fzus61 kbuf 240202
glflo 
expires:202606240900;;801247

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue jun 23 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 29.8 inch low will move off the southern new england 
coast through tonight. a 30.1 inch high will then build into the 
ohio valley tonight through wednesday, then drift to the eastern 
seaboard wednesday night through thursday. a weak 29.9 inch low is 
then forecast to move from the central great lakes thursday to 
southern quebec friday, then the canadian maritimes saturday. a 30.0 
inch high will then build across the lower great lakes this weekend.


loz063>065-240900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt tue jun 23 2026

.overnight...west winds 5 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.wednesday night...west winds 5 to 15 knots becoming south less
than 10 knots. waves 2 feet or less. 
.thursday...south winds 5 to 10 knots becoming southeast. a
chance of showers in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...southeast winds 5 to 10 knots becoming
southwest. showers with a chance of thunderstorms in the evening,
then showers overnight. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.saturday...north winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.sunday...northwest winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 240202
glflo 
expires:202606240900;;801246

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue jun 23 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 29.8 inch low will move off the southern new england 
coast through tonight. a 30.1 inch high will then build into the 
ohio valley tonight through wednesday, then drift to the eastern 
seaboard wednesday night through thursday. a weak 29.9 inch low is 
then forecast to move from the central great lakes thursday to 
southern quebec friday, then the canadian maritimes saturday. a 30.0 
inch high will then build across the lower great lakes this weekend.


loz062-240900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt tue jun 23 2026

.overnight...northwest winds 5 to 15 knots. waves 1 to
2 feet. 
.wednesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.wednesday night...southwest winds 10 knots or less becoming
south. a chance of showers overnight. waves 1 foot or less. 
.thursday...southeast winds 10 knots or less. showers likely in
the morning, then showers with a chance of thunderstorms in the
afternoon. waves 1 foot or less. 
.thursday night...southeast winds 10 knots or less becoming west.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 1 foot or less. 
.friday...west winds less than 10 knots becoming north. waves
1 foot or less. 
.saturday...northeast winds less than 10 knots becoming
northwest. waves 1 foot or less. 
.sunday...light and variable winds. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240111
glfle 
expires:202606240815;;800329

open lake forecast for lake erie
national weather service cleveland oh
911 pm edt tue jun 23 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure 30.20 inches will persist over the region through
wednesday. weak low pressure 29.90 inches will move east through
the great lakes on thursday and extend a cold front across the
area on friday. a ridge averaging 30.10 inches will build from the
northwest on saturday into sunday.


lez061-167>169-240815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
911 pm edt tue jun 23 2026

.overnight...northwest winds 5 to 15 knots becoming north.
waves 1 to 2 feet. 
.wednesday...northwest winds 10 knots or less becoming west.
waves 1 foot or less. 
.wednesday night...southwest winds 10 knots or less becoming
southeast 10 to 15 knots. a chance of showers overnight. waves
2 feet or less. 
.thursday...south winds 10 to 15 knots becoming southwest.
showers likely in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 10 knots. a chance of
showers and thunderstorms in the evening, then a chance of
showers overnight. waves 1 to 2 feet. 
.friday...west winds 10 knots or less becoming northeast. a
chance of showers friday night. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less. waves 1 foot or
less. 
.sunday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240111
glfle 
expires:202606240815;;800327

open lake forecast for lake erie
national weather service cleveland oh
911 pm edt tue jun 23 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure 30.20 inches will persist over the region through
wednesday. weak low pressure 29.90 inches will move east through
the great lakes on thursday and extend a cold front across the
area on friday. a ridge averaging 30.10 inches will build from the
northwest on saturday into sunday.


lez162-163-240815-
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-
911 pm edt tue jun 23 2026

.overnight...northeast winds 10 knots or less. waves 1 foot
or less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots. waves 1 foot or less. 
.wednesday night...southeast winds 5 to 10 knots becoming
southwest. showers likely overnight. waves 1 foot or less. 
.thursday...southwest winds around 10 knots. a chance of showers
in the morning, then a chance of showers and thunderstorms in the
afternoon. waves 1 to 2 feet. 
.thursday night...west winds 5 to 10 knots becoming northwest. a
chance of showers and thunderstorms in the evening. waves 1 foot
or less. 
.friday...northeast winds 5 to 10 knots. a chance of showers
friday night. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240111
glfle 
expires:202606240815;;800328

open lake forecast for lake erie
national weather service cleveland oh
911 pm edt tue jun 23 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure 30.20 inches will persist over the region through
wednesday. weak low pressure 29.90 inches will move east through
the great lakes on thursday and extend a cold front across the
area on friday. a ridge averaging 30.10 inches will build from the
northwest on saturday into sunday.


lez164>166-240815-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
911 pm edt tue jun 23 2026

