fzus61 kbuf 111411
glflo 
expires:202604112100;;192639

open lake forecast for lake ontario
national weather service buffalo ny
1010 am edt sat apr 11 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 30.5 inch high over the central great lakes this 
morning will build east over the lower great lakes this afternoon 
and tonight, then drift east to new england sunday and off the coast 
sunday night. a 29.4 inch low will then move northeastward from the 
upper midwest sunday to near james bay sunday night, while pushing 
an attendant warm front across the lake on sunday. this low will 
strengthen to 29.2 inches while continuing to trek northeast into 
northern quebec monday, with a trailing cold front stalling near the 
lake monday through tuesday. a 29.5 inch surface low advancing 
through the upper great lakes wednesday will lift this frontal 
boundary northward into canada. this 29.5 inch low will continue 
northeast into central quebec on thursday while dragging an 
attendant cold front across the lake. a 30.2 inch high will then 
build over the lower great lakes thursday night and friday.


loz062-112100-
lake ontario open waters from the niagara river to hamlin beach-
1010 am edt sat apr 11 2026

.this afternoon...northwest winds 5 to 15 knots becoming
southwest. waves 2 feet or less. 
.tonight...southwest winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming east. a chance
of rain showers in the morning, then rain showers in the
afternoon. waves 2 feet or less. 
.sunday night...east winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. showers in the evening, then a
chance of showers overnight. waves 1 to 2 feet building to 3 to
6 feet. 
.monday...southwest winds 15 to 25 knots diminishing to 5 to
10 knots. showers during the day, then a chance of showers monday
night. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots. showers likely with
a chance of thunderstorms. waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 111411
glflo 
expires:202604112100;;192640

open lake forecast for lake ontario
national weather service buffalo ny
1010 am edt sat apr 11 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 30.5 inch high over the central great lakes this 
morning will build east over the lower great lakes this afternoon 
and tonight, then drift east to new england sunday and off the coast 
sunday night. a 29.4 inch low will then move northeastward from the 
upper midwest sunday to near james bay sunday night, while pushing 
an attendant warm front across the lake on sunday. this low will 
strengthen to 29.2 inches while continuing to trek northeast into 
northern quebec monday, with a trailing cold front stalling near the 
lake monday through tuesday. a 29.5 inch surface low advancing 
through the upper great lakes wednesday will lift this frontal 
boundary northward into canada. this 29.5 inch low will continue 
northeast into central quebec on thursday while dragging an 
attendant cold front across the lake. a 30.2 inch high will then 
build over the lower great lakes thursday night and friday.


loz063>065-112100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1010 am edt sat apr 11 2026

.this afternoon...northwest winds 10 to 15 knots becoming west.
waves 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming south less than
10 knots. waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming southeast. a chance
of rain showers in the morning, then rain showers likely in the
afternoon. waves 2 feet or less. 
.sunday night...southeast winds 15 to 25 knots becoming south.
showers likely. waves 2 to 4 feet building to 3 to 6 feet. 
.monday...southwest winds 15 to 25 knots becoming west and
diminishing to 5 to 10 knots. showers. waves 3 to 6 feet building
to 4 to 7 feet, then subsiding to 2 to 4 feet. waves occasionally
around 9 feet. 
.tuesday...southeast winds 5 to 15 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 to 3 feet.
.wednesday...southwest winds 15 to 20 knots. showers likely.
waves 1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 111352
glfle 
expires:202604112030;;191533

open lake forecast for lake erie
national weather service cleveland oh
952 am edt sat apr 11 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 30.50 inches over the central great lakes today will 
shift east tonight. this will allow a warm front to lift across 
the lake sunday afternoon with a cold front approaching lake erie 
from the northwest on monday. the cold front will stall to the 
north of lake erie tuesday and wednesday.


lez164>167-112030-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
952 am edt sat apr 11 2026

