fzus61 kbuf 270802
glflo 
expires:202609271500;;128102

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun sep 27 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 across ontario and southern 
quebec will drift to eastern quebec and labrador today. meanwhile, 
29.2 inch low pressure east of the delmarva will move to near the 
jersey shore and long island through tonight, then meander northeast 
along the new england coast monday through tuesday while gradually 
filling to 29.8 inches.


loz062-271500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sun sep 27 2026

.today...northeast winds 15 to 20 knots. a chance of showers
late. waves 3 to 6 feet. 
.tonight...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely early, then a chance of showers late in
the evening. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.monday...northeast winds 5 to 15 knots becoming north less than
10 knots. waves 1 to 3 feet. 
.monday night...west winds less than 10 knots becoming north.
waves 1 foot or less. 
.tuesday...north winds less than 10 knots. waves 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.thursday...southwest winds 10 to 15 knots becoming west. a
chance of showers thursday night. waves 1 to 3 feet. 

$$

fzus61 kbuf 270802
glflo 
expires:202609271500;;128103

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun sep 27 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 across ontario and southern 
quebec will drift to eastern quebec and labrador today. meanwhile, 
29.2 inch low pressure east of the delmarva will move to near the 
jersey shore and long island through tonight, then meander northeast 
along the new england coast monday through tuesday while gradually 
filling to 29.8 inches.


loz063>065-271500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun sep 27 2026

.today...northeast winds to 30 knots diminishing to 15 to
25 knots. showers this afternoon. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.tonight...northeast winds 15 to 25 knots. showers early, then a
chance of showers late in the evening. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.monday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday night...northeast winds 5 to 15 knots becoming north.
waves 2 feet or less. 
.tuesday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 10 knots. waves 2 feet or less. 
.thursday...south winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers thursday night. waves 1 to 3 feet
building to 2 to 4 feet. 

$$

fzus61 kcle 270745
glfle 
expires:202609271415;;127609

open lake forecast for lake erie
national weather service cleveland oh
345 am edt sun sep 27 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 30.20 inches will persist over the great lakes 
through tuesday before moving off to the east tuesday night. a 
weak cold front will approach the region from the west wednesday
night.


lez164>167-271415-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
345 am edt sun sep 27 2026

.today...north winds 5 to 15 knots. waves 1 to 3 feet. 
.tonight...north winds 15 to 20 knots becoming northeast 10 to
15 knots. waves 2 to 4 feet. 
.monday...north winds 5 to 15 knots. waves 1 to 3 feet. 
.monday night...north winds less than 10 knots becoming
northwest. waves 1 foot or less. 
.tuesday...northwest winds 10 knots or less becoming south. waves
2 feet or less. 
.wednesday...south winds 5 to 15 knots. waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers. waves 1 to 3 feet. 

$$

fzus61 kcle 270745
glfle 
expires:202609271415;;127610

open lake forecast for lake erie
national weather service cleveland oh
345 am edt sun sep 27 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 30.20 inches will persist over the great lakes 
through tuesday before moving off to the east tuesday night. a 
weak cold front will approach the region from the west wednesday
night.


lez061-168-169-271415-
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-
345 am edt sun sep 27 2026

.today...northeast winds 10 to 15 knots increasing to 15 to
20 knots. waves 2 to 4 feet. 
.tonight...northeast winds 15 to 20 knots. waves 2 to 4 feet. 
.monday...northeast winds 5 to 15 knots becoming north. waves
1 to 3 feet subsiding to 1 foot or less. 
.monday night...northeast winds less than 10 knots. waves 1 foot
or less. 
.tuesday...west winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 15 knots. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers. waves 1 to 3 feet. 

$$

fzus61 kcle 270745
glfle 
expires:202609271415;;127608

open lake forecast for lake erie
national weather service cleveland oh
345 am edt sun sep 27 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 30.20 inches will persist over the great lakes 
through tuesday before moving off to the east tuesday night. a 
weak cold front will approach the region from the west wednesday
night.


lez162-163-271415-
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-
345 am edt sun sep 27 2026

.today...north winds 5 to 10 knots. waves 1 to 2 feet. 
.tonight...north winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...north winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 
.monday night...north winds less than 10 knots. waves 1 foot or
less. 
.tuesday...northwest winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.thursday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers. waves 1 to 2 feet. 

$$

fzus63 kdtx 270753
glfsc 
expires:202609271600;;127741

lake st clair forecast
national weather service detroit/pontiac mi
353 am edt sun sep 27 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...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.


