fzus61 kbuf 030802
glflo 
expires:202610031500;;453173

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat oct 3 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.3 inch high will build east across the lower great 
lakes region through saturday, before sliding northeast into 
northern new england saturday night. a 29.7 inch low over 
northwestern ontario sunday will deepen to 29.4 inches as it slides 
just south of james bay into central quebec sunday night, while 
sending a pair of cold fronts across the lake. a 30.2 inch high over 
the upper midwest will then build across the great lakes region 
monday into tuesday, before sliding into the northeast wednesday.


loz063>065-031500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat oct 3 2026

.today...northeast winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 
.tonight...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 15 to 20 knots becoming south. waves
1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.sunday night...south winds 15 to 20 knots becoming west. a
chance of showers overnight. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...northwest winds to 30 knots diminishing to 15 to
20 knots. a chance of showers during the day. waves 4 to 7 feet
building to 6 to 9 feet, then subsiding to 4 to 7 feet. waves
occasionally around 11 feet. 
.tuesday...northwest winds 5 to 15 knots becoming southwest.
waves 2 to 4 feet subsiding to 2 feet or less. 
.wednesday...south winds 15 to 20 knots becoming southwest. waves
1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kbuf 030802
glflo 
expires:202610031500;;453172

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat oct 3 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.3 inch high will build east across the lower great 
lakes region through saturday, before sliding northeast into 
northern new england saturday night. a 29.7 inch low over 
northwestern ontario sunday will deepen to 29.4 inches as it slides 
just south of james bay into central quebec sunday night, while 
sending a pair of cold fronts across the lake. a 30.2 inch high over 
the upper midwest will then build across the great lakes region 
monday into tuesday, before sliding into the northeast wednesday.


loz062-031500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat oct 3 2026

.today...northeast winds 5 to 10 knots becoming east. waves 1 to
2 feet. 
.tonight...east winds 10 to 15 knots becoming southeast. waves
2 feet or less. 
.sunday...southeast winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.sunday night...southwest winds 5 to 15 knots becoming northwest
15 to 20 knots. waves 2 feet or less building to 3 to 5 feet. 
.monday...west winds 15 to 25 knots becoming northwest. waves
3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
5 feet. waves occasionally around 9 feet. 
.tuesday...northwest winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.wednesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 

$$

fzus61 kcle 030740
glfle 
expires:202610031415;;452639

open lake forecast for lake erie
national weather service cleveland oh
340 am edt sat oct 3 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 30.40 inches will move east across the area today
before a weak cold front crosses the lake sunday into sunday
evening. high pressure 30.30 inches will build over the great
lakes monday through the middle of next week.


lez164>166-031415-
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-
340 am edt sat oct 3 2026

.today...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming southeast.
waves 1 to 2 feet. 
.sunday...south winds 5 to 10 knots becoming west. waves 2 feet
or less. 
.sunday night...west winds 5 to 10 knots becoming northwest and
increasing to 15 to 20 knots. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...northwest winds 15 to 20 knots becoming north 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 knots or less becoming south and
increasing to 15 to 20 knots. waves 2 feet or less. 
.wednesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kcle 030740
glfle 
expires:202610031415;;452640

open lake forecast for lake erie
national weather service cleveland oh
340 am edt sat oct 3 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 30.40 inches will move east across the area today
before a weak cold front crosses the lake sunday into sunday
evening. high pressure 30.30 inches will build over the great
lakes monday through the middle of next week.


lez061-167>169-031415-
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-
340 am edt sat oct 3 2026

.today...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming west. waves 1 to
2 feet. 
.sunday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 knots or less becoming south and
increasing to 15 to 20 knots. waves 2 feet or less. 
.wednesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kcle 030740
glfle 
expires:202610031415;;452638

open lake forecast for lake erie
national weather service cleveland oh
340 am edt sat oct 3 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 30.40 inches will move east across the area today
before a weak cold front crosses the lake sunday into sunday
evening. high pressure 30.30 inches will build over the great
lakes monday through the middle of next week.