.overnight...north winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...north winds less than 10 knots. waves 1 foot or
less. 
.wednesday night...east winds 5 to 15 knots becoming south. a
chance of showers overnight. waves 2 feet or less. 
.thursday...south winds 10 to 15 knots becoming southwest. a
chance of showers. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 10 knots. a chance of
showers and thunderstorms in the evening. waves 2 feet or less. 
.friday...south winds 10 knots or less becoming northeast. a
chance of showers friday night. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less. waves 1 foot or
less. 
.sunday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 240140
glflh 
expires:202606240945;;800931

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt tue jun 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.20 inches, will build into the great
lakes region, producing light winds through wednesday. low
pressure, 29.90 inches will move toward lower michigan thursday
bringing a slight increase in winds speeds as they become south
or southwest.


lhz361-240945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 pm edt tue jun 23 2026

.rest of tonight...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon. waves 2 feet or less. 
.wednesday night...east winds 5 to 10 knots. a chance of showers
after midnight. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots until late afternoon
becoming light and variable. a chance of showers in the morning.
waves 2 feet or less. 
.thursday night...light and variable winds becoming northwest
5 to 10 knots after midnight. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.sunday...light and variable winds becoming southeast 10 to
15 knots. a chance of showers by midnight. waves 2 feet or less
building to 4 to 6 feet . waves occasionally around 8 feet. 


$$

fzus63 kdtx 240140
glflh 
expires:202606240945;;800933

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt tue jun 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.20 inches, will build into the great
lakes region, producing light winds through wednesday. low
pressure, 29.90 inches will move toward lower michigan thursday
bringing a slight increase in winds speeds as they become south
or southwest.


lhz462>464-240945-
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-
940 pm edt tue jun 23 2026

.rest of tonight...light and variable winds. waves 2 feet or
less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots in the afternoon. waves 2 feet or less. 
.wednesday night...southeast winds 5 to 10 knots. a chance of
showers in the evening...then showers likely after midnight.
waves 2 feet or less. 
.thursday...south winds 5 to 10 knots backing to the east early
in the afternoon. a chance of showers in the morning...then a
chance of showers and thunderstorms in the afternoon. waves
2 feet or less. 
.thursday night...light and variable winds becoming north 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.friday...north winds 5 to 10 knots in the morning becoming light
and variable...then becoming north 5 to 10 knots late in the
afternoon becoming light and variable. waves 2 feet or less. 
.saturday...light and variable winds becoming north 5 to 10 knots
until early evening...then becoming light and variable by
midnight. waves 2 feet or less. 
.sunday...light and variable winds becoming northeast 5 to
10 knots early in the evening...then veering to the east by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 240140
glflh 
expires:202606240945;;800932

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt tue jun 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.20 inches, will build into the great
lakes region, producing light winds through wednesday. low
pressure, 29.90 inches will move toward lower michigan thursday
bringing a slight increase in winds speeds as they become south
or southwest.


lhz362-363-240945-
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-
940 pm edt tue jun 23 2026

.rest of tonight...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon. waves 2 feet or less. 
.wednesday night...southeast winds 5 to 10 knots. a chance of
showers. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots. a chance of showers. waves
2 feet or less. 
.thursday night...northeast winds 5 to 10 knots early in the
evening becoming light and variable...then becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.friday...north winds 5 to 10 knots in the morning becoming light
and variable. 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 . a chance of showers by midnight. waves 2 feet or less.


$$

fzus63 kdtx 240139
glfsc 
expires:202606240945;;800928

lake st clair forecast
national weather service detroit/pontiac mi
939 pm edt tue jun 23 2026

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

.synopsis...high pressure, 30.20 inches, will build into the great
lakes region, producing light winds through wednesday. low
pressure, 29.90 inches will move toward lower michigan thursday
bringing a slight increase in winds speeds as they become south
or southwest.


lcz460-240945-
lake st clair-
939 pm edt tue jun 23 2026

.rest of tonight...northeast winds 5 to 10 knots by midnight
becoming light and variable. clear. waves 2 feet or less.
.wednesday...light and variable winds becoming south 5 to 10 knots
in the late morning and afternoon. sunny until late afternoon
becoming partly sunny. waves 2 feet or less.
.wednesday night...south winds 5 to 10 knots. partly cloudy becoming
mostly cloudy by midnight becoming partly cloudy. a chance of light
showers. waves 2 feet or less.
.thursday...south winds 10 to 15 knots becoming southwest 5 to 10
knots in the late morning and afternoon. partly sunny. a chance of
light showers until late afternoon. light showers likely and a
chance of thunderstorms early in the afternoon. waves 2 feet or
less.
.thursday night...northwest winds 5 to 10 knots. partly cloudy.
light showers likely and a chance of thunderstorms early in the
evening. waves 2 feet or less.
.friday...northeast winds 5 to 10 knots. partly cloudy. waves 2 feet
or less.
.saturday...northeast winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.sunday...southeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kmkx 240145
glflm 
expires:202606240915;;800998

