fzus61 kbuf 290202
glflo 
expires:202608290900;;528483

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri aug 28 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 30.2 inch high will build across the lower great lakes 
tonight before drifting off the new england coast by sunday. a weak 
frontal boundary is then forecast to stall just north of the lake 
sunday night through tuesday.


loz062-290900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri aug 28 2026

.overnight...southwest winds less than 10 knots. waves
1 foot or less. 
.saturday...southwest winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 
.saturday night...southwest winds 5 to 15 knots. waves 2 feet or
less. 
.sunday...southwest winds 5 to 10 knots. a chance of showers in
the afternoon. waves 1 foot or less. 
.sunday night...southwest winds 10 knots or less becoming east.
showers likely. waves 1 foot or less. 
.monday...east winds 5 to 10 knots becoming southeast. showers
likely during the day, then a chance of showers and thunderstorms
monday night. waves 1 foot or less. 
.tuesday...southeast winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms tuesday night. waves 1 foot
or less. 
.wednesday...southwest winds 5 to 10 knots becoming west. showers
likely during the day, then a chance of showers wednesday night.
waves around 1 foot. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 290202
glflo 
expires:202608290900;;528484

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri aug 28 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 30.2 inch high will build across the lower great lakes 
tonight before drifting off the new england coast by sunday. a weak 
frontal boundary is then forecast to stall just north of the lake 
sunday night through tuesday.


loz063>065-290900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri aug 28 2026

.overnight...west winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots becoming south. waves
2 feet or less. 
.saturday night...south winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.sunday night...west winds 10 knots or less. a chance of showers.
waves 2 feet or less. 
.monday...east winds 10 knots or less becoming southeast. a
chance of showers. waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms tuesday night. waves 2 feet or
less. 
.wednesday...southwest winds 5 to 10 knots becoming west. showers
likely during the day, then a chance of showers wednesday night.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 290738
glfle 
expires:202608291415;;541681

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sat aug 29 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 overhead will build east into the mid-
atlantic through sunday evening with a warm front moving north
over lake erie late sunday night. low pressure 29.80 will move
into the northern great lakes early wednesday with a cold front
passing through early thursday. 


lez061-167>169-291415-
ripley to buffalo ny extending from 5nm 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-
338 am edt sat aug 29 2026

.today...south winds 10 knots or less becoming west. waves 1 foot
or less. 
.tonight...light and variable winds becoming south around
10 knots. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. a chance of showers in
the afternoon. waves 1 to 2 feet. 
.sunday night...south winds 10 knots or less. showers likely.
waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming south. a chance
of showers during the day. waves 2 feet or less. 
.tuesday...southwest winds 5 to 15 knots. a chance of showers
tuesday night. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots becoming west. a
chance of showers. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 290738
glfle 
expires:202608291415;;541679

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sat aug 29 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 overhead will build east into the mid-
atlantic through sunday evening with a warm front moving north
over lake erie late sunday night. low pressure 29.80 will move
into the northern great lakes early wednesday with a cold front
passing through early thursday. 


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-
338 am edt sat aug 29 2026

.today...south winds 10 knots or less becoming southeast. waves
1 foot or less. 
.tonight...southeast winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.sunday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.monday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.tuesday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.wednesday...southwest winds 10 to 15 knots becoming west. a
chance of showers wednesday night. waves 1 foot or less. 

$$

fzus61 kcle 290738
glfle 
expires:202608291415;;541680

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sat aug 29 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 overhead will build east into the mid-
atlantic through sunday evening with a warm front moving north
over lake erie late sunday night. low pressure 29.80 will move
into the northern great lakes early wednesday with a cold front
passing through early thursday. 


lez164>166-291415-
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-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
338 am edt sat aug 29 2026

.today...south winds 10 knots or less becoming northwest. waves
1 foot or less. 
.tonight...east winds 10 knots or less becoming southwest. waves
1 foot or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.sunday night...southwest winds 5 to 10 knots. a chance of
showers overnight. waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming south. waves
2 feet or less. 
.tuesday...southwest winds 5 to 15 knots. waves 1 to 2 feet. 
.wednesday...southwest winds 5 to 10 knots becoming west. a
chance of showers and thunderstorms wednesday night. waves 1 to
2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 290729
glfsc 
expires:202608291530;;541479

lake st clair forecast
national weather service detroit/pontiac mi
329 am edt sat aug 29 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, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lcz460-291530-
lake st clair-
329 am edt sat aug 29 2026

