fzus61 kbuf 090802
glflo 
expires:202607091500;;665034

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu jul 9 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 30.0 inch high will move off the mid atlantic 
coast today, giving way to a weak cold front that will cross the 
lake tonight through early friday. another 30.0 inch high will then 
build across the upper great lakes friday and the lower great lakes 
over the weekend, before drifting off the new england coast monday.


loz063>065-091500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu jul 9 2026

.today...southwest winds 5 to 15 knots becoming northwest. a
chance of showers and thunderstorms late. waves 1 foot or less. 
.tonight...northwest winds 5 to 15 knots. a chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight. waves 2 feet or less. 
.friday...northwest winds 10 knots or less. a chance of showers
in the morning. waves 1 foot or less. 
.friday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less. waves 2 feet or
less. 
.sunday...northeast winds 10 knots or less becoming south. waves
1 foot or less. 
.monday...southwest winds 5 to 15 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 090802
glflo 
expires:202607091500;;665033

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu jul 9 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 30.0 inch high will move off the mid atlantic 
coast today, giving way to a weak cold front that will cross the 
lake tonight through early friday. another 30.0 inch high will then 
build across the upper great lakes friday and the lower great lakes 
over the weekend, before drifting off the new england coast monday.


loz062-091500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu jul 9 2026

.today...southwest winds 5 to 10 knots becoming northwest and
increasing to 15 to 20 knots. a chance of showers and
thunderstorms early this afternoon. showers with a chance of
thunderstorms late. waves 2 feet or less. 
.tonight...west winds 5 to 15 knots becoming northwest 10 knots
or less. showers with a chance of thunderstorms early, then a
chance of showers and thunderstorms late in the evening. a chance
of showers after midnight. waves 2 feet or less. 
.friday...north winds less than 10 knots. waves 1 foot or less. 
.friday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less. waves 1 foot or
less. 
.sunday...northeast winds less than 10 knots becoming south.
waves 1 foot or less. 
.monday...southwest winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 090741
glfle 
expires:202607091415;;664464

open lake forecast for lake erie
national weather service cleveland oh
341 am edt thu jul 9 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 30.10 inches will linger over lake erie this morning before
a cold front drops south across the lake tonight into friday. 
high pressure 30.10 inches returns this weekend and will persist 
into early next week.


lez162>164-091415-
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-
341 am edt thu jul 9 2026

.today...west winds 5 to 10 knots. a slight chance of showers and
thunderstorms late. waves 1 foot or less. 
.tonight...west winds 5 to 10 knots. showers likely with a chance
of thunderstorms early, then a chance of showers and
thunderstorms. showers likely with a chance of thunderstorms
late. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming north. showers
likely with a chance of thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon. waves
1 foot or less. 
.friday night...north winds 5 to 10 knots becoming northeast. a
chance of showers overnight. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday...east winds 5 to 10 knots. waves 2 feet or less. 
.monday...northeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 090741
glfle 
expires:202607091415;;664465

open lake forecast for lake erie
national weather service cleveland oh
341 am edt thu jul 9 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 30.10 inches will linger over lake erie this morning before
a cold front drops south across the lake tonight into friday. 
high pressure 30.10 inches returns this weekend and will persist 
into early next week.


lez061-165>169-091415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-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-
341 am edt thu jul 9 2026

.today...southwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.tonight...west winds 5 to 10 knots. a slight chance of showers
and thunderstorms early, then a chance of showers and
thunderstorms. a chance of showers with a slight chance of
thunderstorms late. waves 2 feet or less. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers and thunderstorms in the morning, then a chance
of showers in the afternoon. waves 1 foot or less. 
.friday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.saturday...northeast winds 5 to 15 knots becoming east. waves
2 feet or less. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
2 feet or less. 
.monday...south winds 10 knots or less becoming southwest. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 090752
glflh 
expires:202607091600;;664731

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt thu jul 9 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a low pressure system, 29.70 inches, and trailing cold
front will trek through the great lakes region today, bringing
the potential for rain showers and isolated thunderstorms. a high
pressure system, 30.20 inches, is then expected to develop over
the region and persist throughout the weekend.


lhz462>464-091600-
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-
352 am edt thu jul 9 2026

.today...light and variable winds becoming north 5 to 10 knots
late in the afternoon. a chance of showers in the morning...then
showers likely and a chance of thunderstorms in the afternoon.
waves 2 feet or less. 
.tonight...light and variable winds becoming north 5 to 10 knots
after midnight. a chance of showers and thunderstorms in the
evening. waves 2 feet or less. 
.friday...north winds 5 to 10 knots. waves 2 feet or less. 
.friday night...north winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday...light and variable winds becoming east 5 to 10 knots .
waves 2 feet or less. 
.monday...south winds 5 to 10 knots becoming southwest 10 to
15 knots by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 090752
glflh 
expires:202607091600;;664729

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt thu jul 9 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a low pressure system, 29.70 inches, and trailing cold
front will trek through the great lakes region today, bringing
the potential for rain showers and isolated thunderstorms. a high
pressure system, 30.20 inches, is then expected to develop over
the region and persist throughout the weekend.


