fzus61 kbuf 240802
glflo 
expires:202609241500;;967817

open lake forecast for lake ontario
national weather service buffalo ny
402 am 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 30.6 inch high will remain centered over 
southern quebec through saturday while gradually weakening to 30.3 
inches late this week. 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.


loz062-241500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu sep 24 2026

.today...east winds 5 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots becoming northeast. waves
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. 
.saturday...north winds 5 to 15 knots. 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 southwest.
waves 2 feet or less. 

$$

fzus61 kbuf 240802
glflo 
expires:202609241500;;967818

open lake forecast for lake ontario
national weather service buffalo ny
402 am 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 30.6 inch high will remain centered over 
southern quebec through saturday while gradually weakening to 30.3 
inches late this week. 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.


loz063>065-241500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu sep 24 2026

.today...southeast winds 5 to 15 knots becoming northeast 15 to
20 knots. waves 2 feet or less. 
.tonight...northeast winds 15 to 20 knots diminishing to 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. 
.saturday...north winds 15 to 20 knots. waves 2 to 4 feet. 
.sunday...north winds 15 to 20 knots becoming northeast 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.monday...northeast winds 5 to 15 knots becoming north. waves
1 to 3 feet subsiding to 1 foot or less. 

$$

fzus61 kcle 240738
glfle 
expires:202609241415;;967010

open lake forecast for lake erie
national weather service cleveland oh
338 am 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 of 30.40 inches will build south across the great 
lakes today and influence the great lakes through tuesday.


lez165>167-241415-
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-
338 am edt thu sep 24 2026

.today...east winds 15 to 20 knots becoming northeast. waves 2 to
4 feet. 
.tonight...east winds 15 to 20 knots diminishing to 5 to
10 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. waves 1 to 3 feet. 
.sunday...north winds 5 to 15 knots. waves 2 feet or less. 
.monday...north winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus61 kcle 240738
glfle 
expires:202609241415;;967011

open lake forecast for lake erie
national weather service cleveland oh
338 am 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 of 30.40 inches will build south across the great 
lakes today and influence the great lakes through tuesday.


lez061-168-169-241415-
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-
338 am edt thu sep 24 2026

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

$$

fzus61 kcle 240738
glfle 
expires:202609241415;;967009

open lake forecast for lake erie
national weather service cleveland oh
338 am 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 of 30.40 inches will build south across the great 
lakes today and influence the great lakes through tuesday.


lez162>164-241415-
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-
338 am edt thu sep 24 2026

.today...east winds 15 to 20 knots. waves 2 to 4 feet. 
.tonight...east winds 15 to 20 knots diminishing to 5 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. 
.sunday...north winds 5 to 10 knots. waves 1 foot or less. 
.monday...north winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus63 kdtx 240743
glfsc 
expires:202609241600;;967235

lake st clair forecast
national weather service detroit/pontiac mi
343 am 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, 30.60 inches, will
travel from quebec and will center over the northern great lakes
by friday afternoon. while this continues to bring brisk east to
northeast flow this morning, the approaching high pressure system
will decrease wind speeds through the afternoon and evening.


lcz460-241600-
lake st clair-
343 am edt thu sep 24 2026

.today...east winds 10 to 15 knots. sunny. waves 2 feet or less.
.tonight...east winds 10 to 15 knots. clear becoming partly cloudy.
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 diminishing to 5 to 10
knots after midnight. mostly clear. waves 2 feet or less.
.saturday...north winds 5 to 10 knots. clear. waves 2 feet or less.
.sunday...north winds 10 to 15 knots. clear. waves 2 feet or less.
.monday...east winds 5 to 10 knots. clear. waves 2 feet or less.

$$

fzus63 kdtx 240743
glflh 
expires:202609241600;;967231

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am 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, 30.60 inches, will
travel from quebec and will center over the northern great lakes
by friday afternoon. while this continues to bring brisk east to
northeast flow this morning, the approaching high pressure system
will decrease wind speeds through the afternoon and evening.


