fzus61 kbuf 250802
glflo 
expires:202606251500;;871000

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu jun 25 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 29.9 inch low over central wisconsin will move to 
southern quebec today through friday before passing across the 
canadian maritimes saturday. a 30.1 inch high will then build across 
the lower great lakes saturday, expanding to the lower great lakes 
sunday and then to the northeast monday.


loz063>065-251500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu jun 25 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 250802
glflo 
expires:202606251500;;870999

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu jun 25 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 29.9 inch low over central wisconsin will move to 
southern quebec today through friday before passing across the 
canadian maritimes saturday. a 30.1 inch high will then build across 
the lower great lakes saturday, expanding to the lower great lakes 
sunday and then to the northeast monday.


loz062-251500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu jun 25 2026

.today...south winds 10 knots or less becoming east. a chance of
showers early, then showers. showers with a chance of
thunderstorms late. waves 1 foot or less. 
.tonight...east winds 5 to 10 knots becoming west. showers likely
with a chance of thunderstorms early, then a chance of showers
late in the evening. waves 1 foot or less. 
.friday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.friday night...southwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.saturday...northeast winds less than 10 knots. waves 1 foot or
less. 
.sunday...north winds less than 10 knots becoming east. waves
1 foot or less. 
.monday...east winds 10 knots or less becoming south. a chance of
showers monday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 250754
glfle 
expires:202606251415;;870573

open lake forecast for lake erie
national weather service cleveland oh
354 am edt thu jun 25 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...
low pressure 29.90 inches will through the great lakes region 
today and extend a cold front across the lake tonight. high
pressure 30.10 inches will briefly build over the lake on friday
before another low pressure system 29.90 inches enters the ohio
valley for friday night into saturday. high pressure 30.10 inches
will build from the north starting saturday night and remain over
the eastern great lakes through monday.


lez061-169-251415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
354 am edt thu jun 25 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 250754
glfle 
expires:202606251415;;870571

open lake forecast for lake erie
national weather service cleveland oh
354 am edt thu jun 25 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...
low pressure 29.90 inches will through the great lakes region 
today and extend a cold front across the lake tonight. high
pressure 30.10 inches will briefly build over the lake on friday
before another low pressure system 29.90 inches enters the ohio
valley for friday night into saturday. high pressure 30.10 inches
will build from the north starting saturday night and remain over
the eastern great lakes through monday.


lez162>164-251415-
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-
354 am edt thu jun 25 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 250754
glfle 
expires:202606251415;;870572

open lake forecast for lake erie
national weather service cleveland oh
354 am edt thu jun 25 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...
low pressure 29.90 inches will through the great lakes region 
today and extend a cold front across the lake tonight. high
pressure 30.10 inches will briefly build over the lake on friday
before another low pressure system 29.90 inches enters the ohio
valley for friday night into saturday. high pressure 30.10 inches
will build from the north starting saturday night and remain over
the eastern great lakes through monday.


lez165>168-251415-
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-
354 am edt thu jun 25 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 250801
glfsc 
expires:202606251615;;870814

lake st clair forecast
national weather service detroit/pontiac mi
401 am edt thu jun 25 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.

low pressure, 29.80 inches will move across lower 
michigan today bringing a slight increase in winds speeds as they 
become south/southwest. high pressure, 30.10 inches, will develop
over the region throughout the weekend, bringing relatively calm 
winds and fair weather.


lcz460-251615-
lake st clair-
401 am edt thu jun 25 2026

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

$$

fzus63 kdtx 250800
glflh 
expires:202606251600;;870778

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am edt thu jun 25 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...low pressure, 29.80 inches will move across lower 
michigan today bringing a slight increase in winds speeds as they 
become south/southwest. high pressure, 30.10 inches, will develop
over the region throughout the weekend, bringing relatively calm 
winds and fair weather.


lhz462>464-251600-
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-
400 am edt thu jun 25 2026

.today...southeast winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. showers in the morning...then a chance
of showers and thunderstorms in the afternoon. waves 1 to 3 feet.
.tonight...north winds 5 to 10 knots. 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...light and variable winds. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots. waves 2 feet or less. 
.sunday...light and variable winds becoming north 5 to 10 knots
early in the evening...then veering to the east by midnight.
waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 250800
glflh 
expires:202606251600;;870777

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am edt thu jun 25 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...low pressure, 29.80 inches will move across lower 
michigan today bringing a slight increase in winds speeds as they 
become south/southwest. high pressure, 30.10 inches, will develop
over the region throughout the weekend, bringing relatively calm 
winds and fair weather.


