over lake erie
through monday before weakening to 30.10 inches as it drifts east
late monday into tuesday.


lez061-168-169-250215-
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-
337 pm edt thu sep 24 2026

.tonight...northeast winds 15 to 20 knots becoming east 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...east winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.friday night...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.saturday...northeast winds 5 to 15 knots becoming north. waves
2 feet or less. 
.saturday night...north winds 5 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.sunday...north winds 5 to 15 knots becoming northeast. waves
1 to 3 feet. 
.monday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 

$$

fzus61 kcle 241937
glfle 
expires:202609250215;;993493

open lake forecast for lake erie
national weather service cleveland oh
337 pm edt thu sep 24 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...
high pressure 30.40 inches will maintain influence over lake erie
through monday before weakening to 30.10 inches as it drifts east
late monday into tuesday.


lez162>164-250215-
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-
337 pm edt thu sep 24 2026

.tonight...east winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...east winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.friday night...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.saturday...northeast winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots becoming north.
waves 2 feet or less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...north winds 10 knots or less becoming southeast. waves
1 foot or less. 
.tuesday...south winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 

$$

fzus63 kdtx 241940
glfsc 
expires:202609250345;;993598

lake st clair forecast
national weather service detroit/pontiac mi
340 pm edt thu sep 24 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 strong high pressure system, 30.30 inches, will
expand from quebec/ontario into michigan by tomorrow afternoon. 
this will bring an extended period of light winds and dry weather 
that will last through early next week.


lcz460-250345-
lake st clair-
340 pm edt thu sep 24 2026

.tonight...east winds 10 to 15 knots. clear. waves 2 feet or less.
.friday...northeast winds 5 to 10 knots. partly sunny. waves 2 feet
or less.
.friday night...north winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.saturday...north winds 5 to 10 knots. sunny. waves 2 feet or less.
.saturday night...north winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. clear. waves 2 feet or less.
.sunday...north winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon and evening. sunny becoming mostly clear. waves 2 feet
or less.
.monday...east winds 5 to 10 knots. mostly clear. waves 2 feet or
less.
.tuesday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 241940
glflh 
expires:202609250345;;993593

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt thu sep 24 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 strong high pressure system, 30.30 inches, will
expand from quebec/ontario into michigan by tomorrow afternoon. 
this will bring an extended period of light winds and dry weather 
that will last through early next week.


lhz361-250345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 pm edt thu sep 24 2026

.tonight...east winds 5 to 10 knots in the evening becoming light
and variable. waves 1 to 3 feet. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.saturday night...light and variable winds. waves nearly calm. 
.sunday...light and variable winds. waves nearly calm. 
.monday...light and variable winds. waves nearly calm. 
.tuesday...light and variable winds becoming southeast 10 to
15 knots . a chance of showers by midnight. waves 2 feet or less.


$$

fzus63 kdtx 241940
glflh 
expires:202609250345;;993594

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt thu sep 24 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 strong high pressure system, 30.30 inches, will
expand from quebec/ontario into michigan by tomorrow afternoon. 
this will bring an extended period of light winds and dry weather 
that will last through early next week.


lhz362-363-250345-
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-
340 pm edt thu sep 24 2026

.tonight...northeast winds 5 to 10 knots veering to the east
after midnight...then becoming light and variable early in the
morning. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...light and variable winds becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...north winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 10 to
15 knots. a chance of. waves 2 feet or less. 


$$

fzus63 kdtx 241940
glflh 
expires:202609250345;;993595

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt thu sep 24 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 strong high pressure system, 30.30 inches, will
expand from quebec/ontario into michigan by tomorrow afternoon. 
this will bring an extended period of light winds and dry weather 
that will last through early next week.


lhz462>464-250345-
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-
340 pm edt thu sep 24 2026

.tonight...northeast winds 5 to 10 knots becoming east 10 to
15 knots after midnight...then becoming southeast 5 to 10 knots
early in the morning. waves 2 feet or less. 
.friday...east winds 5 to 10 knots early in the morning becoming
light and variable...then becoming north 5 to 10 knots late in
the afternoon. waves 2 feet or less. 
.friday night...north winds 5 to 10 knots increasing to 10 to
15 knots by midnight...then becoming northeast 5 to 10 knots
after midnight. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...north winds 10 to 15 knots becoming northeast
5 to 10 knots after midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots increasing to 10 to 15 knots
late in the afternoon...then decreasing to 5 to 10 knots late in
the evening. waves 1 to 3 feet. 
.monday...north winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.tuesday...light and variable winds becoming south 10 to
15 knots. waves 2 feet or less. 


$$

fzus63 kmkx 242010
glflm 
expires:202609250330;;994827

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
310 pm cdt thu sep 24 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...

strong high pressure over ontario will weaken to around 30.4 
inches tonight, leading to continued very light east winds. light 
east to southeast winds will prevail for the rest of the week and 
into the weekend as high pressure builds farther south into the 
great lakes region. high pressure will progress into the ohio
valley into tuesday, allowing winds to turn southeasterly and
increase as low pressure develops in the central plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-250330-
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-
310 pm cdt thu sep 24 2026

sheboygan wi to pentwater mi south...