lhz361-241600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
343 am edt thu sep 24 2026

.today...southeast winds 5 to 10 knots becoming east 10 to
15 knots in the afternoon. waves 1 to 3 feet. 
.tonight...east winds 10 to 15 knots becoming light and variable.
waves 2 feet or less. 
.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. 
.sunday...light and variable winds. waves nearly calm. 
.monday...light and variable winds. waves nearly calm. 


$$

fzus63 kdtx 240743
glflh 
expires:202609241600;;967232

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am 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, 30.60 inches, will
travel from quebec and will center over the northern great lakes
by friday afternoon. while this continues to bring brisk east to
northeast flow this morning, the approaching high pressure system
will decrease wind speeds through the afternoon and evening.


lhz362-363-241600-
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-
343 am edt thu sep 24 2026

.today...east winds 10 to 15 knots decreasing to 5 to 10 knots in
the afternoon. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 10 knots veering to the east
after midnight. 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 in the morning becoming
light and variable...then becoming north 5 to 10 knots late in
the afternoon becoming light and variable. waves 2 feet or less. 
.sunday...light and variable winds becoming north 5 to 10 knots
by midnight. 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. 


$$

fzus63 kdtx 240743
glflh 
expires:202609241600;;967233

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am 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, 30.60 inches, will
travel from quebec and will center over the northern great lakes
by friday afternoon. while this continues to bring brisk east to
northeast flow this morning, the approaching high pressure system
will decrease wind speeds through the afternoon and evening.


lhz462>464-241600-
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-
343 am edt thu sep 24 2026

.today...east winds 10 to 15 knots decreasing to 5 to 10 knots in
the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in the
late morning and afternoon. 
.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 backing to the north early in
the afternoon. waves 2 feet or less. 
.friday night...north winds 10 to 15 knots becoming northeast
5 to 10 knots after midnight. waves 1 to 3 feet. 
.saturday...north winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon...then becoming northeast 5 to
10 knots late in the evening. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots increasing to 10 to 15 knots
early in the evening...then decreasing to 5 to 10 knots by
midnight. waves 2 feet or less. 
.monday...north winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 


$$

fzus63 kmkx 240807
glflm 
expires:202609241530;;968169

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am 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 around 30.6 inches will linger over 
southeast ontario and southern quebec today, weakening to around 
30.4 inches. modest easterly winds continue through this morning, 
before weakening into the afternoon. light east to southeast winds
then prevail for the rest of the week and into the weekend, as 
the high reorients from the northern great lakes to james bay.


lmz080-669-671-673-675-777-779-870-872-874-876-878-241530-
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-
307 am cdt thu sep 24 2026

sheboygan wi to pentwater mi south...

.today...east winds 10 to 20 kt diminishing to 5 to 10 kt. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.tonight...east winds 10 to 15 kt becoming southeast. waves 2 to
4 ft. 
.friday...southeast winds 10 to 15 kt becoming east. waves 1 to
3 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 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.saturday night...east winds 5 to 10 kt becoming southeast. waves
1 to 2 ft. 
.sunday...southeast winds 5 to 10 kt becoming east. waves 1 to
2 ft. 
.monday...east winds 5 to 10 kt becoming southeast. waves 1 ft or
less.  

$$

fzus63 kmkx 240807
glflm 
expires:202609241530;;968168

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am 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 around 30.6 inches will linger over 
southeast ontario and southern quebec today, weakening to around 
30.4 inches. modest easterly winds continue through this morning, 
before weakening into the afternoon. light east to southeast winds
then prevail for the rest of the week and into the weekend, as 
the high reorients from the northern great lakes to james bay.


lmz261-362-364-366-563-565-567-868-241530-
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-
307 am cdt thu sep 24 2026

sheboygan wi to pentwater mi north...

