fzus61 kbuf 180202
glflo 
expires:202609180900;;631579

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 17 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...a weak front will move southeast and away from the lake 
overnight. a 30.3 inch high will build from northwest ontario friday 
to southern quebec saturday, then off the new england coast saturday 
night. a weak 29.9 inch low is then forecast to move east across 
ohio and pennsylvania late saturday night through sunday. another 
30.3 inch high will then build from northwest ontario sunday night 
to quebec by tuesday and wednesday while gradually strengthening to 
30.6 inches.


loz063>065-180900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu sep 17 2026

.overnight...northwest winds 5 to 15 knots becoming north.
waves 2 feet or less. 
.friday...north winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots. a chance of showers
overnight. waves 2 feet or less. 
.sunday...east winds 10 to 15 knots becoming northeast and
increasing to 15 to 25 knots. a chance of showers during the day.
waves 1 to 3 feet building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet.
waves occasionally around 9 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east. a chance
of showers. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 

$$

fzus61 kbuf 180202
glflo 
expires:202609180900;;631578

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 17 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...a weak front will move southeast and away from the lake 
overnight. a 30.3 inch high will build from northwest ontario friday 
to southern quebec saturday, then off the new england coast saturday 
night. a weak 29.9 inch low is then forecast to move east across 
ohio and pennsylvania late saturday night through sunday. another 
30.3 inch high will then build from northwest ontario sunday night 
to quebec by tuesday and wednesday while gradually strengthening to 
30.6 inches.


loz062-180900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu sep 17 2026

.overnight...northwest winds 10 to 15 knots becoming north.
waves 1 to 2 feet. 
.friday...north winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 
.friday night...north winds 5 to 15 knots becoming east 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.saturday...east winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday night...east winds 10 to 15 knots. a chance of showers
overnight. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. a chance of showers during the day. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers. waves 5 to 9 feet. waves occasionally around 11 feet. 

$$

fzus61 kcle 180127
glfle 
expires:202609180815;;630710

open lake forecast for lake erie
national weather service cleveland oh
927 pm edt thu sep 17 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 30.20 inches will build south into lake erie 
friday. low pressure 29.90 inches will track east across the great
lakes on saturday and extend a cold front through the area on 
sunday. a trough averaging 29.90 inches will linger behind the 
front into early next week.


lez164>167-180815-
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-
927 pm edt thu sep 17 2026

.overnight...north winds 5 to 15 knots becoming northeast.
waves 2 feet or less building to 2 to 3 feet. 
.friday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...northeast winds 5 to 15 knots becoming east.
waves 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
1 to 3 feet. 
.saturday night...east winds 5 to 15 knots becoming northeast.
showers. waves 1 to 3 feet. 
.sunday...northeast winds 15 to 25 knots. showers likely during
the day. waves 2 to 4 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.monday...east winds to 30 knots becoming northeast. a chance of
showers monday night. waves 7 to 11 feet. waves occasionally
around 14 feet. 
.tuesday...east winds to 30 knots. a chance of showers. waves
7 to 11 feet subsiding to 6 to 9 feet. waves occasionally around
14 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180127
glfle 
expires:202609180815;;630711

open lake forecast for lake erie
national weather service cleveland oh
927 pm edt thu sep 17 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 30.20 inches will build south into lake erie 
friday. low pressure 29.90 inches will track east across the great
lakes on saturday and extend a cold front through the area on 
sunday. a trough averaging 29.90 inches will linger behind the 
front into early next week.


lez061-168-169-180815-
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-
927 pm edt thu sep 17 2026

.overnight...northwest winds 5 to 15 knots becoming
northeast. waves 2 feet or less. 
.friday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.friday night...northeast winds 10 to 15 knots becoming east.
waves 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...east winds 5 to 15 knots. showers likely in the
evening, then showers overnight. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. a chance of showers during the day. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...northeast winds to 30 knots becoming east. a chance of
showers monday night. waves 5 to 8 feet. waves occasionally
around 10 feet. 
.tuesday...east winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers. waves 5 to 8 feet. waves occasionally around
10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180127
glfle 
expires:202609180815;;630709

open lake forecast for lake erie
national weather service cleveland oh
927 pm edt thu sep 17 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 30.20 inches will build south into lake erie 
friday. low pressure 29.90 inches will track east across the great
lakes on saturday and extend a cold front through the area on 
sunday. a trough averaging 29.90 inches will linger behind the 
front into early next week.