.today...southwest winds 5 to 10 knots becoming south 10 to 15 knots
in the late morning and afternoon. partly sunny. waves 2 feet or
less.
.tonight...south winds 10 to 15 knots becoming southwest 5 to 10
knots after midnight. mostly cloudy. waves 2 feet or less.
.sunday...southwest winds 5 to 10 knots. mostly cloudy. a chance of
light showers until late afternoon. waves 2 feet or less.
.sunday night...southwest winds 5 to 10 knots. partly cloudy early
in the evening becoming mostly cloudy. a chance of light showers
early in the evening. showers likely by midnight...then a chance of
light showers after midnight. waves 2 feet or less.
.monday...south winds 5 to 10 knots. partly sunny becoming mostly
cloudy. waves 2 feet or less.
.tuesday...southwest winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.wednesday...west winds 5 to 10 knots. partly cloudy. a chance of
showers. waves 2 feet or less.

$$

fzus63 kdtx 290728
glflh 
expires:202608291530;;541476

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt sat aug 29 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, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz462>464-291530-
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-
328 am edt sat aug 29 2026

.today...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots becoming southwest 5 to
10 knots after midnight. a chance of showers after midnight.
waves 1 to 3 feet. 
.sunday...south winds 5 to 10 knots. a chance of showers in the
morning...then showers likely in the afternoon. waves 2 feet or
less. 
.sunday night...south winds 5 to 10 knots backing to the
southeast after midnight. showers in the evening...then a chance
of showers after midnight. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots veering to the south late
in the evening. a chance of showers. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. a chance of showers early
in the morning...then a chance of showers and thunderstorms .
waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots veering to the north
by midnight. a chance of showers and thunderstorms early in the
morning...then a chance of showers. waves 2 feet or less. 


$$

fzus63 kdtx 290728
glflh 
expires:202608291530;;541474

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt sat aug 29 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, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz361-291530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
328 am edt sat aug 29 2026

.today...southwest winds 5 to 10 knots. waves 2 feet or less. 
.tonight...southwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.sunday...south winds 5 to 10 knots backing to the east in the
late morning and early afternoon...then becoming light and
variable early in the afternoon. a chance of showers. waves
2 feet or less. 
.sunday night...light and variable winds becoming east 5 to
10 knots in the late evening and overnight. a chance of showers
in the evening. waves 2 feet or less. 
.monday...east winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening. a chance of showers in the morning...then
showers likely late in the morning. a chance of showers late in
the evening. waves 1 to 3 feet. 
.tuesday...southeast winds 5 to 10 knots early in the morning
becoming light and variable...then becoming southeast 5 to
10 knots by midnight. a chance of showers and thunderstorms.
waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots veering to the northwest by
midnight. a chance of showers early in the morning. waves 2 feet
or less. 


$$

fzus63 kdtx 290728
glflh 
expires:202608291530;;541475

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt sat aug 29 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, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz362-363-291530-
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-
328 am edt sat aug 29 2026

.today...southwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then becoming south 10 to 15 knots
in the afternoon. waves 2 to 4 feet. 
.tonight...south winds 5 to 10 knots veering to the southwest
after midnight. a chance of showers after midnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.sunday...south winds 5 to 10 knots. a chance of showers. waves
2 feet or less. 
.sunday night...east winds 5 to 10 knots. showers likely in the
evening...then a chance of showers after midnight. waves 2 feet
or less. 
.monday...southeast winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. a chance of showers. a
chance of thunderstorms . waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots backing to the south
early in the evening...then backing to the south 5 to 10 knots by
midnight. a chance of thunderstorms early in the morning. a
chance of showers. waves 2 feet or less. 


$$

fzus63 kmkx 290744
glflm 
expires:202608291515;;541924

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
244 am cdt sat aug 29 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...

high pressure around 30.2 inches will gradually move east of the
lower great lakes today, while low pressure deepens to around 
29.6 inches in the central great plains. this will support modest 
to breezy southerly winds from this afternoon through monday as 
the low will remain well to the west. scattered thunderstorms will
occur at times from tonight into next week. a weak cold front 
will finally arrive late tuesday night and wednesday with light 
northerly winds eventually taking hold.