.tonight...east winds 5 to 10 kt increasing to 10 to 15 kt late
this evening, then becoming southeast 10 to 20 kt after midnight
diminishing to 10 to 15 kt late. waves 2 to 4 ft. 
.friday...southeast winds 10 to 15 kt becoming northeast. waves
2 to 4 ft subsiding to 1 to 2 ft. 
.friday night...northeast winds 5 to 10 kt becoming east. waves
1 to 2 ft. 
.saturday...southeast winds 5 to 10 kt becoming east. waves 1 to
2 ft. 
.saturday night...northeast winds 5 to 10 kt becoming east. waves
1 ft or less. 
.sunday...east winds 5 to 10 kt becoming northeast. waves 1 to
2 ft. 
.sunday night...north winds 5 to 10 kt becoming northeast. waves
1 ft or less. 
.monday...east winds 5 to 10 kt becoming southeast. waves 1 ft or
less. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 242010
glflm 
expires:202609250330;;994826

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
310 pm cdt thu sep 24 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...

strong high pressure over ontario will weaken to around 30.4 
inches tonight, leading to continued very light east winds. light 
east to southeast winds will prevail for the rest of the week and 
into the weekend as high pressure builds farther south into the 
great lakes region. high pressure will progress into the ohio
valley into tuesday, allowing winds to turn southeasterly and
increase as low pressure develops in the central plains.


lmz261-362-364-366-563-565-567-868-250330-
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-
310 pm cdt thu sep 24 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 10 to 20 kt veering to south 10 to
15 kt. waves 1 to 3 ft. 
.friday...south winds 10 to 15 kt becoming southwest. waves 1 to
3 ft subsiding to 1 to 2 ft. 
.friday night...north winds 5 to 10 kt veering to east. waves
1 to 2 ft. 
.saturday...east winds 5 to 10 kt. waves 1 ft or less. 
.saturday night...northeast winds 5 to 10 kt becoming east. waves
1 ft or less. 
.sunday...southeast winds 5 to 10 kt. waves 1 ft or less. 
.sunday night...northeast winds 5 to 10 kt diminishing to less
than 10 kt. waves nearly calm. 
.monday...southeast winds 5 to 10 kt veering to south. waves
nearly calm. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft. 

$$

fzus63 kmqt 242001
glfls 
expires:202609250800;;994106

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu sep 24 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...

a 30.4 inch high centered over quebec will weaken to 30.3 inches 
over the great lakes basin as a 29.5 inch low develops over the 
northern rockies. on saturday the high begins shifting northeast 
toward northern quebec while the low deepens and moves north through 
the canadian prairies. sunday through monday, the high shifts east 
to the canadian maritimes, weakening to 30.0 inches. this gradually 
weakens high pressure ridging over lake superior from 30.1 inches 
sunday morning to 29.9 inches by the end of monday as a 29.8 inch 
trough approaches from the west. by tuesday evening the trough will 
move over lake superior at 29.7 inches.




lsz162-250800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt thu sep 24 2026 /301 pm cdt thu sep 24 2026/

.late this afternoon...east winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots diminishing to less than
10 knots after midnight, then veering south late. a slight chance
of showers. waves calm to 2 feet. 
.friday...southwest winds less than 10 knots veering north in the
afternoon, then becoming east 5 to 15 knots late. waves calm to
2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight, then veering east late. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds less than 10 knots. waves calm to
2 feet. 
.monday...east winds 5 to 15 knots veering south. a chance of
showers. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots becoming northwest 15 to
25 knots. showers likely. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202609250800;;994107

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu sep 24 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...

a 30.4 inch high centered over quebec will weaken to 30.3 inches 
over the great lakes basin as a 29.5 inch low develops over the 
northern rockies. on saturday the high begins shifting northeast 
toward northern quebec while the low deepens and moves north through 
the canadian prairies. sunday through monday, the high shifts east 
to the canadian maritimes, weakening to 30.0 inches. this gradually 
weakens high pressure ridging over lake superior from 30.1 inches 
sunday morning to 29.9 inches by the end of monday as a 29.8 inch 
trough approaches from the west. by tuesday evening the trough will 
move over lake superior at 29.7 inches.