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
845 pm cdt tue jun 23 2026

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

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

.synopsis...

high pressure around 30.2 inches over the upper midwest will 
bring continued light and variable winds throughout the rest of 
tonight. low pressure around 29.9 inches developing over the 
northern plains tonight and progressing into northern wisconsin on
wednesday will bring southwesterly winds and thunderstorms. winds
shift northwesterly as low pressure exits into lower michigan on 
thursday, with isolated thunderstorms remaining possible. light 
northerly winds expected thursday night, continuing through 
friday. friday night into saturday, expect light and variable 
winds under high pressure around 30.1 inches, before winds shift 
to become southeasterly sunday ahead of developing strong low 
pressure in the northern plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-240915-
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-
845 pm cdt tue jun 23 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northwest winds 10 to 15 kt backing to south.
waves 1 to 2 ft. 
.wednesday...south winds 10 to 15 kt increasing to 15 to 25 kt,
then diminishing to 10 to 20 kt late. chance of showers and
slight chance of thunderstorms in the morning, then showers with
a chance of thunderstorms in the afternoon. waves 1 to 2 ft
building to 2 to 4 ft. 
.wednesday night...south winds 10 to 20 kt diminishing to 10 to
15 kt late in the evening, then becoming southwest after midnight
becoming west 5 to 10 kt late. chance of showers and
thunderstorms in the evening. waves 2 to 4 ft subsiding to 1 to
3 ft. 
.thursday...west winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt becoming north.
waves 1 to 2 ft. 
.friday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 2 ft. 
.friday night...northeast winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.saturday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.sunday...southeast winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 240145
glflm 
expires:202606240915;;800997

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
845 pm cdt tue jun 23 2026

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

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

.synopsis...

high pressure around 30.2 inches over the upper midwest will 
bring continued light and variable winds throughout the rest of 
tonight. low pressure around 29.9 inches developing over the 
northern plains tonight and progressing into northern wisconsin on
wednesday will bring southwesterly winds and thunderstorms. winds
shift northwesterly as low pressure exits into lower michigan on 
thursday, with isolated thunderstorms remaining possible. light 
northerly winds expected thursday night, continuing through 
friday. friday night into saturday, expect light and variable 
winds under high pressure around 30.1 inches, before winds shift 
to become southeasterly sunday ahead of developing strong low 
pressure in the northern plains.


lmz261-362-364-366-563-565-567-868-240915-
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-
845 pm cdt tue jun 23 2026

sheboygan wi to pentwater mi north...

.rest of tonight...west winds 5 to 10 kt backing to south. waves
1 ft or less. 
.wednesday...south winds 10 to 15 kt increasing to 15 to 25 kt.
chance of showers and slight chance of thunderstorms. waves 1 to
2 ft building to 2 to 4 ft. 
.wednesday night...southeast winds 10 to 20 kt diminishing to
10 to 15 kt late in the evening, then diminishing to 5 to 10 kt
after midnight backing to northeast late. chance of showers.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt becoming north 10 to 20 kt
in the afternoon. waves 1 to 2 ft. 
.friday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.saturday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 ft or less. 
.sunday...southeast winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmqt 240201
glfls 
expires:202606240800;;801206

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 23 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... 

tonight through wednesday, expect a 29.9 inch clipper low to dig 
through the northern plains and upper midwest, before moving through 
lower michigan towards the st. lawrence seaway on thursday. as the 
clipper leaves the upper midwest, expect weak 30.0 inch ridging to 
return to lake superior on thursday, building to 30.1 inches by 
friday morning and remaining that way into saturday as a 29.5 inch 
low begins to lift off of the northern rockies. 




lsz264-240800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt tue jun 23 2026

.rest of tonight...southeast winds less than 10 knots increasing
to 5 to 15 knots after midnight. a slight chance of rain showers
after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots. a slight chance of
thunderstorms through early afternoon. a chance of showers. waves
calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing northeast
after midnight, then becoming north less than 10 knots late.
waves calm to 2 feet. 
.thursday...north winds less than 10 knots backing west by mid
afternoon. waves calm to 2 feet. 
.thursday night...west winds less than 10 knots. waves calm to
2 feet. 
.friday...west winds less than 10 knots backing east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds less than 10 knots. waves calm to
2 feet. 
.saturday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.sunday...southeast winds 15 to 25 knots. a chance of showers,
then showers likely. waves building to 3 to 6 feet occasionally
to 8 feet. 

$$

fzus63 kmqt 240201
glfls 
expires:202606240800;;801207

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 23 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... 