lhz361-091600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
352 am edt thu jul 9 2026

.today...light and variable winds. scattered to numerous showers
in the morning. waves 2 feet or less.
.tonight...light and variable winds becoming northwest 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.friday...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds becoming southeast 5 to
10 knots. waves 2 feet or less. 
.sunday...south winds 5 to 10 knots. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 3 to 5 feet by midnight. 


$$

fzus63 kdtx 090752
glfsc 
expires:202607091600;;664734

lake st clair forecast
national weather service detroit/pontiac mi
352 am edt thu jul 9 2026

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

.synopsis...a low pressure system, 29.70 inches, and trailing cold
front will trek through the great lakes region today, bringing
the potential for showers and isolated thunderstorms. a high
pressure system, 30.20 inches, is then expected to develop over
the region and persist throughout the weekend.


lcz460-091600-
lake st clair-
352 am edt thu jul 9 2026

.today...light and variable winds becoming southwest 5 to 10 knots
in the late morning and afternoon. mostly sunny until mid afternoon
becoming mostly cloudy. a chance of showers and thunderstorms 
early in the afternoon. showers likely and a chance of 
thunderstorms late in the afternoon. waves 2 feet or less.
.tonight...west winds 5 to 10 knots backing to the southeast late in
the evening...then veering to the southwest after midnight veering
to the north early in the morning. mostly cloudy becoming partly
cloudy by midnight becoming mostly cloudy. showers likely and a
chance of thunderstorms in the evening...then a chance of showers
after midnight. waves 2 feet or less.
.friday...north winds 5 to 10 knots. partly sunny. a chance of light
showers in the late morning and early afternoon. waves 2 feet or
less.
.friday night...northeast winds 10 to 15 knots becoming north 5 to
10 knots after midnight. mostly clear. waves 2 feet or less.
.saturday...northeast winds 5 to 10 knots increasing to 10 to 15
knots in the evening. mostly clear. waves 2 feet or less.
.sunday...east winds 5 to 10 knots. clear. waves 2 feet or less.
.monday...south winds 5 to 10 knots. clear. waves 2 feet or less.

$$

fzus63 kdtx 090752
glflh 
expires:202607091600;;664730

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt thu jul 9 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a low pressure system, 29.70 inches, and trailing cold
front will trek through the great lakes region today, bringing
the potential for rain showers and isolated thunderstorms. a high
pressure system, 30.20 inches, is then expected to develop over
the region and persist throughout the weekend.


lhz362-363-091600-
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-
352 am edt thu jul 9 2026

.today...light and variable winds. showers in the morning...then
a chance of showers in the afternoon. waves 2 feet or less. 
.tonight...light and variable winds becoming north 5 to 10 knots
early in the morning. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.sunday...light and variable winds becoming southeast 5 to
10 knots. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . waves 1 to 3 feet. 


$$

fzus63 kmkx 090804
glflm 
expires:202607091530;;665125

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt thu jul 9 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...

light south winds will become north to northeast behind a cold 
front moving southward across the lake today into tonight. some 
fog may develop at times during this period, with patchy dense fog
possible, as warm air remains over the cooler lake waters. winds 
will remain north to northeast on friday, as high pressure around 
30.0 inches builds into the the region from the north. the high 
should shift southeast over the weekend, which should continue to 
bring light to modest winds.


lmz261-362-364-366-563-565-567-868-091530-
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-
304 am cdt thu jul 9 2026

sheboygan wi to pentwater mi north...

.today...north winds 10 to 15 kt. patchy fog this morning. chance
of showers and slight chance of thunderstorms this morning, then
slight chance of showers this afternoon. waves 1 to 2 ft. 
.tonight...north winds 10 to 15 kt diminishing to 5 to 10 kt.
patchy fog overnight. waves 1 to 2 ft. 
.friday...north winds 10 to 15 kt increasing to 15 to 25 kt.
patchy fog in the morning. waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt overnight. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...east winds 5 to 10 kt becoming northeast 10 to 20 kt
in the afternoon. waves 1 ft or less. 
.saturday night...east winds 10 to 20 kt veering to south 10 to
15 kt. waves 1 ft or less. 
.sunday...southwest winds 10 to 20 kt. waves 1 to 2 ft. 
.monday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 090804
glflm 
expires:202607091530;;665126

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt thu jul 9 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...

light south winds will become north to northeast behind a cold 
front moving southward across the lake today into tonight. some 
fog may develop at times during this period, with patchy dense fog
possible, as warm air remains over the cooler lake waters. winds 
will remain north to northeast on friday, as high pressure around 
30.0 inches builds into the the region from the north. the high 
should shift southeast over the weekend, which should continue to 
bring light to modest winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-091530-
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-
304 am cdt thu jul 9 2026

sheboygan wi to pentwater mi south...