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-
244 am cdt sat aug 29 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 10 to 20 kt increasing to 30 kt. chance
of showers this afternoon. waves 2 to 4 ft. 
.tonight...south winds to 30 kt diminishing to 15 to 25 kt.
chance of showers in the evening, then chance of showers and
slight chance of thunderstorms overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...south winds 15 to 25 kt. chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.sunday night...east winds 10 to 20 kt becoming southeast. chance
of showers in the evening. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.monday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers in the afternoon. waves 3 to 5 ft. 
.monday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers. waves 3 to 5 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.wednesday...northwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 290744
glflm 
expires:202608291515;;541925

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
244 am cdt sat aug 29 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...

high pressure around 30.2 inches will gradually move east of the
lower great lakes today, while low pressure deepens to around 
29.6 inches in the central great plains. this will support modest 
to breezy southerly winds from this afternoon through monday as 
the low will remain well to the west. scattered thunderstorms will
occur at times from tonight into next week. a weak cold front 
will finally arrive late tuesday night and wednesday with light 
northerly winds eventually taking hold.


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-
244 am cdt sat aug 29 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers this afternoon. waves 2 to 4 ft. 
.tonight...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers in the evening, then chance of showers and
slight chance of thunderstorms overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...south winds 15 to 25 kt. chance of showers. waves 4 to
7 ft occasionally to 9 ft. 
.sunday night...south winds 10 to 20 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.monday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.monday night...south winds 10 to 20 kt becoming southwest. waves
3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt becoming south 10 to
15 kt. chance of showers and thunderstorms. waves 2 to 4 ft.
.wednesday...southwest winds 10 to 15 kt becoming south. waves
1 to 2 ft.  

$$

fzus63 kmqt 290801
glfls 
expires:202608292000;;542179

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 29 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...

30.0 inch ridging over lake superior today breaks down by this 
afternoon as the parent high moves offshore. a 29.6 inch low 
develops over the central and northern plains tonight before lifting 
north into the canadian prairies early next week. the new 29.4 inch 
low over the canadian prairies on monday is projected to bring 29.8 
inch troughing over lake superior by late monday. weak high pressure 
ridging of 29.9 inches looks to make a quick return on tuesday 
before being replaced by weak 29.8 inch troughing tuesday night and 
wednesday morning. 




lsz162-292000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat aug 29 2026 /300 am cdt sat aug 29 2026/

.early this morning...east winds 5 to 15 knots. a slight chance
of showers and thunderstorms. waves calm to 2 feet. 
.today...east winds 5 to 15 knots. a slight chance of
thunderstorms through early afternoon. a chance of showers. waves
calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight. a slight chance of showers through midnight. patchy
fog. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots increasing to 20 to
30 knots. areas of dense fog through early afternoon. a slight
chance of showers. waves building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. a slight chance of showers through midnight, then
showers likely and a slight chance of thunderstorms after
midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. a chance of showers through early
afternoon. waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing northeast.
waves calm to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202608292000;;542180

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 29 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...

30.0 inch ridging over lake superior today breaks down by this 
afternoon as the parent high moves offshore. a 29.6 inch low 
develops over the central and northern plains tonight before lifting 
north into the canadian prairies early next week. the new 29.4 inch 
low over the canadian prairies on monday is projected to bring 29.8 
inch troughing over lake superior by late monday. weak high pressure 
ridging of 29.9 inches looks to make a quick return on tuesday 
before being replaced by weak 29.8 inch troughing tuesday night and 
wednesday morning. 




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-
400 am edt sat aug 29 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots. a slight chance of
thunderstorms through early afternoon. a chance of showers. waves
calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south after
midnight, then backing east late. a slight chance of showers
through midnight. patchy fog. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 15 to
25 knots in the afternoon. patchy dense fog through early
afternoon. a slight chance of showers by mid afternoon. waves
building to 1 to 3 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers through
midnight, then showers likely and a slight chance of
thunderstorms after midnight. waves 1 to 3 feet. 
.monday...southeast winds 10 to 20 knots backing east by mid
afternoon. showers likely through early afternoon. waves building
to 2 to 4 feet. 
.monday night...northeast winds 5 to 15 knots veering southwest
after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.wednesday...west winds 5 to 15 knots veering north. waves calm
to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202608292000;;542181

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 29 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...

