fzus61 kbuf 042001
glflo 
expires:202607050300;;414443

open lake forecast for lake ontario
national weather service buffalo ny
401 pm edt sat jul 4 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 frontal boundary will settle south across the 
lake this afternoon into this evening. meanwhile, a 30.2 inch high 
will build from hudson bay to quebec and northern new england by 
sunday night. a weak 29.9 inch low will then develop over ohio late 
sunday and move to the mid atlantic by late monday. a broad 30.1 
inch high is then forecast to build into the great lakes tuesday 
through wednesday. a cold frontal boundary will slide southeast 
across the lake thursday.


loz062-050300-
lake ontario open waters from the niagara river to hamlin beach-
401 pm edt sat jul 4 2026

.tonight...north winds 10 knots or less becoming northeast. waves
1 foot or less. 
.sunday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet. 
.sunday night...east winds 5 to 15 knots becoming northeast.
waves 2 feet or less. 
.monday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. a chance of showers. waves 1 to 3 feet. 
.monday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the evening. waves 1 to 3 feet. 
.tuesday...northeast winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.wednesday...southwest winds 10 knots or less. waves 1 foot or
less. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers. waves 1 foot or less. 

$$

fzus61 kbuf 042001
glflo 
expires:202607050300;;414444

open lake forecast for lake ontario
national weather service buffalo ny
401 pm edt sat jul 4 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 frontal boundary will settle south across the 
lake this afternoon into this evening. meanwhile, a 30.2 inch high 
will build from hudson bay to quebec and northern new england by 
sunday night. a weak 29.9 inch low will then develop over ohio late 
sunday and move to the mid atlantic by late monday. a broad 30.1 
inch high is then forecast to build into the great lakes tuesday 
through wednesday. a cold frontal boundary will slide southeast 
across the lake thursday.


loz063>065-050300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 pm edt sat jul 4 2026

.tonight...northwest winds less than 10 knots. waves 1 foot or
less. 
.sunday...northeast winds 5 to 10 knots. waves 1 foot or less. 
.sunday night...northeast winds 5 to 10 knots becoming east. a
chance of showers overnight. waves 2 feet or less. 
.monday...east winds 5 to 15 knots. a chance of showers. waves
2 feet or less. 
.monday night...east winds 5 to 15 knots. a chance of showers.
waves 2 feet or less. 
.tuesday...east winds 10 knots or less becoming southwest. a
chance of showers during the day. waves 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots. waves 1 foot or less.
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers. waves 1 foot or less. 

$$

fzus61 kcle 041943
glfle 
expires:202607050215;;413875

open lake forecast for lake erie
national weather service cleveland oh
343 pm edt sat jul 4 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...
a low pressure system 29.90 inches and cold front will enter the 
region tonight. the cold front will cross the lake on sunday, but 
the low pressure system will slowly meander east across the ohio 
river valley through tuesday. high pressure 30.10 inches will build 
from the south on wednesday and remain over the region through 
thursday.


lez162>164-050215-
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-
343 pm edt sat jul 4 2026

.tonight...southwest winds 5 to 10 knots becoming northeast. a
chance of showers and thunderstorms. a chance of showers with a
slight chance of thunderstorms late. waves 1 foot or less. 
.sunday...northeast winds 5 to 10 knots. showers likely with a
slight chance of thunderstorms in the morning, then showers
likely with a chance of thunderstorms in the afternoon. waves
2 feet or less. 
.sunday night...northeast winds 10 to 15 knots. a chance of
showers and thunderstorms in the evening, then a chance of
showers overnight. waves 1 to 3 feet. 
.monday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.monday night...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.tuesday...northeast winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.wednesday...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms thursday night. waves 2 feet or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041943
glfle 
expires:202607050215;;413877

open lake forecast for lake erie
national weather service cleveland oh
343 pm edt sat jul 4 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...
a low pressure system 29.90 inches and cold front will enter the 
region tonight. the cold front will cross the lake on sunday, but 
the low pressure system will slowly meander east across the ohio 
river valley through tuesday. high pressure 30.10 inches will build 
from the south on wednesday and remain over the region through 
thursday.


