fzus61 kbuf 280202
glflo 
expires:202608280900;;475114

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu aug 27 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a weak cold front will will cross the lower great lakes 
tonight. a 30.2 inch high will then build from the upper great lakes 
friday to the lower great lakes saturday before drifting off the new 
england coast sunday. a weak frontal boundary is then forecast to 
stall just north of the lake sunday night through tuesday.


loz062-280900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu aug 27 2026

.overnight...northwest winds around 10 knots. waves 1 to
2 feet. 
.friday...north winds 10 knots or less becoming south. waves
2 feet or less. 
.friday night...light and variable winds. waves 1 foot or less. 
.saturday...light and variable winds becoming southwest 5 to
10 knots. waves 1 foot or less. 
.saturday night...south winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. showers likely with a
chance of thunderstorms sunday night. waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming southeast.
showers likely with a chance of thunderstorms 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. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 280202
glflo 
expires:202608280900;;475115

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu aug 27 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a weak cold front will will cross the lower great lakes 
tonight. a 30.2 inch high will then build from the upper great lakes 
friday to the lower great lakes saturday before drifting off the new 
england coast sunday. a weak frontal boundary is then forecast to 
stall just north of the lake sunday night through tuesday.


loz063>065-280900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu aug 27 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 280737
glfle 
expires:202608281415;;489116

open lake forecast for lake erie
national weather service cleveland oh
337 am edt fri aug 28 2026

for waters beyond five nautical miles of shore on lake erie

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...
high pressure of 30.10 inches builds into the great lakes today  
and drifts to the mid-atlantic region through sunday. a warm 
front moves north across lake erie sunday night into monday as low
pressure 29.90 inches moves through the northern great lakes on
tuesday. 


lez164>166-281415-
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-
337 am edt fri aug 28 2026

.today...northeast winds 5 to 15 knots. a chance of waterspouts
early. waves 1 to 2 feet. 
.tonight...east winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms tuesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 280737
glfle 
expires:202608281415;;489117

open lake forecast for lake erie
national weather service cleveland oh
337 am edt fri aug 28 2026

for waters beyond five nautical miles of shore on lake erie

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...
high pressure of 30.10 inches builds into the great lakes today  
and drifts to the mid-atlantic region through sunday. a warm 
front moves north across lake erie sunday night into monday as low
pressure 29.90 inches moves through the northern great lakes on
tuesday. 


lez061-167>169-281415-
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-
337 am edt fri aug 28 2026

.today...north winds 5 to 10 knots becoming northeast. a chance
of waterspouts early. waves 2 feet or less. 
.tonight...east winds less than 10 knots becoming south. waves
1 foot or less. 
.saturday...south winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...southeast winds 10 knots or less becoming
south. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming south. a chance
of showers sunday night. waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots. a chance of showers and
thunderstorms monday night. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms tuesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 280737
glfle 
expires:202608281415;;489115

open lake forecast for lake erie
national weather service cleveland oh
337 am edt fri aug 28 2026

for waters beyond five nautical miles of shore on lake erie

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...
high pressure of 30.10 inches builds into the great lakes today  
and drifts to the mid-atlantic region through sunday. a warm 
front moves north across lake erie sunday night into monday as low
pressure 29.90 inches moves through the northern great lakes on
tuesday. 


lez162-163-281415-
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-
337 am edt fri aug 28 2026

.today...northeast winds 5 to 10 knots becoming east. a chance of
waterspouts early. waves 2 feet or less. 
.tonight...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots. waves around 1 foot. 
.tuesday...southwest winds around 10 knots becoming west. a
chance of showers tuesday night. waves 1 foot or less. 

$$

fzus63 kdtx 280723
glfsc 
expires:202608281530;;488689

lake st clair forecast
national weather service detroit/pontiac mi
323 am edt fri aug 28 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.


lcz460-281530-
lake st clair-
323 am edt fri aug 28 2026

.today...north winds 5 to 10 knots in the morning becoming light and
variable. sunny. waves 2 feet or less.
.tonight...east winds 5 to 10 knots veering to the south after
midnight. mostly clear. waves 2 feet or less.
.saturday...southwest winds 5 to 10 knots becoming south 10 to 15
knots early in the afternoon. mostly sunny. waves 2 feet or less.
.saturday night...south winds 10 to 15 knots becoming southwest 5 to
10 knots after midnight. mostly cloudy early in the evening becoming
partly cloudy. waves 2 feet or less.
.sunday...southwest winds 5 to 10 knots becoming south 10 to 15
knots in the afternoon and evening. partly sunny...then partly
cloudy with a chance of light showers in the evening. waves 2 feet
or less.
.monday...south winds 5 to 10 knots. partly cloudy. a chance of
showers. waves 2 feet or less.
.tuesday...southwest winds 10 to 15 knots. partly cloudy. a chance
of showers. waves 2 feet or less.

$$

fzus63 kdtx 280722
glflh 
expires:202608281530;;488679

open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am edt fri aug 28 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 tomorrow. active pattern returns late 
sunday into monday as a warm front lifts through the area bringing
showers and storms.


lhz361-281530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
322 am edt fri aug 28 2026