30.0 inch ridging over lake superior today breaks down by this 
afternoon as the parent high moves offshore. a 29.6 inch low 
develops over the central and northern plains tonight before lifting 
north into the canadian prairies early next week. the new 29.4 inch 
low over the canadian prairies on monday is projected to bring 29.8 
inch troughing over lake superior by late monday. weak high pressure 
ridging of 29.9 inches looks to make a quick return on tuesday 
before being replaced by weak 29.8 inch troughing tuesday night and 
wednesday morning. 




lsz264-292000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sat aug 29 2026

.early this morning...southwest winds less than 10 knots. waves
calm to 2 feet. 
.today...south winds 5 to 15 knots backing southeast in the
afternoon, then veering south late. a slight chance of showers by
mid afternoon. waves calm to 2 feet. 
.tonight...south winds less than 10 knots backing southeast late.
patchy dense fog. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. areas of dense fog through
early afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of showers. waves building to
1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. showers likely through
early afternoon. a chance of showers by mid afternoon. waves
building to 2 to 4 feet. 
.monday night...south winds 5 to 15 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots veering west. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202608292000;;542182

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 29 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...

30.0 inch ridging over lake superior today breaks down by this 
afternoon as the parent high moves offshore. a 29.6 inch low 
develops over the central and northern plains tonight before lifting 
north into the canadian prairies early next week. the new 29.4 inch 
low over the canadian prairies on monday is projected to bring 29.8 
inch troughing over lake superior by late monday. weak high pressure 
ridging of 29.9 inches looks to make a quick return on tuesday 
before being replaced by weak 29.8 inch troughing tuesday night and 
wednesday morning. 




lsz265-292000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sat aug 29 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon. a chance of showers. a slight chance
of thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing southeast late. a slight
chance of showers through midnight. patchy fog. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
patchy fog through early afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight. a chance of showers. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. showers likely through
early afternoon. a chance of showers by mid afternoon. waves
building to 2 to 4 feet. 
.monday night...south winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.tuesday...south winds 10 to 20 knots veering west. waves calm to
2 feet. 
.wednesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202608292000;;542184

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 29 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...

30.0 inch ridging over lake superior today breaks down by this 
afternoon as the parent high moves offshore. a 29.6 inch low 
develops over the central and northern plains tonight before lifting 
north into the canadian prairies early next week. the new 29.4 inch 
low over the canadian prairies on monday is projected to bring 29.8 
inch troughing over lake superior by late monday. weak high pressure 
ridging of 29.9 inches looks to make a quick return on tuesday 
before being replaced by weak 29.8 inch troughing tuesday night and 
wednesday morning. 




lsz267-292000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sat aug 29 2026

.early this morning...south winds 5 to 15 knots. patchy dense
fog. waves calm to 2 feet. 
.today...southeast winds 5 to 15 knots. patchy fog. a slight
chance of showers and thunderstorms by mid afternoon. waves calm
to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then diminishing to 5 to 15 knots late. a chance
of showers and a slight chance of thunderstorms through midnight.
patchy fog. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. areas of dense fog through
early afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 15 to 25 knots. a chance of showers
through early afternoon, then showers likely by mid afternoon.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. a chance of showers. waves subsiding to calm to
2 feet. 
.tuesday...south winds 5 to 15 knots veering west. waves calm to
2 feet. 
.wednesday...west winds 10 to 20 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 290801
glfls 
expires:202608292000;;542183

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 29 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...

30.0 inch ridging over lake superior today breaks down by this 
afternoon as the parent high moves offshore. a 29.6 inch low 
develops over the central and northern plains tonight before lifting 
north into the canadian prairies early next week. the new 29.4 inch 
low over the canadian prairies on monday is projected to bring 29.8 
inch troughing over lake superior by late monday. weak high pressure 
ridging of 29.9 inches looks to make a quick return on tuesday 
before being replaced by weak 29.8 inch troughing tuesday night and 
wednesday morning. 




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-
400 am edt sat aug 29 2026

.early this morning...south winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...south winds 5 to 15 knots backing southeast in the
afternoon. patchy fog. a chance of showers and a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots. a slight chance of showers
and thunderstorms through midnight. patchy fog. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. areas of dense fog through early afternoon.
waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots. a slight chance of
showers. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. showers likely. waves
building to 2 to 4 feet. 
.monday night...south winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering west. waves calm to
2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$