lez061-168-169-050215-
ripley to buffalo ny extending from 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-
343 pm edt sat jul 4 2026

.tonight...west winds less than 10 knots becoming east. a slight
chance of showers and thunderstorms this evening. a slight chance
of showers and thunderstorms late. waves 1 foot or less. 
.sunday...northeast winds 5 to 10 knots. a chance of showers and
thunderstorms in the morning, then a slight chance of showers and
thunderstorms early in the afternoon. a chance of showers and
thunderstorms late. waves 2 feet or less. 
.sunday night...northeast winds 10 to 15 knots. a chance of
showers and thunderstorms. waves 1 to 3 feet. 
.monday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.monday night...northeast winds 5 to 15 knots. a chance of
showers and thunderstorms in the evening, then a chance of
showers overnight. waves 1 to 3 feet. 
.tuesday...northeast winds 10 knots or less. waves 2 feet or
less. 
.wednesday...southwest winds 10 knots or less. waves 1 foot or
less. 
.thursday...southwest winds 5 to 10 knots. showers likely with a
chance of thunderstorms thursday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041943
glfle 
expires:202607050215;;413876

open lake forecast for lake erie
national weather service cleveland oh
343 pm edt sat jul 4 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...
a low pressure system 29.90 inches and cold front will enter the 
region tonight. the cold front will cross the lake on sunday, but 
the low pressure system will slowly meander east across the ohio 
river valley through tuesday. high pressure 30.10 inches will build 
from the south on wednesday and remain over the region through 
thursday.


lez165>167-050215-
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-
343 pm edt sat jul 4 2026

.tonight...west winds 10 knots or less becoming east. a slight
chance of showers and thunderstorms from late evening on. waves
1 foot or less. 
.sunday...east winds 5 to 15 knots becoming northeast. a chance
of showers with a slight chance of thunderstorms early, then
showers likely with a slight chance of thunderstorms late in the
morning. a chance of showers and thunderstorms in the afternoon.
waves 2 feet or less. 
.sunday night...northeast winds 10 to 15 knots. a chance of
showers and thunderstorms. waves 2 to 4 feet. 
.monday...northeast winds 10 to 15 knots. a chance of showers and
thunderstorms in the morning, then a chance of showers in the
afternoon. waves 2 to 4 feet. 
.monday night...northeast winds 10 to 15 knots. a chance of
showers in the evening. waves 2 to 3 feet. 
.tuesday...northeast winds 10 knots or less. waves 2 feet or
less. 
.wednesday...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots. a chance of showers
during the day, then showers likely with a chance of
thunderstorms thursday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 041944
glfsc 
expires:202607050345;;413887

lake st clair forecast
national weather service detroit/pontiac mi
344 pm edt sat jul 4 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 weak front will drift through today shifting wind
directions toward the northeast. scattered to numerous showers
with some embedded thunderstorms will also be possible for the
remainder of the weekend, favored across the southern great
lakes. high pressure, 30.10 inches, will build in monday and
tuesday.


lcz460-050345-
lake st clair-
344 pm edt sat jul 4 2026

.tonight...north winds 5 to 10 knots. partly cloudy. numerous
showers and scattered thunderstorms early in the evening...then
scattered showers and thunderstorms late in the evening. waves 2
feet or less.
.sunday...northeast winds 5 to 10 knots increasing to 10 to 15 knots
late in the afternoon. mostly cloudy. a chance of showers and
thunderstorms in the afternoon. waves 2 feet or less.
.sunday night...northeast winds 10 to 15 knots. mostly cloudy early
in the evening becoming partly cloudy. a chance of showers and
thunderstorms early in the evening. waves 2 feet or less.
.monday...northeast winds 10 to 15 knots. mostly sunny. waves 2 feet
or less.
.monday night...northeast winds 10 to 15 knots diminishing to 5 to
10 knots after midnight. mostly clear. waves 2 feet or less.
.tuesday...northeast winds 5 to 10 knots. mostly sunny becoming
clear. waves 2 feet or less.
.wednesday...south winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.thursday...west winds 10 to 15 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 041943
glflh 
expires:202607050345;;413883

