fzus61 kbuf 120202
glflo 
expires:202607120900;;821772

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat jul 11 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 large 30.2 inch high will build south across the lower 
great lakes through this weekend, before sliding east into new 
england monday, then off the coast by tuesday. this will allow a 
warm front to sweep northeastward across the lake tuesday, followed 
by a cold front pushing south across the lake on wednesday. the 
frontal boundary will then remain south of the lake thursday.


loz063>065-120900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat jul 11 2026

.overnight...northeast winds 10 knots or less. waves 2 feet
or less. 
.sunday...east winds 10 knots or less becoming north. waves
1 foot or less. 
.sunday night...north winds less than 10 knots. waves 1 foot or
less. 
.monday...southwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.monday night...southwest winds 5 to 15 knots. waves 1 to 3 feet.
.tuesday...southwest winds 15 to 25 knots becoming west. waves
3 to 6 feet building to 4 to 7 feet. waves occasionally around
9 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 

$$

fzus61 kbuf 120202
glflo 
expires:202607120900;;821771

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat jul 11 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 large 30.2 inch high will build south across the lower 
great lakes through this weekend, before sliding east into new 
england monday, then off the coast by tuesday. this will allow a 
warm front to sweep northeastward across the lake tuesday, followed 
by a cold front pushing south across the lake on wednesday. the 
frontal boundary will then remain south of the lake thursday.


loz062-120900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat jul 11 2026

.overnight...light and variable winds. waves 1 foot or
less. 
.sunday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.sunday night...southeast winds less than 10 knots. waves 1 foot
or less. 
.monday...light and variable winds becoming southwest 5 to
10 knots. waves 1 foot or less. 
.monday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.tuesday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 6 feet. 
.wednesday...west winds 5 to 15 knots becoming northwest. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...west winds 10 knots or less becoming northwest. waves
2 feet or less. 

$$

fzus61 kcle 120128
glfle 
expires:202607120815;;821000

open lake forecast for lake erie
national weather service cleveland oh
928 pm edt sat jul 11 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure of 30.20 inches will build over the central and easter
great lakes on sunday then settle south to the ohio valley. high pressure
will persist through tuesday.


lez165>168-120815-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
928 pm edt sat jul 11 2026

.overnight...northeast winds 10 to 15 knots becoming east.
waves 1 to 3 feet. 
.sunday...east winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 20 knots becoming east 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...east winds less than 10 knots becoming north. waves
1 foot or less. 
.monday night...east winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.tuesday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.wednesday...west winds 5 to 15 knots becoming north. waves 1 to
3 feet. 
.thursday...northwest winds 5 to 10 knots becoming west. waves
1 to 2 feet. 

$$

fzus61 kcle 120128
glfle 
expires:202607120815;;821001

open lake forecast for lake erie
national weather service cleveland oh
928 pm edt sat jul 11 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure of 30.20 inches will build over the central and easter
great lakes on sunday then settle south to the ohio valley. high pressure
will persist through tuesday.


lez061-169-120815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
928 pm edt sat jul 11 2026

.overnight...northeast winds 10 to 15 knots becoming east. waves 
2 feet or less. 
.sunday...east winds 10 to 15 knots becoming northeast. waves
2 feet or less. 
.sunday night...northeast winds 10 knots or less becoming
southeast. waves 2 feet or less. 
.monday...south winds less than 10 knots becoming west. waves
1 foot or less. 
.monday night...southwest winds 10 knots or less. waves 1 foot or
less. 
.tuesday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet building to 2 to 4 feet. 
.wednesday...west winds 5 to 10 knots becoming northwest. waves
1 to 3 feet. 
.thursday...west winds 5 to 10 knots becoming northwest. waves
1 to 2 feet. 

$$

fzus61 kcle 120128
glfle 
expires:202607120815;;820999

open lake forecast for lake erie
national weather service cleveland oh
928 pm edt sat jul 11 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure of 30.20 inches will build over the central and easter
great lakes on sunday then settle south to the ohio valley. high pressure
will persist through tuesday.


lez162>164-120815-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
928 pm edt sat jul 11 2026

.overnight...northeast winds 10 to 15 knots. waves
2 feet or less. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.sunday night...east winds 5 to 15 knots becoming northeast.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...northeast winds less than 10 knots becoming east. waves
1 foot or less. 
.monday night...southeast winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.tuesday...southwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.wednesday...west winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.thursday...northwest winds 5 to 10 knots becoming west. waves
1 foot or less. 

$$

fzus63 kdtx 120650
glfsc 
expires:202607121500;;833214

lake st clair forecast
national weather service detroit/pontiac mi
250 am edt sun jul 12 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...broad area of high pressure will continue to influence
the quiet weather over the great lakes region through the
weekend. the high pressure system will strengthen slightly to
30.20 inches sunday, bringing benign marine conditions.