lez162-163-031415-
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-
340 am edt sat oct 3 2026

.today...northeast winds 10 to 15 knots becoming east. waves
2 feet or less. 
.tonight...east winds 10 knots or less becoming south. waves
2 feet or less. 
.sunday...southwest winds less than 10 knots becoming west. waves
1 foot or less. 
.sunday night...west winds 5 to 10 knots becoming northwest and
increasing to 15 to 20 knots. waves 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming north. waves
1 to 3 feet subsiding to 1 foot or less. 
.tuesday...north winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 

$$

fzus63 kdtx 030740
glfsc 
expires:202610031545;;452645

lake st clair forecast
national weather service detroit/pontiac mi
340 am edt sat oct 3 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, 30.30 inches, will pass across lake
huron and southern ontario today. this high will quickly exit 
east of the region saturday night. a low pressure system tracking 
across northern ontario into northern quebec will then drive a 
cold front across the region on sunday.


lcz460-031545-
lake st clair-
340 am edt sat oct 3 2026

.today...northeast winds 5 to 10 knots until late afternoon becoming
light and variable. mostly sunny. waves 2 feet or less.
.tonight...east winds 5 to 10 knots. mostly clear. waves 2 feet or
less.
.sunday...light and variable winds becoming southwest 5 to 10 knots
early in the afternoon. mostly sunny. waves 2 feet or less.
.sunday night...west winds 10 to 15 knots becoming northwest 15 to
20 knots in the late evening and overnight. mostly clear. waves 2
feet or less.
.monday...northwest winds 10 to 15 knots. clear. waves 2 feet or
less.
.tuesday...south winds 10 to 15 knots. clear. waves 2 feet or less.
.wednesday...southwest winds 10 to 15 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 030740
glflh 
expires:202610031545;;452642

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt sat oct 3 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, 30.30 inches, will pass across lake
huron and southern ontario today. this high will quickly exit 
east of the region saturday night. a low pressure system tracking 
across northern ontario into northern quebec will then drive a 
cold front across the region on sunday.


lhz361>363-031545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
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-
340 am edt sat oct 3 2026

.today...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 1 to 3 feet. 
.tonight...southeast winds 5 to 10 knots becoming south 10 to
15 knots after midnight. a chance of showers after midnight.
waves 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots. gusts to 30 knots in
the late morning and afternoon. a chance of showers. waves 3 to
5 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots. waves 6 to 9 feet. waves occasionally around
12 feet. 
.monday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 5 to 10 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.tuesday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then increasing to
10 to 15 knots early in the evening increasing to 15 to 20 knots
with gusts to around 30 knots by midnight. waves 1 to 3 feet
building to 3 to 5 feet by midnight. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
early afternoon...then decreasing to 10 to 15 knots early in the
evening becoming west 5 to 10 knots by midnight. waves 3 to
5 feet. 


$$

fzus63 kdtx 030740
glflh 
expires:202610031545;;452643

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt sat oct 3 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, 30.30 inches, will pass across lake
huron and southern ontario today. this high will quickly exit 
east of the region saturday night. a low pressure system tracking 
across northern ontario into northern quebec will then drive a 
cold front across the region on sunday.


lhz462>464-031545-
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-
340 am edt sat oct 3 2026

.today...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 to 4 feet subsiding to 1 to 3 feet in
the late morning and afternoon. 
.tonight...light and variable winds becoming southeast 5 to
10 knots late in the evening...then increasing to 10 to 15 knots
after midnight decreasing to 5 to 10 knots early in the morning.
waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots veering to the southwest
in the late morning and early afternoon...then increasing to
10 to 15 knots early in the afternoon. waves 1 to 3 feet. 
.sunday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots in the late evening and overnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
early in the evening increasing to 15 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet until early evening...then
building to 2 to 4 feet by midnight. 
.wednesday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots . waves 2 to 4 feet. 


$$

fzus63 kmkx 030800
glflm 
expires:202610031515;;453056

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 3 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...