lez162-163-180815-
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-
927 pm edt thu sep 17 2026

.overnight...northeast winds 5 to 15 knots. a slight chance
of showers and thunderstorms. waves 1 to 3 feet. 
.friday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday night...northeast winds 10 to 15 knots becoming east.
waves 2 feet or less. 
.saturday...east winds around 10 knots. showers likely. waves
2 feet or less. 
.saturday night...east winds around 10 knots becoming northeast.
showers. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. showers likely with a chance of thunderstorms during
the day. waves 1 to 3 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.monday...northeast winds to 30 knots. a chance of showers. waves
6 to 9 feet. waves occasionally around 11 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers. waves 5 to 9 feet subsiding to 4 to 7 feet. waves
occasionally around 11 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 180134
glflh 
expires:202609180945;;631027

open lake forecast for lake huron
national weather service detroit/pontiac mi
934 pm edt thu sep 17 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 secondary cold front passes southward through the
region thursday night into early friday before plains low
pressure arrives this weekend.


lhz462>464-180945-
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-
934 pm edt thu sep 17 2026

.rest of tonight...north winds 5 to 10 knots increasing to 10 to
15 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet early in the morning. 
.friday...north winds 15 to 20 knots decreasing to 10 to 15 knots
in the late morning and afternoon. waves 3 to 5 feet. 
.friday night...northeast winds 10 to 15 knots veering to the
east after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet
after midnight. 
.saturday...east winds 10 to 15 knots becoming southeast 5 to
10 knots in the late morning and afternoon. a chance of showers.
waves 1 to 3 feet. 
.saturday night...east winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. a chance of showers. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 20 to
25 knots. waves 1 to 3 feet building to 4 to 6 feet. waves
occasionally around 8 feet. 
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tuesday...northeast winds 15 to 20 knots becoming east 20 to
25 knots by midnight. waves 3 to 5 feet. 


$$

fzus63 kdtx 180134
glfsc 
expires:202609180945;;631030

lake st clair forecast
national weather service detroit/pontiac mi
934 pm edt thu sep 17 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 secondary cold front passes southward through the
region thursday night into early friday before plains low
pressure arrives this weekend.


lcz460-180945-
lake st clair-
934 pm edt thu sep 17 2026

.rest of tonight...north winds 10 to 15 knots. partly cloudy. waves
2 feet or less.
.friday...north winds 10 to 15 knots becoming northeast 5 to 10
knots early in the afternoon...then increasing to 10 to 15 knots
late in the afternoon. mostly sunny. waves 2 feet or less.
.friday night...northeast winds 15 to 20 knots diminishing to 10 to
15 knots in the late evening and overnight. partly cloudy early in
the evening becoming mostly cloudy. waves 1 to 3 feet.
.saturday...east winds 10 to 15 knots diminishing to 5 to 10 knots
in the late morning and early afternoon...then increasing to 10 to
15 knots early in the afternoon. mostly cloudy with showers likely.
waves 2 feet or less.
.saturday night...east winds 10 to 15 knots. light showers .. then
showers likely after midnight. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots increasing to 15 to 20
knots in the evening. mostly cloudy with showers likely in the
morning...then partly cloudy with a chance of light showers in the
afternoon and evening. waves 1 to 3 feet.
.monday...northeast winds to 30 knots. mostly cloudy. waves 2 to 4
feet. a small craft advisory may be needed.
.tuesday...northeast winds to 30 knots. partly cloudy. a chance of
showers. waves 2 to 4 feet.