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


$$

fzus63 kdtx 280722
glflh 
expires:202608281530;;488680

open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am edt fri aug 28 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 tomorrow. active pattern returns late 
sunday into monday as a warm front lifts through the area bringing
showers and storms.


lhz362-363-281530-
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-
322 am edt fri aug 28 2026

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


$$

fzus63 kdtx 280722
glflh 
expires:202608281530;;488681

open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am edt fri aug 28 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 tomorrow. active pattern returns late 
sunday into monday as a warm front lifts through the area bringing
showers and storms.


lhz462>464-281530-
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-
322 am edt fri aug 28 2026

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


$$

fzus63 kmkx 280149
glflm 
expires:202608280930;;474838

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
849 pm cdt thu aug 27 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure of 30.1 inches will move from ontario into the
northern great lakes by friday morning then shift into the lower
great lakes by friday evening. light northeast to easterly flow is
expected tonight becoming light to modest southerly flow for
friday afternoon and night. modest to breezy southerly winds will
then prevail this weekend and on monday as a trough of low
pressure slowly moves from the great plains to the upper
mississippi river valley. rounds of thunderstorms can be expected
over lake michigan from saturday night into early next week. 



lmz261-362-364-366-563-565-567-868-280930-
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-
849 pm cdt thu aug 27 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northeast winds 10 to 15 kt becoming east 5 to
10 kt. waves 1 to 2 ft. 
.friday...east winds 5 to 10 kt veering to south 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 15 to 25 kt. waves 3 to 5 ft.
.saturday night...south winds 15 to 25 kt. chance of showers
overnight. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...south winds to 30 kt. chance of showers in the morning,
then showers likely with a chance of thunderstorms in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.sunday night...south winds to 30 kt diminishing to 10 to 20 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.monday...south winds 15 to 25 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest. waves 1 to
3 ft.  

$$

fzus63 kmkx 280149
glflm 
expires:202608280930;;474839

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
849 pm cdt thu aug 27 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure of 30.1 inches will move from ontario into the
northern great lakes by friday morning then shift into the lower
great lakes by friday evening. light northeast to easterly flow is
expected tonight becoming light to modest southerly flow for
friday afternoon and night. modest to breezy southerly winds will
then prevail this weekend and on monday as a trough of low
pressure slowly moves from the great plains to the upper
mississippi river valley. rounds of thunderstorms can be expected
over lake michigan from saturday night into early next week. 



lmz080-669-671-673-675-777-779-870-872-874-876-878-280930-
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-
849 pm cdt thu aug 27 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northeast winds 5 to 10 kt becoming east.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt becoming south 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 10 to 20 kt becoming south. waves
3 to 5 ft. 
.saturday night...south winds 15 to 25 kt. chance of showers.
waves 3 to 5 ft. 
.sunday...south winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft. 
.sunday night...south winds to 30 kt diminishing to 10 to 20 kt.
chance of showers and thunderstorms. waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.monday...southwest winds 15 to 25 kt becoming south. chance of
showers. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds 10 to 20 kt becoming south. chance of
showers. waves 2 to 4 ft.  

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489611

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.1 inch high pressure over lake superior this morning increases 
to 30.2 inches later today over the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz162-282000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri aug 28 2026 /300 am cdt fri aug 28 2026/

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

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489612

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.1 inch high pressure over lake superior this morning increases 
to 30.2 inches later today over the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz263-282000-
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 fri aug 28 2026

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

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489613

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.1 inch high pressure over lake superior this morning increases 
to 30.2 inches later today over the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz264-282000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt fri aug 28 2026

.early this morning...northwest winds less than 10 knots. waves
calm to 2 feet. 
.today...northwest winds less than 10 knots backing west in the
afternoon, then becoming south 5 to 15 knots late. waves calm to
2 feet. 
.tonight...south winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming southeast 5 to 15 knots
late. a slight chance of showers by mid afternoon. waves calm to
2 feet. 
.saturday night...south winds 5 to 15 knots backing southeast
after midnight. a slight chance of showers through midnight.
waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. 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 becoming west 5 to
15 knots. a chance of showers. waves building to 2 to 4 feet,
then 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. 

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489614

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.1 inch high pressure over lake superior this morning increases 
to 30.2 inches later today over the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz265-282000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt fri aug 28 2026

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

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489615

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.1 inch high pressure over lake superior this morning increases 
to 30.2 inches later today over the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz266-282000-
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 fri aug 28 2026

.early this morning...northwest winds 5 to 15 knots. areas of
dense fog. waves calm to 2 feet. 
.today...west winds 5 to 15 knots backing east late. patchy dense
fog through early 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. waves
calm to 2 feet. 
.saturday...south winds 5 to 15 knots. a slight chance of showers
and thunderstorms by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. a slight chance of
thunderstorms through midnight. a slight chance of showers. waves
calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots backing east by mid
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 becoming south 10 to
20 knots. a chance of showers. waves building to 2 to 4 feet,
then subsiding to calm to 2 feet. 
.tuesday...west winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489616

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.1 inch high pressure over lake superior this morning increases 
to 30.2 inches later today over the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz267-282000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt fri aug 28 2026

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

$$