lcz460-121500-
lake st clair-
250 am edt sun jul 12 2026

.today...east winds 5 to 10 knots. sunny. waves 2 feet or less.
.tonight...east winds 5 to 10 knots this evening becoming light and
variable. clear. waves 2 feet or less.
.monday...light and variable winds becoming south 5 to 10 knots in
the late morning and afternoon. sunny. waves 2 feet or less.
.monday night...south winds 5 to 10 knots. clear. waves 2 feet or
less.
.tuesday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the afternoon and evening. clear. waves 2 feet or less.
.wednesday...northeast winds 10 to 15 knots. clear. waves 2 feet or
less.
.thursday...northeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 120649
glflh 
expires:202607121500;;833205

open lake forecast for lake huron
national weather service detroit/pontiac mi
249 am edt sun jul 12 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...broad area of high pressure will continue to influence
the quiet weather over the great lakes region through the
weekend. the high pressure system will strengthen slightly to
30.20 inches sunday, bringing benign marine conditions.


lhz462>464-121500-
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-
249 am edt sun jul 12 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds becoming south 5 to 10 knots
after midnight. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots backing to the south
early in the afternoon. waves 2 feet or less. 
.monday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet. 
.tuesday...southwest winds 10 to 15 knots veering to the west
late in the evening. waves 1 to 3 feet building to 2 to 4 feet
late in the morning...then subsiding to 1 to 3 feet late in the
evening. 
.wednesday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 120649
glflh 
expires:202607121500;;833203

open lake forecast for lake huron
national weather service detroit/pontiac mi
249 am edt sun jul 12 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...broad area of high pressure will continue to influence
the quiet weather over the great lakes region through the
weekend. the high pressure system will strengthen slightly to
30.20 inches sunday, bringing benign marine conditions.


lhz361-121500-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
249 am edt sun jul 12 2026

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


$$

fzus63 kdtx 120649
glflh 
expires:202607121500;;833204

open lake forecast for lake huron
national weather service detroit/pontiac mi
249 am edt sun jul 12 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...broad area of high pressure will continue to influence
the quiet weather over the great lakes region through the
weekend. the high pressure system will strengthen slightly to
30.20 inches sunday, bringing benign marine conditions.


lhz362-363-121500-
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-
249 am edt sun jul 12 2026

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


$$

fzus63 kmkx 120159
glflm 
expires:202607120915;;821645

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt sat jul 11 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 30.2 inches over the great lakes region will
maintain an axis roughly from northern iowa to southern lower 
michigan through monday and then sink into illinois and indiana 
tuesday and wednesday while weakening to 30.1 inches. low pressure
around 29.6 inches will approach from the northern plains thursday
into friday. look for winds over lake michigan to become 
southerly across the north half sunday and light and variable in 
the south. winds will become south-southwesterly monday and
increase a bit by tuesday. a weak cold front will bring a wind
shift to the north-northeast wednesday into thursday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-120915-
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-
859 pm cdt sat jul 11 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 20 kt becoming east 10 to
15 kt. waves 1 to 3 ft. 
.sunday...east winds 5 to 10 kt backing to northwest. waves 1 to
2 ft. 
.sunday night...west winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.monday...southwest winds 10 to 15 kt. waves 1 to 2 ft. 
.monday night...southwest winds 10 to 15 kt. waves 1 to 2 ft. 
.tuesday...west winds 10 to 15 kt becoming southwest 10 to 20 kt.
waves 1 to 2 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 1 to 3 ft. 
.wednesday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.thursday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 120159
glflm 
expires:202607120915;;821644

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt sat jul 11 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 30.2 inches over the great lakes region will
maintain an axis roughly from northern iowa to southern lower 
michigan through monday and then sink into illinois and indiana 
tuesday and wednesday while weakening to 30.1 inches. low pressure
around 29.6 inches will approach from the northern plains thursday
into friday. look for winds over lake michigan to become 
southerly across the north half sunday and light and variable in 
the south. winds will become south-southwesterly monday and
increase a bit by tuesday. a weak cold front will bring a wind
shift to the north-northeast wednesday into thursday.


lmz261-362-364-366-563-565-567-868-120915-
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-
859 pm cdt sat jul 11 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northeast winds 5 to 10 kt veering to south.
waves 1 to 2 ft. 
.sunday...south winds 10 to 15 kt becoming southwest 10 to 20 kt.
waves 2 to 4 ft. 
.sunday night...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.monday night...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday...west winds 15 to 25 kt becoming southwest to 30 kt.
waves 2 to 4 ft. 
.tuesday night...west winds 15 to 25 kt becoming northwest 10 to
15 kt. waves 2 to 4 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.thursday...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 120201
glfls 
expires:202607120800;;821708