lsz263-250800-
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 thu sep 24 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest late.
a slight chance of showers through midnight. waves calm to
2 feet. 
.friday...southwest winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming northeast 5 to 15 knots
late. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots becoming southeast less
than 10 knots late. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots veering southwest by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming southwest less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots becoming northwest 15 to
25 knots. showers likely. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202609250800;;994108

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu sep 24 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...

a 30.4 inch high centered over quebec will weaken to 30.3 inches 
over the great lakes basin as a 29.5 inch low develops over the 
northern rockies. on saturday the high begins shifting northeast 
toward northern quebec while the low deepens and moves north through 
the canadian prairies. sunday through monday, the high shifts east 
to the canadian maritimes, weakening to 30.0 inches. this gradually 
weakens high pressure ridging over lake superior from 30.1 inches 
sunday morning to 29.9 inches by the end of monday as a 29.8 inch 
trough approaches from the west. by tuesday evening the trough will 
move over lake superior at 29.7 inches.




lsz264-250800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt thu sep 24 2026

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest late.
waves calm to 2 feet. 
.friday...southwest winds less than 10 knots. waves calm to
2 feet. 
.friday night...southeast winds 5 to 15 knots diminishing to less
than 10 knots late. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots veering southwest by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds less than 10 knots veering southwest
after midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers, then showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202609250800;;994109

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu sep 24 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...

a 30.4 inch high centered over quebec will weaken to 30.3 inches 
over the great lakes basin as a 29.5 inch low develops over the 
northern rockies. on saturday the high begins shifting northeast 
toward northern quebec while the low deepens and moves north through 
the canadian prairies. sunday through monday, the high shifts east 
to the canadian maritimes, weakening to 30.0 inches. this gradually 
weakens high pressure ridging over lake superior from 30.1 inches 
sunday morning to 29.9 inches by the end of monday as a 29.8 inch 
trough approaches from the west. by tuesday evening the trough will 
move over lake superior at 29.7 inches.




lsz265-250800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt thu sep 24 2026

.late this afternoon...southeast winds 15 to 25 knots. waves calm
to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south after
midnight, then becoming southwest 5 to 15 knots late. waves calm
to 2 feet. 
.friday...southwest winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 
.tuesday...south winds 20 to 30 knots. a chance of showers, then
showers likely. waves building to 3 to 6 feet occasionally to
8 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202609250800;;994110

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu sep 24 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...

a 30.4 inch high centered over quebec will weaken to 30.3 inches 
over the great lakes basin as a 29.5 inch low develops over the 
northern rockies. on saturday the high begins shifting northeast 
toward northern quebec while the low deepens and moves north through 
the canadian prairies. sunday through monday, the high shifts east 
to the canadian maritimes, weakening to 30.0 inches. this gradually 
weakens high pressure ridging over lake superior from 30.1 inches 
sunday morning to 29.9 inches by the end of monday as a 29.8 inch 
trough approaches from the west. by tuesday evening the trough will 
move over lake superior at 29.7 inches.




lsz266-250800-
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 thu sep 24 2026

.late this afternoon...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south after
midnight, then diminishing to 5 to 15 knots late. waves calm to
2 feet. 
.friday...southwest winds 5 to 15 knots backing northeast late.
waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots increasing to 10 to 20 knots.
waves calm to 2 feet. 
.tuesday...south winds 20 to 30 knots increasing to gales to
35 knots. a chance of showers, then showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202609250800;;994111

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu sep 24 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...

a 30.4 inch high centered over quebec will weaken to 30.3 inches 
over the great lakes basin as a 29.5 inch low develops over the 
northern rockies. on saturday the high begins shifting northeast 
toward northern quebec while the low deepens and moves north through 
the canadian prairies. sunday through monday, the high shifts east 
to the canadian maritimes, weakening to 30.0 inches. this gradually 
weakens high pressure ridging over lake superior from 30.1 inches 
sunday morning to 29.9 inches by the end of monday as a 29.8 inch 
trough approaches from the west. by tuesday evening the trough will 
move over lake superior at 29.7 inches.




lsz267-250800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt thu sep 24 2026

.late this afternoon...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south after
midnight. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots veering southwest in the
afternoon, then veering north late. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight, then increasing to 5 to 15 knots
late. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming southwest less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots. showers likely. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$