30.3 inch high pressure over michigan has brought light and 
variable winds to northern and central lake michigan with 
easterly winds over the south. winds will then trend south-
southwesterly this evening as 29.8 inch low pressure moves toward
the hudson bay from the canadian prairies. the low will pull a 
cold front across the waters tonight into sunday, bringing a 
west- northwest wind shift. showers could accompany the passing 
front, particularly across the northern half of the waters. 
northwest winds will continue through the day monday, tapering 
monday night as 30.2 inch high pressure moves in from the northern
great plains. 

a deeper area of 29.4 inch low pressure will build toward the 
hudson bay tuesday through thursday. south-southwest winds will 
increase in advance of the approaching low tuesday afternoon 
through wednesday, becoming gusty at times. a few gusts could 
approach gale-force, particularly over the northern half of the 
open waters. will be monitoring for possible headlines as this 
portion of the period draws closer. the low will pull a cold front
across the waters wednesday night into thursday, bringing a west-
northwest wind shift and scattered rain showers. best potential 
for rain is currently favored over the northern third of the open 
waters. generally westerly winds will continue through friday as 
30.1 inch high pressure moves near or just south of lake 
michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-031515-
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-
300 am cdt sat oct 3 2026

sheboygan wi to pentwater mi south...

.today...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 2 to 4 ft. 
.tonight...southeast winds 10 to 20 kt becoming southwest 15 to
25 kt. slight chance of showers overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...southwest winds 15 to 25 kt veering to northwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.sunday night...northwest winds 10 to 20 kt becoming north. waves
3 to 5 ft. 
.monday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.monday night...northeast winds 10 to 15 kt veering to southeast.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. 
.wednesday...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 030800
glflm 
expires:202610031515;;453055

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 3 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...

30.3 inch high pressure over michigan has brought light and 
variable winds to northern and central lake michigan with 
easterly winds over the south. winds will then trend south-
southwesterly this evening as 29.8 inch low pressure moves toward
the hudson bay from the canadian prairies. the low will pull a 
cold front across the waters tonight into sunday, bringing a 
west- northwest wind shift. showers could accompany the passing 
front, particularly across the northern half of the waters. 
northwest winds will continue through the day monday, tapering 
monday night as 30.2 inch high pressure moves in from the northern
great plains. 

a deeper area of 29.4 inch low pressure will build toward the 
hudson bay tuesday through thursday. south-southwest winds will 
increase in advance of the approaching low tuesday afternoon 
through wednesday, becoming gusty at times. a few gusts could 
approach gale-force, particularly over the northern half of the 
open waters. will be monitoring for possible headlines as this 
portion of the period draws closer. the low will pull a cold front
across the waters wednesday night into thursday, bringing a west-
northwest wind shift and scattered rain showers. best potential 
for rain is currently favored over the northern third of the open 
waters. generally westerly winds will continue through friday as 
30.1 inch high pressure moves near or just south of lake 
michigan.


lmz261-362-364-366-563-565-567-868-031515-
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-
300 am cdt sat oct 3 2026

sheboygan wi to pentwater mi north...

.today...southeast winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.tonight...south winds 10 to 20 kt increasing to 30 kt late in
the evening, then becoming south to 30 kt after midnight becoming
southwest late. chance of showers. waves 3 to 5 ft building to
5 to 8 ft occasionally to 10 ft. 
.sunday...west winds to 30 kt becoming northwest 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday night...northwest winds to 30 kt. waves 3 to 5 ft. 
.monday...northwest winds 15 to 25 kt. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.monday night...north winds 10 to 20 kt backing to south 10 to
15 kt. waves 1 to 3 ft. 
.tuesday...south winds 15 to 25 kt increasing to gales to 35 kt.
waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. 
.wednesday...west winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmqt 030802
glfls 
expires:202610032000;;453165