$$

fzus63 kdtx 180134
glflh 
expires:202609180945;;631025

open lake forecast for lake huron
national weather service detroit/pontiac mi
934 pm edt thu sep 17 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 secondary cold front passes southward through the
region thursday night into early friday before plains low
pressure arrives this weekend.


lhz361-180945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
934 pm edt thu sep 17 2026

.rest of tonight...northwest winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots becoming light and
variable. waves 2 feet or less. 
.friday night...light and variable winds becoming east 5 to
10 knots after midnight. waves 2 feet or less. 
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and early afternoon...then becoming
east 5 to 10 knots early in the afternoon. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots early in the evening
becoming light and variable...then becoming northeast 5 to
10 knots after midnight. waves 2 feet or less. 
.sunday...north winds 5 to 10 knots becoming northeast 15 to
20 knots with gusts to around 30 knots late in the evening. waves
2 feet or less building to 3 to 5 feet late in the evening. 
.monday...northeast winds 15 to 20 knots becoming east 10 to
15 knots in the late morning and early afternoon...then becoming
northeast 5 to 10 knots early in the evening becoming east 15 to
20 knots by midnight. waves 3 to 5 feet subsiding to 1 to 3 feet
early in the evening...then building to 2 to 4 feet by midnight. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
with gusts to around 30 knots . waves 3 to 5 feet. 


$$

fzus63 kdtx 180134
glflh 
expires:202609180945;;631026

open lake forecast for lake huron
national weather service detroit/pontiac mi
934 pm edt thu sep 17 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 secondary cold front passes southward through the
region thursday night into early friday before plains low
pressure arrives this weekend.


lhz362-363-180945-
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-
934 pm edt thu sep 17 2026

.rest of tonight...north winds 5 to 10 knots increasing to 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet early in
the morning. 
.friday...north winds 15 to 20 knots becoming northeast 5 to
10 knots. waves 2 to 4 feet. 
.friday night...northeast winds 5 to 10 knots veering to the east
after midnight. waves 1 to 3 feet. 
.saturday...east winds 5 to 10 knots. a chance of showers in the
morning. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots backing to the
northeast after midnight. a chance of showers in the evening.
waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots increasing to 20 to
25 knots late in the evening. waves 1 to 3 feet building to 5 to
7 feet. waves occasionally around 10 feet. 
.monday...northeast winds 15 to 20 knots. gusts to 30 knots early
in the evening. waves 4 to 6 feet. 
.tuesday...east winds 15 to 20 knots. gusts to 30 knots. waves
4 to 6 feet. 


$$

fzus63 kmkx 180119
glflm 
expires:202609180915;;630544

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
819 pm cdt thu sep 17 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...

30.4 inch high pressure will shift from the canadian great plains
into ontario tonight, maintaining east-northeast winds across 
lake michigan. 29.9 inch low pressure will develop near the 
missouri river friday afternoon, moving over or just south of 
waters during the day on saturday. winds will veer east- 
southeasterly ahead of the low, becoming gusty at points. a few 
gusts could approach gale thresholds, particularly on friday night
and saturday morning. not expecting any borderline gales to be 
prolonged or widespread enough to warrant gale warnings, but will 
continue to monitor trends. areas of widespread showers & storms 
will accompany the approaching/passing area of low pressure friday
night through at least saturday night, with widespread severe 
weather not expected at this time. 

winds will trend northeasterly sunday through monday night as the 
aforementioned area of low pressure slowly moves into the ohio river 
valley. additional rain showers will accompany the passing low, with 
thunder and severe weather hazards appearing unlikely at this time. 
30.5 inch high pressure will concurrently slide into ontario from
the canadian great plains, with a compacted pressure gradient 
allowing for gusty winds through most of the late weekend/early 
week time frame. similar to saturday, gusts could occasionally 
approach gale thresholds during the sunday-monday night time 
frame, with conditions not expected to be widespread enough for 
gale warnings at this time. winds will steadily taper tuesday 
through wednesday as a new area of 30.3 inch high pressure builds
into northern wisconsin.