.this afternoon...north winds 10 knots or less becoming east.
waves 1 foot or less. 
.tonight...southeast winds 10 knots or less. waves 1 foot or
less. 
.sunday...southeast winds 5 to 15 knots becoming south. waves
2 feet or less. 
.sunday night...south winds 15 to 20 knots becoming southwest. a
chance of showers overnight. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
and thunderstorms monday night. waves 3 to 6 feet subsiding to
1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms. waves 2 to
4 feet building to 3 to 5 feet. 
.wednesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
wednesday night. waves 3 to 5 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 111352
glfle 
expires:202604112030;;191534

open lake forecast for lake erie
national weather service cleveland oh
952 am edt sat apr 11 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 30.50 inches over the central great lakes today will 
shift east tonight. this will allow a warm front to lift across 
the lake sunday afternoon with a cold front approaching lake erie 
from the northwest on monday. the cold front will stall to the 
north of lake erie tuesday and wednesday.


lez061-168-169-112030-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
952 am edt sat apr 11 2026

.this afternoon...northwest winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.tonight...southwest winds less than 10 knots. waves 1 foot or
less. 
.sunday...east winds 5 to 15 knots becoming southeast. a chance
of rain showers. waves 2 feet or less. 
.sunday night...south winds 15 to 20 knots becoming southwest. a
chance of showers overnight. waves 1 to 3 feet building to 2 to
4 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 5 to
15 knots. showers likely during the day, then a chance of showers
monday night. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms during the day, then showers likely with a
chance of thunderstorms tuesday night. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots. showers likely
during the day, then a chance of showers wednesday night. waves
2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 111352
glfle 
expires:202604112030;;191532

open lake forecast for lake erie
national weather service cleveland oh
952 am edt sat apr 11 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 30.50 inches over the central great lakes today will 
shift east tonight. this will allow a warm front to lift across 
the lake sunday afternoon with a cold front approaching lake erie 
from the northwest on monday. the cold front will stall to the 
north of lake erie tuesday and wednesday.


lez162-163-112030-
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-
952 am edt sat apr 11 2026

.this afternoon...northeast winds 5 to 10 knots becoming
southeast. waves 1 foot or less. 
.tonight...southeast winds 5 to 15 knots. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming south. a chance
of showers in the morning. waves 1 to 2 feet. 
.sunday night...southwest winds 15 to 20 knots. a chance of
showers overnight. waves 1 to 3 feet building to 2 to 4 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day, then a chance of
showers and thunderstorms monday night. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers during the day, then a chance of
showers and thunderstorms tuesday night. waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
wednesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 111338
glflh 
expires:202604112200;;191077

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 am edt sat apr 11 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, 30.50 inches, centers over the region
today. active weather returns sunday morning, with intervals of
showers, thunderstorms, and potential for gusty winds through
wednesday due to several passing disturbances.


lhz361-362-112200-
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-
938 am edt sat apr 11 2026

.rest of today...light and variable winds becoming south 5 to
10 knots early in the afternoon...then backing to the southeast
late in the afternoon. waves 2 feet or less. 
.tonight...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. rain and snow showers
after midnight. waves 1 to 3 feet. 
.sunday...southeast winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then
decreasing to 15 to 20 knots early in the afternoon. showers in
the morning...then showers likely in the afternoon. waves 4 to
6 feet building to 6 to 9 feet early in the afternoon. waves
occasionally around 12 feet. 
.sunday night...south winds 15 to 20 knots veering to the
southwest after midnight. showers. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.monday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then becoming west 5 to 10 knots
late in the afternoon veering to the northeast late in the
evening. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
evening. waves occasionally around 8 feet. 
.tuesday...east winds 10 to 15 knots. showers likely. a chance of
thunderstorms early in the evening. waves 3 to 5 feet. 
.wednesday...southeast winds 15 to 20 knots becoming west 10 to
15 knots. showers likely early in the morning...then a chance of 
showers. waves 3 to 5 feet. 


$$

fzus63 kdtx 111338
glflh 
expires:202604112200;;191078

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 am edt sat apr 11 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, 30.50 inches, centers over the region
today. active weather returns sunday morning, with intervals of
showers, thunderstorms, and potential for gusty winds through
wednesday due to several passing disturbances.


lhz363-462>464-112200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
938 am edt sat apr 11 2026