lhz362-363-251600-
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-
400 am edt thu jun 25 2026

.today...east winds 5 to 10 knots increasing to 10 to 15 knots
late in the morning...then becoming southeast 5 to 10 knots early
in the afternoon backing to the east late in the afternoon.
showers likely in the morning...then a chance of showers and
thunderstorms in the afternoon. waves 1 to 3 feet. 
.tonight...north winds 5 to 10 knots backing to the northwest
early in the morning. waves 2 feet or less. 
.friday...north winds 5 to 10 knots until late afternoon 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. waves 2 feet or less. 
.sunday...light and variable winds becoming east 5 to 10 knots .
waves 2 feet or less. 
.monday...southeast winds 10 to 15 knots. a chance of showers
until afternoon. waves 1 to 3 feet building to 2 to 4 feet. 


$$

fzus63 kdtx 250800
glflh 
expires:202606251600;;870776

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am edt thu jun 25 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...low pressure, 29.80 inches will move across lower 
michigan today bringing a slight increase in winds speeds as they 
become south/southwest. high pressure, 30.10 inches, will develop
over the region throughout the weekend, bringing relatively calm 
winds and fair weather.


lhz361-251600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
400 am edt thu jun 25 2026

.today...east winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon...then decreasing to 5 to 10 knots late in
the afternoon. a chance of showers. waves 2 feet or less. 
.tonight...light and variable winds becoming north 5 to 10 knots
after midnight. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots until late afternoon
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. waves 2 feet or less. 
.sunday...light and variable winds becoming east 10 to 15 knots.
a chance of. waves 2 feet or less building to 3 to 5 feet . 
.monday...southeast winds 10 to 15 knots increasing to 15 to
20 knots early in the evening...then decreasing to 10 to 15 knots
by midnight. a chance of showers until afternoon. waves 2 to
4 feet. 


$$

fzus63 kmkx 250746
glflm 
expires:202606251530;;870457

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
246 am cdt thu jun 25 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...

weak low pressure around 29.8 inches over northeast wisconsin will
slide into northern lower michigan by late this morning, with
relatively light and variable winds underneath it. early this 
morning, patchy fog will be possible across the lake, with showers
and thunderstorms over the northern third of the lake. storm exit
east later this morning, with only slight chances for some stray 
showers and thunderstorms later today near the northern and 
western shorelines of the lake. 

high pressure around 30.1 inches over ontario and the western 
great lakes will dominate friday through saturday with light north
to northeast winds likely. sunday, low pressure deepens to 29.4 
inches over the central plains, bringing breezy southeasterly 
winds to the lake. winds turn southerly and strengthen into monday
as low pressure exits into the canadian prairies. on and off 
thunderstorms become more likely during this time.


lmz261-362-364-366-563-565-567-868-251530-
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-
246 am cdt thu jun 25 2026

sheboygan wi to pentwater mi north...

.today...northeast winds 10 to 15 kt becoming north. patchy fog
this morning. chance of showers and slight chance of
thunderstorms this morning. waves 1 to 3 ft. 
.tonight...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 1 to 3 ft subsiding to 1 ft or less. 
.friday...northeast winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.friday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt overnight. waves 1 to 2 ft. 
.saturday...northeast winds 5 to 10 kt increasing to 10 to 20 kt
in the afternoon. waves 1 to 2 ft. 
.saturday night...northeast winds 10 to 20 kt becoming southeast.
waves 1 to 2 ft. 
.sunday...southeast winds 15 to 25 kt. waves 2 to 4 ft building
to 3 to 5 ft. 
.monday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 250746
glflm 
expires:202606251530;;870458

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
246 am cdt thu jun 25 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...

weak low pressure around 29.8 inches over northeast wisconsin will
slide into northern lower michigan by late this morning, with
relatively light and variable winds underneath it. early this 
morning, patchy fog will be possible across the lake, with showers
and thunderstorms over the northern third of the lake. storm exit
east later this morning, with only slight chances for some stray 
showers and thunderstorms later today near the northern and 
western shorelines of the lake. 

high pressure around 30.1 inches over ontario and the western 
great lakes will dominate friday through saturday with light north
to northeast winds likely. sunday, low pressure deepens to 29.4 
inches over the central plains, bringing breezy southeasterly 
winds to the lake. winds turn southerly and strengthen into monday
as low pressure exits into the canadian prairies. on and off 
thunderstorms become more likely during this time.