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat oct 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

high pressure of 30.3 inches over the mackinac straits this morning 
shifts east to the mouth of the st. lawrence river by this evening. 
in response, a 29.8 inch clipper moving through the canadian 
prairies this morning skirts along lake superior's north shore 
tonight. behind the clipper, 30.3 inch high pressure quickly returns 
to the northern plains on sunday and moves overhead on monday. 
behind this high pressure ridging, another 29.7 inch clipper low 
moves east over the canadian prairies before passing to the north of 
lake superior at 29.6 inches late tuesday and tuesday night. remnant 
troughing of 29.8 inches remains over lake superior until thursday 
morning.




lsz162-032000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat oct 3 2026 /301 am cdt sat oct 3 2026/

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots increasing to 15 to 25 knots.
a slight chance of showers through early afternoon, then rain
likely by mid afternoon. waves building to 1 to 3 feet. 
.tonight...south winds 15 to 25 knots veering west after
midnight, then becoming northwest 20 to 30 knots late. a chance
of rain through midnight. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots backing west in the
afternoon, then veering northwest late. a slight chance of
showers by mid afternoon. waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.monday...northwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.wednesday...west winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 030802
glfls 
expires:202610032000;;453166

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat oct 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

high pressure of 30.3 inches over the mackinac straits this morning 
shifts east to the mouth of the st. lawrence river by this evening. 
in response, a 29.8 inch clipper moving through the canadian 
prairies this morning skirts along lake superior's north shore 
tonight. behind the clipper, 30.3 inch high pressure quickly returns 
to the northern plains on sunday and moves overhead on monday. 
behind this high pressure ridging, another 29.7 inch clipper low 
moves east over the canadian prairies before passing to the north of 
lake superior at 29.6 inches late tuesday and tuesday night. remnant 
troughing of 29.8 inches remains over lake superior until thursday 
morning.




lsz263-032000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt sat oct 3 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming southeast 15 to 25 knots late. a
chance of showers. waves building to 2 to 4 feet. 
.tonight...south winds 20 to 30 knots becoming southwest 15 to
25 knots after midnight, then veering west late. rain likely
through midnight, then a slight chance of showers after midnight.
waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots backing west in the
afternoon, then diminishing to 15 to 25 knots late. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.tuesday...south winds 20 to 30 knots becoming west 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday...west winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 

$$

fzus63 kmqt 030802
glfls 
expires:202610032000;;453167

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat oct 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

high pressure of 30.3 inches over the mackinac straits this morning 
shifts east to the mouth of the st. lawrence river by this evening. 
in response, a 29.8 inch clipper moving through the canadian 
prairies this morning skirts along lake superior's north shore 
tonight. behind the clipper, 30.3 inch high pressure quickly returns 
to the northern plains on sunday and moves overhead on monday. 
behind this high pressure ridging, another 29.7 inch clipper low 
moves east over the canadian prairies before passing to the north of 
lake superior at 29.6 inches late tuesday and tuesday night. remnant 
troughing of 29.8 inches remains over lake superior until thursday 
morning.




lsz264-032000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sat oct 3 2026

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 5 to 15 knots becoming southeast 10 to
20 knots late. a chance of showers. waves building to 1 to
3 feet. 
.tonight...south winds 15 to 25 knots becoming west 20 to
30 knots late. rain likely through midnight, then a chance of
showers after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves 3 to 6 feet occasionally to
8 feet. 
.monday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots veering west. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.wednesday...west winds 20 to 30 knots diminishing to 15 to
25 knots. waves 2 to 4 feet. 

$$

fzus63 kmqt 030802
glfls 
expires:202610032000;;453168

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat oct 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

high pressure of 30.3 inches over the mackinac straits this morning 
shifts east to the mouth of the st. lawrence river by this evening. 
in response, a 29.8 inch clipper moving through the canadian 
prairies this morning skirts along lake superior's north shore 
tonight. behind the clipper, 30.3 inch high pressure quickly returns 
to the northern plains on sunday and moves overhead on monday. 
behind this high pressure ridging, another 29.7 inch clipper low 
moves east over the canadian prairies before passing to the north of 
lake superior at 29.6 inches late tuesday and tuesday night. remnant 
troughing of 29.8 inches remains over lake superior until thursday 
morning.




lsz265-032000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sat oct 3 2026

...gale watch in effect from sunday morning through sunday
evening...

