fzus61 kbuf 290802
glflo 
expires:202508291500;;524419

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri aug 29 2025

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 29.9 inch elongated low over southern quebec, has 
placed a cold front across the southeastern side of the lake this 
morning. a 30.2 inch high over the upper great lakes will then 
settle across the lake later today and into the weekend, before 
drifting just east of the lake on monday.


loz062-291500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt fri aug 29 2025

.today...north winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 10 knots becoming west. waves
1 to 2 feet. 
.saturday night...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...northwest winds less than 10 knots. waves 1 foot or
less. 
.monday...southeast winds 10 knots or less. waves 1 foot or less.
.tuesday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus61 kbuf 290802
glflo 
expires:202508291500;;524421

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri aug 29 2025

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 29.9 inch elongated low over southern quebec, has 
placed a cold front across the southeastern side of the lake this 
morning. a 30.2 inch high over the upper great lakes will then 
settle across the lake later today and into the weekend, before 
drifting just east of the lake on monday.


loz064-065-291500-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am edt fri aug 29 2025

.today...northwest winds 10 to 15 knots becoming west. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest.
waves 2 feet or less. 
.sunday...northwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.monday...southeast winds less than 10 knots. waves 1 foot or
less. 
.tuesday...south winds 10 knots or less. waves 1 foot or less. 

$$

fzus61 kbuf 290802
glflo 
expires:202508291500;;524420

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri aug 29 2025

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 29.9 inch elongated low over southern quebec, has 
placed a cold front across the southeastern side of the lake this 
morning. a 30.2 inch high over the upper great lakes will then 
settle across the lake later today and into the weekend, before 
drifting just east of the lake on monday.


loz063-291500-
lake ontario open waters from hamlin beach to sodus bay-
402 am edt fri aug 29 2025

.today...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.tonight...northwest winds 10 to 15 knots. waves 2 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
around 2 feet. 
.saturday night...northwest winds 5 to 10 knots. waves 1 to
2 feet. 
.sunday...northwest winds 10 knots or less becoming south. waves
1 foot or less. 
.monday...southeast winds less than 10 knots. waves 1 foot or
less. 
.tuesday...south winds 10 knots or less. waves 1 foot or less. 

$$

fzus61 kcle 290752
glfle 
expires:202508291415;;523864

open lake forecast for lake erie
national weather service cleveland oh
352 am edt fri aug 29 2025

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...
a cold front exits to the east this morning as high pressure 30.20
inches builds into the region today and will persist through the
weekend into early next week. 


lez162-163-291415-
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-
352 am edt fri aug 29 2025

.today...north winds 5 to 10 knots. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday night...southeast winds 10 knots or less becoming
south. waves 1 foot or less. 
.sunday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...east winds 5 to 10 knots. waves 1 foot or less. 
.tuesday...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 

$$

fzus61 kcle 290752
glfle 
expires:202508291415;;523865

open lake forecast for lake erie
national weather service cleveland oh
352 am edt fri aug 29 2025

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...
a cold front exits to the east this morning as high pressure 30.20
inches builds into the region today and will persist through the
weekend into early next week. 


lez164-165-291415-
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-
352 am edt fri aug 29 2025

.today...north winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...north winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.saturday night...east winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.sunday...east winds 10 knots or less. waves 1 foot or less. 
.monday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus61 kcle 290752
glfle 
expires:202508291415;;523866

open lake forecast for lake erie
national weather service cleveland oh
352 am edt fri aug 29 2025

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...
a cold front exits to the east this morning as high pressure 30.20
inches builds into the region today and will persist through the
weekend into early next week. 


lez061-166>169-291415-
ripley to buffalo ny extending from 5nm 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-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-
352 am edt fri aug 29 2025

.today...north winds 5 to 15 knots becoming northwest. a chance
of waterspouts late. waves 1 to 3 feet. 
.tonight...northwest winds 5 to 10 knots becoming north. a chance
of waterspouts early. waves 2 feet or less. 
.saturday...north winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.saturday night...northwest winds 10 knots or less becoming east.
waves 1 foot or less. 
.sunday...east winds 10 knots or less. waves 1 foot or less. 
.monday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus63 kdtx 290740
glfsc 
expires:202508291545;;523499

lake st clair forecast
national weather service detroit/pontiac mi
340 am edt fri aug 29 2025

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, 30.10 inches, will fill in through the
day, settling over the great lakes by this evening. high pressure
will then hold through the weekend, promoting more tranquil
conditions.


lcz460-291545-
lake st clair-
340 am edt fri aug 29 2025

.today...north winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and afternoon. mostly sunny. waves 2 feet or less.
.tonight...northeast winds 5 to 10 knots until early morning
becoming light and variable. mostly clear. waves 2 feet or less.
.saturday...light and variable winds. sunny. waves 2 feet or less.
.saturday night...southeast winds 5 to 10 knots until early morning
becoming light and variable. mostly clear. waves nearly calm.
.sunday...light and variable winds becoming east 5 to 10 knots in
the evening. clear. waves nearly calm.
.monday...east winds 5 to 10 knots. clear. waves 2 feet or less.
.tuesday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 290740
glflh 
expires:202508291545;;523495