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
builds to 30.1 inches over the lake by sunday morning. this surface 
high then shifts south toward the lower great lakes as pressure 
falls over the lake to 29.9 inches by sunday night. early next week 
a strong low of around 29.3 inches tracks northeast from the 
northern plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under weak high 
pressure wednesday into thursday at 30.0 inches.




lsz266-120800-
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-
1000 pm edt sat jul 11 2026

.rest of tonight...south winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.sunday...southwest winds 10 to 20 knots backing south in the
afternoon, then diminishing to 5 to 15 knots late. a slight
chance of showers and thunderstorms. waves subsiding to calm to
2 feet. 
.sunday night...south winds 10 to 20 knots veering southwest
after midnight. waves building to 2 to 4 feet. 
.monday...west winds 10 to 20 knots becoming south 15 to 25 knots
by mid afternoon. waves building to 3 to 5 feet occasionally to
7 feet. 
.monday night...southwest winds 20 to 30 knots veering west after
midnight. waves building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202607120800;;821709

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
builds to 30.1 inches over the lake by sunday morning. this surface 
high then shifts south toward the lower great lakes as pressure 
falls over the lake to 29.9 inches by sunday night. early next week 
a strong low of around 29.3 inches tracks northeast from the 
northern plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under weak high 
pressure wednesday into thursday at 30.0 inches.




lsz267-120800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt sat jul 11 2026

.rest of tonight...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet building to 1 to
3 feet. 
.sunday...south winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon, then backing south late. a chance of
showers and thunderstorms by mid afternoon. waves subsiding to
calm to 2 feet. 
.sunday night...south winds 10 to 20 knots veering southwest
after midnight, then diminishing to 5 to 15 knots late. waves
calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots becoming west 15 to
25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 5 to 15 knots
by mid afternoon. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202607120800;;821704

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
builds to 30.1 inches over the lake by sunday morning. this surface 
high then shifts south toward the lower great lakes as pressure 
falls over the lake to 29.9 inches by sunday night. early next week 
a strong low of around 29.3 inches tracks northeast from the 
northern plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under weak high 
pressure wednesday into thursday at 30.0 inches.




lsz162-120800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt sat jul 11 2026 /900 pm cdt sat jul 11 2026/

.rest of tonight...southeast winds less than 10 knots becoming
north 5 to 15 knots after midnight, then backing southwest late.
a chance of showers and thunderstorms after midnight. waves calm
to 2 feet. 
.sunday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.sunday night...southwest winds 15 to 25 knots. waves subsiding
to 1 to 3 feet, then building to 2 to 4 feet. 
.monday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday night...southwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...southwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.
.thursday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202607120800;;821706

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
builds to 30.1 inches over the lake by sunday morning. this surface 
high then shifts south toward the lower great lakes as pressure 
falls over the lake to 29.9 inches by sunday night. early next week 
a strong low of around 29.3 inches tracks northeast from the 
northern plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under weak high 
pressure wednesday into thursday at 30.0 inches.




lsz264-120800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt sat jul 11 2026

.rest of tonight...south winds 5 to 15 knots veering southwest
late. a slight chance of showers and thunderstorms after
midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. a chance of showers and
a slight chance of thunderstorms through early afternoon. waves
building to 2 to 4 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a slight chance of showers through
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.monday...west winds 15 to 25 knots backing southwest by mid
afternoon. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 
.monday night...southwest winds 20 to 30 knots veering west after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202607120800;;821705

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
builds to 30.1 inches over the lake by sunday morning. this surface 
high then shifts south toward the lower great lakes as pressure 
falls over the lake to 29.9 inches by sunday night. early next week 
a strong low of around 29.3 inches tracks northeast from the 
northern plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under weak high 
pressure wednesday into thursday at 30.0 inches.




lsz263-120800-
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-
1000 pm edt sat jul 11 2026

.rest of tonight...southeast winds 5 to 15 knots veering
southwest late. a slight chance of showers and thunderstorms
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a slight chance of showers and
thunderstorms through early afternoon. waves building to 2 to
4 feet. 
.sunday night...southwest winds 15 to 25 knots veering west late.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday night...southwest winds 20 to 30 knots veering west after
midnight. waves 4 to 7 feet occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...west winds 10 to 20 knots becoming north 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202607120800;;821707

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
builds to 30.1 inches over the lake by sunday morning. this surface 
high then shifts south toward the lower great lakes as pressure 
falls over the lake to 29.9 inches by sunday night. early next week 
a strong low of around 29.3 inches tracks northeast from the 
northern plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under weak high 
pressure wednesday into thursday at 30.0 inches.




lsz265-120800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt sat jul 11 2026

.rest of tonight...south winds 10 to 20 knots veering southwest
late. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots backing south in the
afternoon. a slight chance of showers and thunderstorms. waves
calm to 2 feet. 
.sunday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight, then veering west late. waves
building to 1 to 3 feet. 
.monday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.monday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east. a chance
of showers. waves calm to 2 feet. 

$$