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 10 to 20 knots becoming southeast 15 to
25 knots late. a chance of rain by mid afternoon. waves building
to 1 to 3 feet. 
.tonight...south winds 20 to 30 knots increasing to gales to
35 knots after midnight, then veering west late. rain likely
through midnight, then a chance of showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest gales to 40 knots becoming west gales to
35 knots late. waves building to 5 to 9 feet occasionally to
11 feet. 
.sunday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 4 to 8 feet
occasionally to 10 feet. 
.monday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.tuesday...south winds 20 to 30 knots veering west. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet. 
.wednesday...west gales to 35 knots diminishing to 20 to
30 knots. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 

$$

fzus63 kmqt 030802
glfls 
expires:202610032000;;453169

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat oct 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

high pressure of 30.3 inches over the mackinac straits this morning 
shifts east to the mouth of the st. lawrence river by this evening. 
in response, a 29.8 inch clipper moving through the canadian 
prairies this morning skirts along lake superior's north shore 
tonight. behind the clipper, 30.3 inch high pressure quickly returns 
to the northern plains on sunday and moves overhead on monday. 
behind this high pressure ridging, another 29.7 inch clipper low 
moves east over the canadian prairies before passing to the north of 
lake superior at 29.6 inches late tuesday and tuesday night. remnant 
troughing of 29.8 inches remains over lake superior until thursday 
morning.




lsz266-032000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt sat oct 3 2026

...gale watch in effect from sunday morning through sunday
evening...

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 10 to 20 knots becoming southeast 15 to
25 knots late. a chance of showers. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.tonight...south winds 20 to 30 knots increasing to gales to
35 knots after midnight, then becoming southwest 20 to 30 knots
late. rain. waves building to 4 to 8 feet occasionally to
10 feet. 
.sunday...northwest gales to 35 knots. a slight chance of showers
through early afternoon. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.sunday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. a slight chance of showers through
midnight. waves subsiding to 6 to 9 feet occasionally to 11 feet.
.monday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.monday night...northwest winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.tuesday...south winds 20 to 30 knots becoming southwest gales to
35 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 030802
glfls 
expires:202610032000;;453170

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat oct 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

high pressure of 30.3 inches over the mackinac straits this morning 
shifts east to the mouth of the st. lawrence river by this evening. 
in response, a 29.8 inch clipper moving through the canadian 
prairies this morning skirts along lake superior's north shore 
tonight. behind the clipper, 30.3 inch high pressure quickly returns 
to the northern plains on sunday and moves overhead on monday. 
behind this high pressure ridging, another 29.7 inch clipper low 
moves east over the canadian prairies before passing to the north of 
lake superior at 29.6 inches late tuesday and tuesday night. remnant 
troughing of 29.8 inches remains over lake superior until thursday 
morning.




lsz267-032000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sat oct 3 2026

...gale watch in effect from sunday morning through sunday
evening...

.early this morning...southwest winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...south winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing southeast late. a chance of rain
by mid afternoon. waves building to 1 to 3 feet. 
.tonight...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight, then veering southwest late. rain. waves
building to 4 to 7 feet occasionally to 9 feet. 
.sunday...west gales to 35 knots becoming northwest gales to
40 knots in the afternoon. a chance of showers through early
afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 9 to 12 feet occasionally to 15 feet. 
.sunday night...northwest gales to 35 knots. a chance of showers
through midnight. waves subsiding to 7 to 10 feet occasionally to
13 feet, then building to 8 to 11 feet occasionally to 14 feet. 
.monday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.monday night...northwest winds 5 to 15 knots backing south after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...south winds 20 to 30 knots veering southwest. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.wednesday...west winds 15 to 25 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$