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt sat jul 4 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 weak front will drift through today shifting wind
directions toward the northeast. scattered to numerous showers
with some embedded thunderstorms will also be possible for the
remainder of the weekend, favored across the southern great
lakes. high pressure, 30.10 inches, will build in monday and
tuesday.


lhz462>464-050345-
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-
343 pm edt sat jul 4 2026

.tonight...north winds 5 to 10 knots. waves 2 feet or less. 
.sunday...northeast winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. waves 1 to 3 feet. 
.sunday night...north winds 10 to 15 knots becoming northeast
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet after midnight. 
.monday...northeast winds 5 to 10 knots. waves 1 to 3 feet. 
.monday night...north winds 10 to 15 knots becoming northeast
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.tuesday...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then backing
to the south . waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 


$$

fzus63 kdtx 041943
glflh 
expires:202607050345;;413882

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt sat jul 4 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 weak front will drift through today shifting wind
directions toward the northeast. scattered to numerous showers
with some embedded thunderstorms will also be possible for the
remainder of the weekend, favored across the southern great
lakes. high pressure, 30.10 inches, will build in monday and
tuesday.


lhz362-363-050345-
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-
343 pm edt sat jul 4 2026

.tonight...north winds 5 to 10 knots. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.monday...north winds 5 to 10 knots. waves 1 to 3 feet. 
.monday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.tuesday...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then backing
to the south . a chance of showers by midnight. waves 2 feet or
less. 
.thursday...southwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 


$$

fzus63 kdtx 041943
glflh 
expires:202607050345;;413881

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt sat jul 4 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 weak front will drift through today shifting wind
directions toward the northeast. scattered to numerous showers
with some embedded thunderstorms will also be possible for the
remainder of the weekend, favored across the southern great
lakes. high pressure, 30.10 inches, will build in monday and
tuesday.


lhz361-050345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
343 pm edt sat jul 4 2026

.tonight...light and variable winds becoming northeast 5 to
10 knots early in the morning. waves 2 feet or less. 
.sunday...northeast winds 5 to 10 knots until late afternoon
becoming light and variable. waves 2 feet or less. 
.sunday night...light and variable winds. waves 2 feet or less. 
.monday...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less. 
.monday night...light and variable winds. waves 2 feet or less. 
.tuesday...light and variable winds becoming southwest 5 to
10 knots late in the evening. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming north 5 to 10 knots
early in the evening backing to the southwest. a chance of
showers . waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 


$$

fzus63 kmkx 041953
glflm 
expires:202607050315;;414150

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt sat jul 4 2026

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

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

.synopsis...

high pressure around 30.1 inches over the upper great lakes 
will remain in place through monday. weak low pressure around 
29.9 inches will slowly move east across northern illinois into
indiana during this time. scattered showers and some 
thunderstorms are expected over mainly the south half of lake
michigan through this evening. additional showers are possible
sunday. areas of dense fog developed over lake michigan, mainly
in central portions, and is expected to expand southward
overnight. the marine dense fog advisory may need to be
expanded. there is an expectation that the fog would diminish 
by mid sunday morning with increasing northeast winds.


lmz669-671-673-675-870-872-874-876-050315-
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 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-
253 pm cdt sat jul 4 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...dense fog advisory in effect until 10 am cdt sunday...

.tonight...north winds 10 to 15 kt becoming northeast. areas of
dense fog. slight chance of showers. waves 1 to 3 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
patchy dense fog in the morning. waves 2 to 4 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 2 to 4 ft. 
.monday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt overnight. waves 2 to 4 ft. 
.tuesday...north winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.tuesday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 ft or less. 
.wednesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft. 
.thursday...southwest winds 10 to 20 kt becoming west 15 to
25 kt. chance of showers. waves 2 to 4 ft.  

$$

fzus63 kmkx 041953
glflm 
expires:202607050315;;414148

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt sat jul 4 2026

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

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

.synopsis...

high pressure around 30.1 inches over the upper great lakes 
will remain in place through monday. weak low pressure around 
29.9 inches will slowly move east across northern illinois into
indiana during this time. scattered showers and some 
thunderstorms are expected over mainly the south half of lake
michigan through this evening. additional showers are possible
sunday. areas of dense fog developed over lake michigan, mainly
in central portions, and is expected to expand southward
overnight. the marine dense fog advisory may need to be
expanded. there is an expectation that the fog would diminish 
by mid sunday morning with increasing northeast winds.


lmz261-362-364-563-050315-
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 rock island passage to sturgeon bay wi-
253 pm cdt sat jul 4 2026

sturgeon bay wi to point betsie mi north...