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt fri aug 29 2025

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, 30.10 inches, will fill in through the
day, settling over the great lakes by this evening. high pressure
will then hold through the weekend, promoting more tranquil
conditions.


lhz361-291545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 am edt fri aug 29 2025

.today...north winds 5 to 10 knots backing to the west late in
the afternoon. waves 2 feet or less. 
.tonight...northwest winds 5 to 10 knots. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...west winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.sunday...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots until early morning. waves 2 feet or less. 


$$

fzus63 kdtx 290740
glflh 
expires:202508291545;;523496

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt fri aug 29 2025

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, 30.10 inches, will fill in through the
day, settling over the great lakes by this evening. high pressure
will then hold through the weekend, promoting more tranquil
conditions.


lhz362-363-291545-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
340 am edt fri aug 29 2025

.today...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the afternoon. waves 2 to 4 feet. 
.tonight...north winds 5 to 10 knots backing to the northwest
after midnight. waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots until late afternoon
becoming light and variable. waves 2 feet or less. 
.saturday night...light and variable winds becoming south 5 to
10 knots after midnight. waves 2 feet or less. 
.sunday...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots in
the late evening and early morning. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 290740
glflh 
expires:202508291545;;523497

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt fri aug 29 2025

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, 30.10 inches, will fill in through the
day, settling over the great lakes by this evening. high pressure
will then hold through the weekend, promoting more tranquil
conditions.


lhz462>464-291545-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
340 am edt fri aug 29 2025

.today...north winds 10 to 15 knots. sprinkles. waves 3 to
5 feet. 
.tonight...north winds 10 to 15 knots decreasing to 5 to 10 knots
in the late evening and overnight. sprinkles in the evening.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.saturday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...light and variable winds. waves 2 feet or less.
.sunday...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots in
the late evening and early morning. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 290727
glflm 
expires:202508291515;;523242

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
227 am cdt fri aug 29 2025

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... 

30.2 inch high pressure is centered over lake superior early this
morning, resulting in east-northeast winds across the open waters
of lake michigan. the high will settle over the lake michigan 
vicinity late this morning, resulting in decreasing northeasterly
wind speeds. winds will become light and variable tonight through
saturday as the area of high pressure drifts into lower michigan.
the high will gradually break down sunday into early next week, 
though light and variable winds will persist in the absence of any
organized areas of low pressure over the western great lakes and 
northern great plains. prevailing south to southwest winds will 
become established tuesday and tuesday night as 29.9 inch low 
pressure approaches lake michigan from ontario. said low is 
forecast to drag a strong cold front across the waters at some 
point wednesday through wednesday night, bringing a gusty 
northwest wind shift to all of lake michigan. gusty northwest 
winds will continue through most of thursday. while the current 
forecast keeps gusts below gale force next wednesday-thursday 
across the open waters, the potential for increasing trends will 
be monitored as this portion of the period draws closer. showers 
and thunderstorms will accompany the passing cold front wednesday 
into thursday, with details regarding possible strong thunderstorm
wind gusts or waterspouts unclear at this time. will continue to 
monitor trends over the coming forecasts.


lmz080-669-671-673-675-777-779-870-872-874-876-878-291515-
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-
227 am cdt fri aug 29 2025

sheboygan wi to pentwater mi south...

.today...northeast winds 10 to 15 kt becoming north. waves 3 to
5 ft subsiding to 1 to 3 ft. 
.tonight...north winds 10 to 15 kt becoming east. waves 1 to
2 ft. 
.saturday...east winds 5 to 10 kt becoming northeast. waves 1 ft
or less. 
.saturday night...northeast winds 5 to 10 kt becoming east. waves
nearly calm. 
.sunday...east winds 5 to 10 kt becoming northeast. waves nearly
calm. 
.sunday night...northeast winds 5 to 10 kt becoming east. waves
1 ft or less. 
.monday...east winds 5 to 10 kt becoming northeast. waves nearly
calm. 
.tuesday...southeast winds 5 to 10 kt becoming south 10 to 15 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 290727
glflm 
expires:202508291515;;523241

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
227 am cdt fri aug 29 2025

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... 

30.2 inch high pressure is centered over lake superior early this
morning, resulting in east-northeast winds across the open waters
of lake michigan. the high will settle over the lake michigan 
vicinity late this morning, resulting in decreasing northeasterly
wind speeds. winds will become light and variable tonight through
saturday as the area of high pressure drifts into lower michigan.
the high will gradually break down sunday into early next week, 
though light and variable winds will persist in the absence of any
organized areas of low pressure over the western great lakes and 
northern great plains. prevailing south to southwest winds will 
become established tuesday and tuesday night as 29.9 inch low 
pressure approaches lake michigan from ontario. said low is 
forecast to drag a strong cold front across the waters at some 
point wednesday through wednesday night, bringing a gusty 
northwest wind shift to all of lake michigan. gusty northwest 
winds will continue through most of thursday. while the current 
forecast keeps gusts below gale force next wednesday-thursday 
across the open waters, the potential for increasing trends will 
be monitored as this portion of the period draws closer. showers 
and thunderstorms will accompany the passing cold front wednesday 
into thursday, with details regarding possible strong thunderstorm
wind gusts or waterspouts unclear at this time. will continue to 
monitor trends over the coming forecasts.


lmz261-362-364-366-563-565-567-868-291515-
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-
227 am cdt fri aug 29 2025

sheboygan wi to pentwater mi north...