.today...south winds 10 to 15 kt becoming southwest. chance of
showers and slight chance of thunderstorms. waves 1 to 2 ft. 
.tonight...north winds 10 to 15 kt. slight chance of showers and
thunderstorms in the evening. patchy fog overnight. waves 1 to
2 ft. 
.friday...north winds 10 to 15 kt increasing to 15 to 25 kt.
patchy fog in the morning. waves 1 to 3 ft building to 2 to 4 ft.
.friday night...north winds 15 to 25 kt becoming northeast 10 to
15 kt overnight. waves 2 to 4 ft. 
.saturday...east winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 2 ft. 
.saturday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt. waves 1 to 2 ft. 
.sunday...southeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less. 
.monday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 090801
glfls 
expires:202607092000;;664946

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 9 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 29.9 inch trough is analyzed over the lake this morning, extending 
from low pressure currently moving into quebec. weak high pressure 
then builds to 30.0 inches over lake superior and northern ontario 
today and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz267-092000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt thu jul 9 2026

...dense fog advisory in effect until 8 am edt this morning...

.early this morning...north winds 5 to 15 knots. patchy dense
fog. waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots increasing to 10 to
20 knots late. patchy dense fog. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots backing southeast
after midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202607092000;;664941

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 9 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 29.9 inch trough is analyzed over the lake this morning, extending 
from low pressure currently moving into quebec. weak high pressure 
then builds to 30.0 inches over lake superior and northern ontario 
today and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt thu jul 9 2026 /301 am cdt thu jul 9 2026/

...dense fog advisory in effect until 8 am edt /7 am cdt/ this
morning...

.early this morning...north winds less than 10 knots. patchy
dense fog. waves calm to 2 feet. 
.today...east winds less than 10 knots becoming north 5 to
15 knots in the afternoon, then diminishing to less than 10 knots
late. patchy dense fog through early afternoon. waves calm to
2 feet. 
.tonight...north winds less than 10 knots. waves calm to 2 feet. 
.friday...north winds less than 10 knots becoming east 5 to
15 knots in the afternoon, then backing northeast late. a slight
chance of showers by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. a slight chance of showers and
thunderstorms. waves calm to 2 feet. 
.saturday...east winds less than 10 knots becoming north 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds less than 10 knots backing
north after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202607092000;;664942

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 9 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 29.9 inch trough is analyzed over the lake this morning, extending 
from low pressure currently moving into quebec. weak high pressure 
then builds to 30.0 inches over lake superior and northern ontario 
today and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz263-092000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt thu jul 9 2026

...dense fog advisory in effect until 8 am edt this morning...

.early this morning...west winds less than 10 knots. patchy dense
fog. waves calm to 2 feet. 
.today...east winds less than 10 knots backing north in the
afternoon, then becoming northeast 5 to 15 knots late. patchy
dense fog through early afternoon. waves calm to 2 feet. 
.tonight...west winds less than 10 knots backing southwest after
midnight. waves calm to 2 feet. 
.friday...east winds less than 10 knots backing northeast in the
afternoon, then becoming east 5 to 15 knots late. waves calm to
2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight. a slight chance of showers and thunderstorms. waves
calm to 2 feet. 
.saturday...south winds less than 10 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds less than 10 knots becoming
southwest 5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 2 to
4 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202607092000;;664943

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 9 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 29.9 inch trough is analyzed over the lake this morning, extending 
from low pressure currently moving into quebec. weak high pressure 
then builds to 30.0 inches over lake superior and northern ontario 
today and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz264-092000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt thu jul 9 2026

...dense fog advisory in effect until 8 am edt this morning...

.early this morning...west winds less than 10 knots. patchy dense
fog. waves calm to 2 feet. 
.today...northwest winds less than 10 knots backing west late.
patchy dense fog. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.friday...southeast winds less than 10 knots increasing to 5 to
15 knots late. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. a slight chance of
showers after midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots diminishing to less
than 10 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds less than 10 knots veering
south after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202607092000;;664944

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 9 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 29.9 inch trough is analyzed over the lake this morning, extending 
from low pressure currently moving into quebec. weak high pressure 
then builds to 30.0 inches over lake superior and northern ontario 
today and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz265-092000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt thu jul 9 2026

...dense fog advisory in effect until 8 am edt this morning...

.early this morning...northeast winds 5 to 15 knots. patchy dense
fog. waves calm to 2 feet. 
.today...west winds 5 to 15 knots veering northeast in the
afternoon, then veering east late. patchy dense fog through early
afternoon. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing south after
midnight, then veering northwest late. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering east in the
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a slight chance of showers after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming southwest 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...west winds 10 to 20 knots becoming southwest 20 to
30 knots. waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202607092000;;664945

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 9 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 29.9 inch trough is analyzed over the lake this morning, extending 
from low pressure currently moving into quebec. weak high pressure 
then builds to 30.0 inches over lake superior and northern ontario 
today and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz266-092000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt thu jul 9 2026

...dense fog advisory in effect until 8 am edt this morning...

.early this morning...north winds 5 to 15 knots. patchy dense
fog. waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots. patchy dense fog through
early afternoon. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing northwest late. waves
calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots becoming southwest 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$