.tonight...northeast winds 10 to 15 kt. waves 1 to 2 ft. 
.sunday...northeast winds 10 to 20 kt. waves 1 to 2 ft. 
.sunday night...northeast winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.monday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less. 
.monday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 ft or less. 
.tuesday...southwest winds 10 to 15 kt. waves 1 to 2 ft. 
.tuesday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 ft or less. 
.wednesday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. chance of showers. waves 1 to 2 ft. 
.thursday...north winds 10 to 20 kt. chance of showers. waves
1 to 2 ft.  

$$

fzus63 kmkx 041953
glflm 
expires:202607050315;;414149

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt sat jul 4 2026

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

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

.synopsis...

high pressure around 30.1 inches over the upper great lakes 
will remain in place through monday. weak low pressure around 
29.9 inches will slowly move east across northern illinois into
indiana during this time. scattered showers and some 
thunderstorms are expected over mainly the south half of lake
michigan through this evening. additional showers are possible
sunday. areas of dense fog developed over lake michigan, mainly
in central portions, and is expected to expand southward
overnight. the marine dense fog advisory may need to be
expanded. there is an expectation that the fog would diminish 
by mid sunday morning with increasing northeast winds.


lmz366-565-567-868-050315-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
253 pm cdt sat jul 4 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...dense fog advisory in effect until 10 am cdt sunday...

.tonight...north winds 10 to 15 kt becoming northeast 5 to 10 kt.
areas of dense fog. waves 1 to 3 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
patchy dense fog in the morning. waves 2 to 4 ft. 
.sunday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt after midnight, then becoming northeast late. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.monday...northeast winds 5 to 10 kt becoming north 10 to 20 kt
in the afternoon. waves 1 to 2 ft building to 1 to 3 ft. 
.monday night...north winds 10 to 20 kt diminishing to 5 to 10 kt
overnight. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tuesday...north winds 5 to 10 kt backing to southwest. waves
1 ft or less. 
.tuesday night...southwest winds 5 to 10 kt. waves 1 ft or less. 
.wednesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft. 
.thursday...west winds 10 to 20 kt becoming north 15 to 25 kt.
chance of showers. waves 2 to 4 ft.  

$$

fzus63 kmkx 041953
glflm 
expires:202607050315;;414151

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt sat jul 4 2026

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

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

.synopsis...

high pressure around 30.1 inches over the upper great lakes 
will remain in place through monday. weak low pressure around 
29.9 inches will slowly move east across northern illinois into
indiana during this time. scattered showers and some 
thunderstorms are expected over mainly the south half of lake
michigan through this evening. additional showers are possible
sunday. areas of dense fog developed over lake michigan, mainly
in central portions, and is expected to expand southward
overnight. the marine dense fog advisory may need to be
expanded. there is an expectation that the fog would diminish 
by mid sunday morning with increasing northeast winds.


lmz080-777-779-878-050315-
lake michigan from michigan city in to st. joseph mi 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 st. joseph to south haven mi 5 nm offshore to
mid lake-
253 pm cdt sat jul 4 2026

winthrop harbor il to south haven mi south...

.tonight...north winds 10 to 15 kt diminishing to 5 to 10 kt.
patchy fog. slight chance of showers. waves 1 to 2 ft. 
.sunday...north winds 5 to 10 kt increasing to 10 to 20 kt.
patchy fog in the morning. waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 3 ft. 
.monday night...north winds 10 to 15 kt becoming northeast 5 to
10 kt. waves 1 to 3 ft. 
.tuesday...north winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.tuesday night...northeast winds 5 to 10 kt veering to south.
waves 1 ft or less. 
.wednesday...southwest winds 5 to 10 kt becoming south. waves
nearly calm. 
.thursday...southwest winds 10 to 20 kt. chance of showers. waves
1 to 2 ft.  