.today...southeast winds 10 to 20 kt becoming northeast. waves
2 to 4 ft. 
.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...east winds 5 to 10 kt. waves 1 to 2 ft. 
.saturday...southeast winds 5 to 10 kt. waves 1 to 2 ft. 
.saturday night...east winds 5 to 10 kt becoming southeast. waves
1 ft or less. 
.sunday...south winds 5 to 10 kt becoming southwest. waves 1 ft
or less. 
.monday...southeast winds 5 to 10 kt becoming southwest. waves
nearly calm.  

$$

fzus63 kmqt 240802
glfls 
expires:202609242000;;967767

open lake forecast for lake superior
national weather service marquette mi
401 am 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 30.6 inch high centered over quebec begins to break down today, 
weakening to 30.4 inches tonight. by late friday, the high weakens 
to 30.3 inches over the eastern 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.




lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt thu sep 24 2026 /301 am cdt thu sep 24 2026/

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots backing east late. a slight
chance of showers by mid afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast less than
10 knots after midnight, then veering south late. a slight chance
of showers through midnight. patchy fog after midnight. waves
calm to 2 feet. 
.friday...south winds less than 10 knots backing north in the
afternoon, then becoming northeast 5 to 15 knots late. patchy fog
through early afternoon. 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...east winds 5 to 15 knots veering south after
midnight. a chance of showers. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots becoming southwest less than
10 knots. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202609242000;;967768

open lake forecast for lake superior
national weather service marquette mi
401 am 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 30.6 inch high centered over quebec begins to break down today, 
weakening to 30.4 inches tonight. by late friday, the high weakens 
to 30.3 inches over the eastern 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.




lsz263-242000-
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 thu sep 24 2026

.early this morning...south winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...south winds 5 to 15 knots backing east late. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots becoming southwest 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 veering southeast after
midnight. 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...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202609242000;;967769

open lake forecast for lake superior
national weather service marquette mi
401 am 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 30.6 inch high centered over quebec begins to break down today, 
weakening to 30.4 inches tonight. by late friday, the high weakens 
to 30.3 inches over the eastern 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.




lsz264-242000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt thu sep 24 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots backing southeast late. 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 backing southeast
late. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. 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 becoming southwest less than
10 knots. waves calm to 2 feet. 
.monday...southwest winds less than 10 knots becoming south 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202609242000;;967770

open lake forecast for lake superior
national weather service marquette mi
401 am 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 30.6 inch high centered over quebec begins to break down today, 
weakening to 30.4 inches tonight. by late friday, the high weakens 
to 30.3 inches over the eastern 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.




lsz265-242000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt thu sep 24 2026

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...south winds 10 to 20 knots backing southeast in the
afternoon, then increasing to 15 to 25 knots late. 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 east in the
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. 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 veering southwest. waves calm
to 2 feet. 
.monday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202609242000;;967771

open lake forecast for lake superior
national weather service marquette mi
401 am 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 30.6 inch high centered over quebec begins to break down today, 
weakening to 30.4 inches tonight. by late friday, the high weakens 
to 30.3 inches over the eastern 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.




lsz266-242000-
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 thu sep 24 2026

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...south winds 10 to 20 knots backing southeast in the
afternoon. 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...south winds 5 to 15 knots becoming southwest less than
10 knots in the afternoon, then backing east late. waves calm to
2 feet. 
.friday night...southeast winds 5 to 15 knots. 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 veering southwest. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202609242000;;967772

open lake forecast for lake superior
national weather service marquette mi
401 am 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 30.6 inch high centered over quebec begins to break down today, 
weakening to 30.4 inches tonight. by late friday, the high weakens 
to 30.3 inches over the eastern 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.




lsz267-242000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt thu sep 24 2026

.early this morning...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.today...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 backing east late. waves calm
to 2 feet. 
.friday night...east winds 5 to 15 knots. 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. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$