lcz460-271600-
lake st clair-
353 am edt sun sep 27 2026

.today...north winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon. sunny. waves 2 feet or less.
.tonight...north winds 10 to 15 knots diminishing to 5 to 10 knots
early in the morning. clear. waves 2 feet or less.
.monday...north winds 5 to 10 knots. mostly sunny. waves 2 feet or
less.
.monday night...north winds 5 to 10 knots becoming light and
variable. mostly clear. waves 2 feet or less.
.tuesday...light and variable winds becoming southeast 5 to 10 knots
in the afternoon and evening. mostly clear. patchy fog in the
morning. waves 2 feet or less.
.wednesday...south winds 10 to 15 knots. partly cloudy. waves 2 feet
or less.
.thursday...west winds 10 to 15 knots. mostly cloudy with a chance
of showers. waves 2 feet or less.

$$

fzus63 kdtx 270753
glflh 
expires:202609271600;;127742

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sun sep 27 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...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.


lhz361-271600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
353 am edt sun sep 27 2026

.today...northeast winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.tonight...light and variable winds becoming northwest 5 to
10 knots after midnight. waves 2 feet or less. 
.monday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.monday night...light and variable winds. patchy fog after
midnight. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon. patchy fog in the morning. waves
2 feet or less. 
.wednesday...south winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots becoming west 10 to
15 knots until early evening...then veering to the northwest by
midnight. a chance of showers until afternoon. waves 1 to 3 feet.


$$

fzus63 kdtx 270753
glflh 
expires:202609271600;;127743

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sun sep 27 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...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.


lhz362-363-271600-
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-
353 am edt sun sep 27 2026

.today...north winds 5 to 10 knots. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday night...light and variable winds. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then becoming south 10 to
15 knots late in the evening. waves 2 feet or less. 
.wednesday...south winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots by midnight. a chance of showers. waves 1 to
3 feet building to 2 to 4 feet . 


$$

fzus63 kdtx 270753
glflh 
expires:202609271600;;127744

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sun sep 27 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...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.


lhz462>464-271600-
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-
353 am edt sun sep 27 2026

.today...northeast winds 5 to 10 knots becoming north 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon. 
.tonight...north winds 10 to 15 knots decreasing to 5 to 10 knots
early in the morning. waves 3 to 5 feet subsiding to 1 to 3 feet
after midnight. 
.monday...north winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. waves 1 to 3 feet. 
.monday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then becoming south 10 to
15 knots late in the evening. waves 2 feet or less. 
.wednesday...south winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots veering to the
northwest by midnight. a chance of showers. waves 1 to 3 feet
building to 2 to 4 feet by midnight. 


$$

fzus63 kmkx 270804
glflm 
expires:202609271530;;128222

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt sun sep 27 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...

no major changes to the going forecast this morning. high 
pressure of 30.3 inches centered near the james bay will gradually
move east through today while a second high pressure around 30.1 
inches across the western great lakes region remains near 
stationary through monday. therefore, dry weather and light winds 
are expected into early next week. 

breezy southerly winds are expected tuesday through thursday next
week, as high pressure departs to the east ahead of an approaching
trough. wind gust to 25 knots are possible along with building 
waves, particularly across central and northern portions of the 
lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-271530-
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-
304 am cdt sun sep 27 2026

sheboygan wi to pentwater mi south...

.today...northeast winds 5 to 10 kt becoming north early this
afternoon, then becoming 10 to 20 kt late. waves 1 to 2 ft. 
.tonight...north winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 1 to 3 ft. 
.monday...north winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 3 ft. 
.monday night...northeast winds 10 to 15 kt veering to southeast
less than 10 kt overnight. waves 1 to 2 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 1 to 3 ft. 
.tuesday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday...south winds 10 to 20 kt. chance of showers. waves
4 to 6 ft occasionally to 8 ft. 
.thursday...southwest winds 10 to 20 kt becoming west. showers
likely. waves 2 to 4 ft.  

$$

fzus63 kmkx 270804
glflm 
expires:202609271530;;128221

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt sun sep 27 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...

no major changes to the going forecast this morning. high 
pressure of 30.3 inches centered near the james bay will gradually
move east through today while a second high pressure around 30.1 
inches across the western great lakes region remains near 
stationary through monday. therefore, dry weather and light winds 
are expected into early next week. 

breezy southerly winds are expected tuesday through thursday next
week, as high pressure departs to the east ahead of an approaching
trough. wind gust to 25 knots are possible along with building 
waves, particularly across central and northern portions of the 
lake.


lmz261-362-364-366-563-565-567-868-271530-
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-
304 am cdt sun sep 27 2026

sheboygan wi to pentwater mi north...