.rest of today...north winds 5 to 10 knots late in the morning
becoming light and variable. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots veering to the southeast
late in the evening...then increasing to 10 to 15 knots after
midnight. a chance of showers after midnight. waves 1 to 3 feet. 
.sunday...southeast winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. showers likely in the
morning...then a chance of showers in the afternoon. waves 2 to
4 feet building to 5 to 7 feet in the late morning and afternoon.
waves occasionally around 10 feet. 
.sunday night...south winds 15 to 20 knots. a chance of showers
in the evening...then showers after midnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.monday...southwest winds 15 to 20 knots becoming west 5 to
10 knots late in the afternoon...then veering to the east late in
the evening. a chance of showers. waves 4 to 6 feet subsiding to
1 to 3 feet late in the evening. waves occasionally around
8 feet. 
.tuesday...south winds 10 to 15 knots. showers likely...then
showers likely and a chance of thunderstorms by midnight. waves
1 to 3 feet building to 3 to 5 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely early in the morning...then a chance of 
showers. waves 3 to 5 feet. 


$$

fzus63 kdtx 111338
glfsc 
expires:202604112200;;191080

lake st clair forecast
national weather service detroit/pontiac mi
938 am edt sat apr 11 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, 30.50 inches, centers over the region
today. active weather returns sunday morning, with intervals of
showers, thunderstorms, and potential for gusty winds through
wednesday due to several passing disturbances.


lcz460-112200-
lake st clair-
938 am edt sat apr 11 2026

.rest of today...light and variable winds. sunny. waves 2 feet or
less.
.tonight...southeast winds 5 to 10 knots. clear becoming partly
cloudy by midnight becoming mostly cloudy. a chance of light showers
early in the morning. waves 2 feet or less.
.sunday...southeast winds 10 to 15 knots. mostly cloudy. a chance of
light showers until late afternoon. waves 2 feet or less.
.sunday night...southwest winds 15 to 20 knots. cloudy. light
showers likely after midnight. waves 1 to 3 feet.
.monday...southwest winds 15 to 20 knots diminishing to 10 to 15
knots in the evening. mostly cloudy in the morning becoming partly
cloudy. light showers likely in the morning. a chance of light
showers in the afternoon and evening. a chance of thunderstorms in
the evening. waves 1 to 3 feet.
.tuesday...southwest winds 15 to 20 knots. mostly cloudy. light
showers likely and a chance of thunderstorms. waves 2 feet or less.
.wednesday...southwest winds 15 to 20 knots. mostly cloudy with
light showers likely and a chance of thunderstorms. waves 1 to 3
feet.

$$

fzus63 kmkx 111432
glflm 
expires:202604112130;;193010

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
932 am cdt sat apr 11 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 30.4 inches will continue to build over the 
western great lakes this morning, causing winds to become light 
and variable. southeast winds return this afternoon and become 
gusty tonight as a sharper pressure gradient moves over lake
michigan as low pressure moves into the northern great plains.

low pressure will shift into the northern great plains during the
day sunday as it deepens to near 29.4 inches. the low will quickly
shift east toward lake superior sunday night, reaching the
southern shores of the hudson bay by daybreak monday morning.
winds will thus increase further across the open waters sunday
through sunday night. will be monitoring for gale potential
during this time frame, particularly over the northern half of
lake michigan. as of this forecast update, forecast models
continue to suggest possible gales and headlines may be needed in
the coming days. 

winds will weaken monday morning as high pressure of 30.0 inches 
moves across ontario. then, passing low pressure systems will lead
to persistently active conditions across lake michigan into next 
week. will need to monitor thunderstorm development during the 
monday- wednesday time period, as some storms could become strong 
to severe.


lmz080-669-671-673-675-777-779-870-872-874-876-878-112130-
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-
932 am cdt sat apr 11 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds 5 to 10 kt becoming east 10 to
20 kt. waves 1 to 2 ft. 
.tonight...east winds 10 to 15 kt becoming southeast 10 to 20 kt
late in the evening, then increasing to 15 to 25 kt after
midnight increasing to 30 kt late. slight chance of rain showers
in the evening, then chance of rain showers and slight chance of
thunderstorms overnight. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.sunday...south winds to 30 kt diminishing to 15 to 25 kt. chance
of rain showers in the morning, then rain showers likely in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.sunday night...southwest winds to 30 kt. rain showers. waves
7 to 10 ft occasionally to 13 ft. 
.monday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
chance of rain showers. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.monday night...south winds 10 to 20 kt increasing to 15 to
25 kt. rain showers likely with a chance of thunderstorms. waves
2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain showers and thunderstorms. waves 4 to 6 ft
occasionally to 8 ft. 
.wednesday...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of rain showers. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 111432
glflm 
expires:202604112130;;193009