lmz080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
246 am cdt thu jun 25 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 15 kt veering to north. patchy fog this
morning. waves 1 to 2 ft. 
.tonight...north winds 10 to 15 kt becoming northeast 5 to 10 kt.
patchy dense fog overnight. waves 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt becoming north 10 to 20 kt.
patchy dense fog in the morning. waves 1 to 2 ft. 
.friday night...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 2 ft. 
.saturday...east winds 10 to 15 kt becoming northeast. waves 1 to
2 ft. 
.saturday night...northeast winds 10 to 15 kt becoming southeast
10 to 20 kt. waves 1 to 3 ft. 
.sunday...southeast winds 15 to 25 kt. waves 3 to 5 ft. 
.monday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 250801
glfls 
expires:202606252000;;870798

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 25 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 low currently tracking through lower michigan today 
continues towards the st. lawrence seaway tonight into friday. as it 
leaves the upper midwest, expect weak 30.0 inch ridging to return to 
lake superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz266-252000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt thu jun 25 2026

.early this morning...northeast winds 5 to 15 knots. patchy fog.
a slight chance of rain showers. waves calm to 2 feet. 
.today...north winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing northwest late. patchy fog through
early afternoon. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing west late. waves
calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east in the afternoon,
then backing north late. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 15 to 25 knots. a chance of showers.
waves building to 3 to 6 feet occasionally to 8 feet. 
.monday...southeast winds 20 to 30 knots becoming south 15 to
25 knots. a chance of showers. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202606252000;;870797

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 25 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 low currently tracking through lower michigan today 
continues towards the st. lawrence seaway tonight into friday. as it 
leaves the upper midwest, expect weak 30.0 inch ridging to return to 
lake superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz265-252000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt thu jun 25 2026

.early this morning...northeast winds 5 to 15 knots. patchy fog.
a slight chance of showers. waves calm to 2 feet. 
.today...north winds 5 to 15 knots. patchy fog through early
afternoon. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east in the afternoon.
waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...east winds 20 to 30 knots becoming southeast 15 to
25 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...southeast winds 15 to 25 knots veering south. a chance
of showers. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202606252000;;870796

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 25 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 low currently tracking through lower michigan today 
continues towards the st. lawrence seaway tonight into friday. as it 
leaves the upper midwest, expect weak 30.0 inch ridging to return to 
lake superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz264-252000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt thu jun 25 2026

.early this morning...north winds less than 10 knots. patchy fog.
waves calm to 2 feet. 
.today...north winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming west 5 to 15 knots late.
patchy dense fog. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.friday...west winds less than 10 knots backing south in the
afternoon, then backing southeast late. 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. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 15 to 25 knots veering southeast. a chance
of showers. waves building to 3 to 6 feet occasionally to 8 feet.
.monday...southeast winds 15 to 25 knots becoming south 10 to
20 knots. a chance of showers and thunderstorms. waves subsiding
to 2 to 4 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202606252000;;870795

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 25 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 low currently tracking through lower michigan today 
continues towards the st. lawrence seaway tonight into friday. as it 
leaves the upper midwest, expect weak 30.0 inch ridging to return to 
lake superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz263-252000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt thu jun 25 2026

.early this morning...northeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots becoming north less than
10 knots in the afternoon, then backing west late. patchy dense
fog through early afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots becoming southwest less than
10 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds less than 10 knots becoming northeast
5 to 15 knots in the 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 becoming northeast 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.sunday...east winds 15 to 25 knots veering southeast. a chance
of showers. waves building to 3 to 6 feet occasionally to 8 feet.
.monday...southeast winds 10 to 20 knots veering south. a chance
of showers and thunderstorms. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202606252000;;870794

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 25 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 low currently tracking through lower michigan today 
continues towards the st. lawrence seaway tonight into friday. as it 
leaves the upper midwest, expect weak 30.0 inch ridging to return to 
lake superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz162-252000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu jun 25 2026 /300 am cdt thu jun 25 2026/

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

$$

fzus63 kmqt 250801
glfls 
expires:202606252000;;870799

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 25 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 low currently tracking through lower michigan today 
continues towards the st. lawrence seaway tonight into friday. as it 
leaves the upper midwest, expect weak 30.0 inch ridging to return to 
lake superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz267-252000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt thu jun 25 2026

.early this morning...northeast winds 5 to 15 knots. patchy fog.
a chance of rain showers. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots backing north in the
afternoon, then increasing to 10 to 20 knots late. patchy fog
through early afternoon. a chance of showers. a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots becoming southeast 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...southeast winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 

$$