.today...southeast winds less than 10 kt becoming east late this
morning, then becoming northwest early this afternoon becoming
northwest 10 to 15 kt late. waves 1 to 2 ft. 
.tonight...northwest winds 10 to 15 kt becoming north. waves 1 to
2 ft. 
.monday...north winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 ft or less. 
.monday night...northeast winds 10 to 15 kt veering to southeast
less than 10 kt overnight. waves 1 ft or less. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 ft or less building to 2 to 4 ft. 
.tuesday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south. chance
of showers. waves 4 to 6 ft occasionally to 8 ft. 
.thursday...west winds 10 to 20 kt becoming northwest 15 to
25 kt. chance of showers. waves 2 to 4 ft.  

$$

fzus63 kmqt 270801
glfls 
expires:202609272000;;127961

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 27 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 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by tuesday. tuesday night through wednesday night, a 
29.3 inch low moves across the far northern canadian prairie to 
hudson bay, dragging a 29.7 inch trough across lake superior 
wednesday night. high pressure of 30.2 inches returns to the upper 
great lakes by friday.




lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun sep 27 2026 /301 am cdt sun sep 27 2026/

.early this morning...south winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.today...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. waves
calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots veering southwest by mid
afternoon. a chance of rain through early afternoon, then rain
likely by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a chance of rain. waves calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots veering northwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202609272000;;127962

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 27 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 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by tuesday. tuesday night through wednesday night, a 
29.3 inch low moves across the far northern canadian prairie to 
hudson bay, dragging a 29.7 inch trough across lake superior 
wednesday night. high pressure of 30.2 inches returns to the upper 
great lakes by friday.




lsz263-272000-
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 sun sep 27 2026

.early this morning...south winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.today...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. waves
calm to 2 feet. 
.monday...northeast winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming east 5 to 15 knots late.
waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots. a chance of rain by mid
afternoon. waves building to 1 to 3 feet. 
.tuesday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a chance of rain. waves subsiding
to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots veering west. waves
calm to 2 feet. 
.thursday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202609272000;;127963

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 27 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 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by tuesday. tuesday night through wednesday night, a 
29.3 inch low moves across the far northern canadian prairie to 
hudson bay, dragging a 29.7 inch trough across lake superior 
wednesday night. high pressure of 30.2 inches returns to the upper 
great lakes by friday.




lsz264-272000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sun sep 27 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.tonight...west winds less than 10 knots becoming north 5 to
15 knots late. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots becoming northeast less than
10 knots in the afternoon, then veering east late. waves calm to
2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots. a chance of rain by mid
afternoon. waves building to 1 to 3 feet. 
.tuesday night...south winds 5 to 15 knots veering southwest
after midnight. rain likely through midnight, then a chance of
rain after midnight. waves subsiding to calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. waves calm to 2 feet. 
.thursday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202609272000;;127964

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 27 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 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by tuesday. tuesday night through wednesday night, a 
29.3 inch low moves across the far northern canadian prairie to 
hudson bay, dragging a 29.7 inch trough across lake superior 
wednesday night. high pressure of 30.2 inches returns to the upper 
great lakes by friday.




lsz265-272000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sun sep 27 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering northwest late.
waves calm to 2 feet. 
.monday...north winds 5 to 15 knots veering east late. waves calm
to 2 feet. 
.monday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.tuesday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. rain likely through midnight, then a
chance of rain after midnight. waves subsiding to calm to 2 feet.
.wednesday...south winds 10 to 20 knots becoming west 15 to
25 knots. a chance of rain. waves calm to 2 feet. 
.thursday...west gales to 35 knots becoming northwest 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202609272000;;127965

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 27 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 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by tuesday. tuesday night through wednesday night, a 
29.3 inch low moves across the far northern canadian prairie to 
hudson bay, dragging a 29.7 inch trough across lake superior 
wednesday night. high pressure of 30.2 inches returns to the upper 
great lakes by friday.




lsz266-272000-
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 sun sep 27 2026

.early this morning...south winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...south winds 5 to 15 knots becoming southwest less than
10 knots late. waves calm to 2 feet. 
.tonight...southwest winds less than 10 knots veering west after
midnight, then becoming north 5 to 15 knots late. waves calm to
2 feet. 
.monday...north winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.tuesday night...south winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. rain likely through midnight, then a
chance of rain after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.thursday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202609272000;;127966

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 27 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 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by tuesday. tuesday night through wednesday night, a 
29.3 inch low moves across the far northern canadian prairie to 
hudson bay, dragging a 29.7 inch trough across lake superior 
wednesday night. high pressure of 30.2 inches returns to the upper 
great lakes by friday.




lsz267-272000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sun sep 27 2026

.early this morning...south winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...south winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then backing north late. waves calm to
2 feet. 
.tonight...north winds less than 10 knots becoming northwest 5 to
15 knots after midnight. patchy fog through midnight. waves calm
to 2 feet. 
.monday...north winds 5 to 15 knots backing northwest in the
afternoon. waves calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots becoming south less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves building to 1 to 3 feet. 
.tuesday night...south winds 15 to 25 knots. a chance of rain
through midnight, then rain likely after midnight. waves building
to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday...south winds 10 to 20 knots. a chance of rain. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.thursday...west winds 15 to 25 knots becoming northwest 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$