lmz080-669-671-673-675-777-779-870-872-874-876-878-180915-
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-
819 pm cdt thu sep 17 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 20 kt becoming northeast.
isolated showers through early evening. waves 2 to 4 ft. 
.friday...east winds 10 to 20 kt becoming northeast. waves 3 to
5 ft. 
.friday night...east winds 10 to 20 kt increasing to 30 kt.
chance of showers in the evening, then showers overnight. waves
2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. 
.saturday...southeast winds to 30 kt. showers. waves 5 to 8 ft
occasionally to 10 ft. 
.saturday night...east winds 10 to 20 kt becoming northeast.
showers. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.sunday...northeast winds 15 to 25 kt increasing to 30 kt. chance
of showers. waves 6 to 9 ft occasionally to 12 ft building to
8 to 11 ft occasionally to 14 ft. 
.sunday night...northeast winds to 30 kt becoming east. chance of
showers. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.monday...east winds to 30 kt becoming northeast. chance of
showers. waves 8 to 11 ft occasionally to 14 ft building to 8 to
12 ft occasionally to 16 ft. 
.tuesday...east winds 15 to 25 kt becoming northeast. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 180119
glflm 
expires:202609180915;;630543

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
819 pm cdt thu sep 17 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...

30.4 inch high pressure will shift from the canadian great plains
into ontario tonight, maintaining east-northeast winds across 
lake michigan. 29.9 inch low pressure will develop near the 
missouri river friday afternoon, moving over or just south of 
waters during the day on saturday. winds will veer east- 
southeasterly ahead of the low, becoming gusty at points. a few 
gusts could approach gale thresholds, particularly on friday night
and saturday morning. not expecting any borderline gales to be 
prolonged or widespread enough to warrant gale warnings, but will 
continue to monitor trends. areas of widespread showers & storms 
will accompany the approaching/passing area of low pressure friday
night through at least saturday night, with widespread severe 
weather not expected at this time. 

winds will trend northeasterly sunday through monday night as the 
aforementioned area of low pressure slowly moves into the ohio river 
valley. additional rain showers will accompany the passing low, with 
thunder and severe weather hazards appearing unlikely at this time. 
30.5 inch high pressure will concurrently slide into ontario from
the canadian great plains, with a compacted pressure gradient 
allowing for gusty winds through most of the late weekend/early 
week time frame. similar to saturday, gusts could occasionally 
approach gale thresholds during the sunday-monday night time 
frame, with conditions not expected to be widespread enough for 
gale warnings at this time. winds will steadily taper tuesday 
through wednesday as a new area of 30.3 inch high pressure builds
into northern wisconsin.


lmz261-362-364-366-563-565-567-868-180915-
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-
819 pm cdt thu sep 17 2026

sheboygan wi to pentwater mi north...

.rest of tonight...north winds 10 to 15 kt becoming northeast
10 to 20 kt. waves 1 to 3 ft. 
.friday...northeast winds 10 to 20 kt. chance of showers in the
afternoon. waves 2 to 4 ft. 
.friday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. showers likely in the evening, then showers overnight.
waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday...southeast winds 15 to 25 kt becoming east. chance of
showers. waves 4 to 7 ft occasionally to 9 ft. 
.saturday night...east winds 10 to 20 kt becoming northeast.
chance of showers. waves 4 to 6 ft occasionally to 8 ft subsiding
to 2 to 4 ft. 
.sunday...northeast winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally
to 10 ft. 
.sunday night...northeast winds to 30 kt becoming east 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft. 
.monday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 180201
glfls 
expires:202609180800;;631534

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu sep 17 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...

30.4 inch ridging continues to move over lake superior tonight into 
friday as a high presure center moves eastward across southern 
ontario. ridging weakens to 30.1 saturday before restrenghtening 
with the southward motion and strengthening of a high pressure 
center over central ontario sunday, reaching 30.3 inches early 
monday morning. 30.3 inch ridging remains over the area through 
wednesday next week.




lsz162-180800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu sep 17 2026 /901 pm cdt thu sep 17 2026/

.rest of tonight...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight, then veering east late. waves calm
to 2 feet building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots. a slight chance of showers
by mid afternoon. waves 1 to 3 feet. 
.friday night...east winds 10 to 20 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.saturday...east winds 15 to 25 knots backing northeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots increasing to
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.sunday...northeast winds 20 to 30 knots becoming east gales to
35 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 20 to 30 knots diminishing to 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.tuesday...east winds 15 to 25 knots diminishing to 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202609180800;;631535

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu sep 17 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...