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414393

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat jul 4 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 30.2 inch high over hudson bay will extend a 30.0 inch ridge south 
over lake superior through sunday. late sunday night into monday, 
the high is pushed southeast into quebec at 30.1 inches by a 29.6 
inch low over northern manitoba. the low deepens to 29.5 inches over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz162-050800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat jul 4 2026 /301 pm cdt sat jul 4 2026/

.late this afternoon...northeast winds 15 to 25 knots. a slight
chance of showers. waves 1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of showers. waves
subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...north winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...north winds less than 10 knots becoming southwest
5 to 15 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots. a chance of showers
through midnight, then showers likely after midnight. waves calm
to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. showers likely. a
chance of showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414394

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat jul 4 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 30.2 inch high over hudson bay will extend a 30.0 inch ridge south 
over lake superior through sunday. late sunday night into monday, 
the high is pushed southeast into quebec at 30.1 inches by a 29.6 
inch low over northern manitoba. the low deepens to 29.5 inches over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz263-050800-
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 pm edt sat jul 4 2026

.late this afternoon...northeast winds 15 to 25 knots. a slight
chance of showers. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots veering east after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.monday...east winds less than 10 knots. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. a chance of showers. waves calm to
2 feet. 
.wednesday...northeast winds 5 to 15 knots. showers likely. a
chance of showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414395

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat jul 4 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 30.2 inch high over hudson bay will extend a 30.0 inch ridge south 
over lake superior through sunday. late sunday night into monday, 
the high is pushed southeast into quebec at 30.1 inches by a 29.6 
inch low over northern manitoba. the low deepens to 29.5 inches over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz264-050800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sat jul 4 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...north winds 5 to 15 knots veering east late. 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 becoming southeast less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. a chance of showers. waves calm to
2 feet. 
.wednesday...north winds less than 10 knots increasing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming northwest less
than 10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414396

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat jul 4 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 30.2 inch high over hudson bay will extend a 30.0 inch ridge south 
over lake superior through sunday. late sunday night into monday, 
the high is pushed southeast into quebec at 30.1 inches by a 29.6 
inch low over northern manitoba. the low deepens to 29.5 inches over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz265-050800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sat jul 4 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
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 veering southeast after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots veering west after
midnight. a chance of showers after midnight. waves calm to
2 feet. 
.wednesday...northeast winds 5 to 15 knots backing north. showers
likely. a chance of showers. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414397

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat jul 4 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 30.2 inch high over hudson bay will extend a 30.0 inch ridge south 
over lake superior through sunday. late sunday night into monday, 
the high is pushed southeast into quebec at 30.1 inches by a 29.6 
inch low over northern manitoba. the low deepens to 29.5 inches over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz266-050800-
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 pm edt sat jul 4 2026

.late this afternoon...north winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...north winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast late. waves
calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots veering southeast
after midnight, then diminishing to less than 10 knots late.
waves calm to 2 feet. 
.monday...southeast winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots veering west after
midnight. a chance of showers. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots backing north. a
chance of showers. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414398

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat jul 4 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 30.2 inch high over hudson bay will extend a 30.0 inch ridge south 
over lake superior through sunday. late sunday night into monday, 
the high is pushed southeast into quebec at 30.1 inches by a 29.6 
inch low over northern manitoba. the low deepens to 29.5 inches over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz267-050800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sat jul 4 2026

.late this afternoon...north winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight, then becoming east 10 to 20 knots late. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots backing north late. waves calm
to 2 feet. 
.sunday night...north winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.monday...west winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering north by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots veering southwest
after midnight. a chance of showers after midnight. waves calm to
2 feet. 
.wednesday...west winds 5 to 15 knots veering north. a chance of
showers, then showers likely. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$