.today...northeast winds 5 to 10 kt becoming north 10 to 15 kt.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tonight...north winds 10 to 15 kt backing to southwest. waves
1 ft or less. 
.saturday...southwest winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less. 
.saturday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 ft or less. 
.sunday...southwest winds 5 to 10 kt increasing to 10 to 15 kt.
waves nearly calm. 
.sunday night...southwest winds 5 to 10 kt becoming south. waves
nearly calm. 
.monday...southwest winds 5 to 10 kt increasing to 10 to 15 kt.
waves nearly calm. 
.tuesday...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 290801
glfls 
expires:202508292000;;524272

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 29 2025

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 30.2 inch high over lake superior this morning continues over the 
rest of the great lakes region through the weekend before merging 
with a high of 30.2 inches over the northeast us by monday. behind 
this, a 29.8 inch trough looks to move over lake superior late 
tuesday/tuesday night; expect remnant troughing of at least 29.9 
inches to remain over the lake through the middle of next week.



lsz162-292000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri aug 29 2025 /301 am cdt fri aug 29 2025/

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 5 to 15 knots backing east late. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering west after midnight.
waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming north 15 to
25 knots. a chance of showers. a chance of thunderstorms. showers
likely. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202508292000;;524273

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 29 2025

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 30.2 inch high over lake superior this morning continues over the 
rest of the great lakes region through the weekend before merging 
with a high of 30.2 inches over the northeast us by monday. behind 
this, a 29.8 inch trough looks to move over lake superior late 
tuesday/tuesday night; expect remnant troughing of at least 29.9 
inches to remain over the lake through the middle of next week.



lsz263-292000-
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 fri aug 29 2025

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds less than 10 knots veering southwest
after midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming north 15 to
25 knots. a chance of showers. showers likely. waves building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202508292000;;524274

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 29 2025

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 30.2 inch high over lake superior this morning continues over the 
rest of the great lakes region through the weekend before merging 
with a high of 30.2 inches over the northeast us by monday. behind 
this, a 29.8 inch trough looks to move over lake superior late 
tuesday/tuesday night; expect remnant troughing of at least 29.9 
inches to remain over the lake through the middle of next week.



lsz264-292000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri aug 29 2025

.early this morning...south winds less than 10 knots. waves calm
to 2 feet. 
.today...southwest winds 5 to 15 knots backing south in the
afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest late.
waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds less than 10 knots. waves calm to
2 feet. 
.monday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming north 15 to
25 knots. a chance of showers, then showers likely. waves
building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202508292000;;524275

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 29 2025

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 30.2 inch high over lake superior this morning continues over the 
rest of the great lakes region through the weekend before merging 
with a high of 30.2 inches over the northeast us by monday. behind 
this, a 29.8 inch trough looks to move over lake superior late 
tuesday/tuesday night; expect remnant troughing of at least 29.9 
inches to remain over the lake through the middle of next week.



lsz265-292000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri aug 29 2025

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots backing southeast in the
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south after
midnight, then veering west late. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing south late. waves
calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots veering south. waves calm
to 2 feet. 
.tuesday...southwest winds 10 to 20 knots veering west. a chance
of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202508292000;;524276

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 29 2025

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 30.2 inch high over lake superior this morning continues over the 
rest of the great lakes region through the weekend before merging 
with a high of 30.2 inches over the northeast us by monday. behind 
this, a 29.8 inch trough looks to move over lake superior late 
tuesday/tuesday night; expect remnant troughing of at least 29.9 
inches to remain over the lake through the middle of next week.



lsz266-292000-
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 fri aug 29 2025

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest late.
waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202508292000;;524277

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 29 2025

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 30.2 inch high over lake superior this morning continues over the 
rest of the great lakes region through the weekend before merging 
with a high of 30.2 inches over the northeast us by monday. behind 
this, a 29.8 inch trough looks to move over lake superior late 
tuesday/tuesday night; expect remnant troughing of at least 29.9 
inches to remain over the lake through the middle of next week.



lsz267-292000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri aug 29 2025

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...north winds 5 to 15 knots backing northwest in the
afternoon, then veering north late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots veering west late.
waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots veering south. waves calm
to 2 feet. 
.tuesday...south winds 10 to 20 knots. a chance of showers. waves
building to 1 to 3 feet. 

$$