tonight through wednesday, expect a 29.9 inch clipper low to dig 
through the northern plains and upper midwest, before moving through 
lower michigan towards the st. lawrence seaway on thursday. as the 
clipper leaves the upper midwest, expect weak 30.0 inch ridging to 
return to lake superior on thursday, building to 30.1 inches by 
friday morning and remaining that way into saturday as a 29.5 inch 
low begins to lift off of the northern rockies. 




lsz265-240800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt tue jun 23 2026

.rest of tonight...southeast winds 5 to 15 knots increasing to
10 to 20 knots late. a slight chance of showers after midnight.
waves calm to 2 feet. 
.wednesday...southeast winds 10 to 20 knots backing east in the
afternoon. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing north late. a
slight chance of showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots. a slight chance of showers
through early afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots backing west
after midnight. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.sunday...southeast winds 20 to 30 knots. a chance of showers,
then showers likely. waves building to 3 to 6 feet occasionally
to 8 feet. 

$$

fzus63 kmqt 240201
glfls 
expires:202606240800;;801204

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 23 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... 

tonight through wednesday, expect a 29.9 inch clipper low to dig 
through the northern plains and upper midwest, before moving through 
lower michigan towards the st. lawrence seaway on thursday. as the 
clipper leaves the upper midwest, expect weak 30.0 inch ridging to 
return to lake superior on thursday, building to 30.1 inches by 
friday morning and remaining that way into saturday as a 29.5 inch 
low begins to lift off of the northern rockies. 




lsz162-240800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt tue jun 23 2026 /900 pm cdt tue jun 23 2026/

.rest of tonight...east winds 5 to 15 knots backing northeast
after midnight. a chance of rain showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms. waves building to 1 to 3 feet. 
.wednesday night...northeast winds 5 to 15 knots. a slight chance
of rain showers through midnight. waves subsiding to calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots becoming north less
than 10 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...north winds 5 to 15 knots veering northeast by mid
afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northeast winds 10 to 20 knots veering east. a chance
of rain showers. waves building to 1 to 3 feet. 
.sunday...east winds 20 to 30 knots. a chance of showers. showers
likely. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 240201
glfls 
expires:202606240800;;801209

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 23 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... 

tonight through wednesday, expect a 29.9 inch clipper low to dig 
through the northern plains and upper midwest, before moving through 
lower michigan towards the st. lawrence seaway on thursday. as the 
clipper leaves the upper midwest, expect weak 30.0 inch ridging to 
return to lake superior on thursday, building to 30.1 inches by 
friday morning and remaining that way into saturday as a 29.5 inch 
low begins to lift off of the northern rockies. 




lsz267-240800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt tue jun 23 2026

.rest of tonight...northwest winds 5 to 15 knots becoming south
less than 10 knots after midnight, then increasing to 5 to
15 knots late. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east in the
afternoon. a slight chance of rain showers by mid afternoon.
waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing northeast
late. a chance of rain showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. a chance of showers through early
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots backing west
after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots veering northwest by mid
afternoon. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering southeast.
waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 240201
glfls 
expires:202606240800;;801208

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 23 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... 

tonight through wednesday, expect a 29.9 inch clipper low to dig 
through the northern plains and upper midwest, before moving through 
lower michigan towards the st. lawrence seaway on thursday. as the 
clipper leaves the upper midwest, expect weak 30.0 inch ridging to 
return to lake superior on thursday, building to 30.1 inches by 
friday morning and remaining that way into saturday as a 29.5 inch 
low begins to lift off of the northern rockies. 




lsz266-240800-
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 tue jun 23 2026

.rest of tonight...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east in the
afternoon. a chance of rain showers. a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing north late. a
slight chance of rain showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest by mid
afternoon. a chance of rain showers through early afternoon.
waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...northwest winds 5 to 15 knots veering north by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.sunday...southeast winds 15 to 25 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 240201
glfls 
expires:202606240800;;801205

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 23 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... 

tonight through wednesday, expect a 29.9 inch clipper low to dig 
through the northern plains and upper midwest, before moving through 
lower michigan towards the st. lawrence seaway on thursday. as the 
clipper leaves the upper midwest, expect weak 30.0 inch ridging to 
return to lake superior on thursday, building to 30.1 inches by 
friday morning and remaining that way into saturday as a 29.5 inch 
low begins to lift off of the northern rockies. 




lsz263-240800-
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 tue jun 23 2026

.rest of tonight...east winds 5 to 15 knots. a chance of rain
showers. a slight chance of thunderstorms after midnight. waves
calm to 2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast late. a
chance of showers and a slight chance of thunderstorms. waves
building to 1 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of rain showers
through midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds less than 10 knots. waves calm to 2 feet.
.thursday night...west winds less than 10 knots backing southwest
after midnight. waves calm to 2 feet. 
.friday...northeast winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots. a chance of rain showers.
waves building to 1 to 3 feet. 
.sunday...east winds 15 to 25 knots veering southeast. a chance
of showers. showers likely. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$