30.4 inch ridging continues to move over lake superior tonight into 
friday as a high presure center moves eastward across southern 
ontario. ridging weakens to 30.1 saturday before restrenghtening 
with the southward motion and strengthening of a high pressure 
center over central ontario sunday, reaching 30.3 inches early 
monday morning. 30.3 inch ridging remains over the area through 
wednesday next week.




lsz263-180800-
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-
1001 pm edt thu sep 17 2026

.rest of tonight...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight, then veering east late. waves calm
to 2 feet building to 1 to 3 feet. 
.friday...east winds 5 to 15 knots. waves 1 to 3 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots increasing to
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.sunday...northeast winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202609180800;;631536

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu sep 17 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...

30.4 inch ridging continues to move over lake superior tonight into 
friday as a high presure center moves eastward across southern 
ontario. ridging weakens to 30.1 saturday before restrenghtening 
with the southward motion and strengthening of a high pressure 
center over central ontario sunday, reaching 30.3 inches early 
monday morning. 30.3 inch ridging remains over the area through 
wednesday next week.




lsz264-180800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt thu sep 17 2026

.rest of tonight...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. 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...north winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.sunday night...northeast winds 10 to 20 knots veering east after
midnight. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.monday...east winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202609180800;;631538

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu sep 17 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...

30.4 inch ridging continues to move over lake superior tonight into 
friday as a high presure center moves eastward across southern 
ontario. ridging weakens to 30.1 saturday before restrenghtening 
with the southward motion and strengthening of a high pressure 
center over central ontario sunday, reaching 30.3 inches early 
monday morning. 30.3 inch ridging remains over the area through 
wednesday next week.




lsz266-180800-
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-
1001 pm edt thu sep 17 2026

.rest of tonight...northwest winds 10 to 20 knots veering north
after midnight, then becoming northeast 15 to 25 knots late.
waves calm to 2 feet building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.saturday...southeast winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming north 15 to
25 knots after midnight. waves calm to 2 feet. 
.sunday...northeast winds 20 to 30 knots backing north by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. waves 2 to 4 feet. 
.monday...east winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202609180800;;631537

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu sep 17 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...

30.4 inch ridging continues to move over lake superior tonight into 
friday as a high presure center moves eastward across southern 
ontario. ridging weakens to 30.1 saturday before restrenghtening 
with the southward motion and strengthening of a high pressure 
center over central ontario sunday, reaching 30.3 inches early 
monday morning. 30.3 inch ridging remains over the area through 
wednesday next week.




lsz265-180800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt thu sep 17 2026

.rest of tonight...northwest winds 10 to 20 knots veering
northeast after midnight, then increasing to 15 to 25 knots late.
waves calm to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
late. waves building to 1 to 3 feet. 
.friday night...southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...southeast winds 10 to 20 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming north 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.sunday night...northeast winds 20 to 30 knots becoming east
15 to 25 knots after midnight. waves 2 to 4 feet. 
.monday...east winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202609180800;;631539

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu sep 17 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...

30.4 inch ridging continues to move over lake superior tonight into 
friday as a high presure center moves eastward across southern 
ontario. ridging weakens to 30.1 saturday before restrenghtening 
with the southward motion and strengthening of a high pressure 
center over central ontario sunday, reaching 30.3 inches early 
monday morning. 30.3 inch ridging remains over the area through 
wednesday next week.




lsz267-180800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt thu sep 17 2026

.rest of tonight...northwest winds 10 to 20 knots veering
northeast late. waves calm to 2 feet building to 1 to 3 feet. 
.friday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. waves 2 to 4 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots.
waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$