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
932 am cdt sat apr 11 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 30.4 inches will continue to build over the 
western great lakes this morning, causing winds to become light 
and variable. southeast winds return this afternoon and become 
gusty tonight as a sharper pressure gradient moves over lake
michigan as low pressure moves into the northern great plains.

low pressure will shift into the northern great plains during the
day sunday as it deepens to near 29.4 inches. the low will quickly
shift east toward lake superior sunday night, reaching the
southern shores of the hudson bay by daybreak monday morning.
winds will thus increase further across the open waters sunday
through sunday night. will be monitoring for gale potential
during this time frame, particularly over the northern half of
lake michigan. as of this forecast update, forecast models
continue to suggest possible gales and headlines may be needed in
the coming days. 

winds will weaken monday morning as high pressure of 30.0 inches 
moves across ontario. then, passing low pressure systems will lead
to persistently active conditions across lake michigan into next 
week. will need to monitor thunderstorm development during the 
monday- wednesday time period, as some storms could become strong 
to severe.


lmz261-362-364-366-563-565-567-868-112130-
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-
932 am cdt sat apr 11 2026

sheboygan wi to pentwater mi north...

.rest of today...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.tonight...south winds 10 to 20 kt becoming southeast to 30 kt.
chance of rain showers in the evening, then rain showers and
slight chance of thunderstorms overnight. waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft. 
.sunday...southeast winds to 30 kt becoming south. patchy fog in
the morning. rain showers. waves 6 to 9 ft occasionally to 12 ft.
.sunday night...south gales to 40 kt becoming southwest. rain
showers likely in the evening, then chance of rain showers
overnight. waves 8 to 11 ft occasionally to 14 ft. 
.monday...southwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.monday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. rain showers with a chance of thunderstorms. waves 2 to
4 ft building to 3 to 5 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
rain showers likely. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of rain showers. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 111401
glfls 
expires:202604112000;;191909

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 11 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...

30.5 inch high pressure moves over the lower great lakes today 
before jettisoning off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low develops on the lee of the 
northern rockies today and lifts northeast through northwestern 
ontario sunday evening before moving into far northern quebec by 
monday morning. another 29.5 inch low takes shape over the central 
plains on monday before lifting through the upper great lakes at 
29.6 inches monday night through tuesday morning. remnant troughing 
of around 29.7 inches remains over the upper great lakes the rest of 
the day tuesday before another low from the central plains lifts 
through lake superior at 29.4 inches on wednesday.



lsz266-112000-
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 am edt sat apr 11 2026

.rest of today...west winds 5 to 15 knots backing south in the
afternoon, then backing southeast late. waves calm to 2 feet. 
.tonight...southeast winds 15 to 25 knots veering south after
midnight, then becoming southeast 20 to 30 knots late. a chance
of rain showers through midnight, then rain showers and a slight
chance of thunderstorms after midnight. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday...south winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 20 to 30 knots in the afternoon.
rain showers. a chance of thunderstorms by mid afternoon. waves
building to 4 to 8 feet occasionally to 10 feet. 
.sunday night...south winds 20 to 30 knots becoming west 15 to
25 knots after midnight. a slight chance of thunderstorms through
midnight. a chance of rain showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.monday...northwest winds 15 to 25 knots becoming north 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers through
midnight. rain showers likely after midnight. waves building to
1 to 3 feet. 
.tuesday...east winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.wednesday...west winds 15 to 25 knots backing southwest. a
chance of rain showers. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 

$$

fzus63 kmqt 111401
glfls 
expires:202604112000;;191910

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 11 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...

30.5 inch high pressure moves over the lower great lakes today 
before jettisoning off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low develops on the lee of the 
northern rockies today and lifts northeast through northwestern 
ontario sunday evening before moving into far northern quebec by 
monday morning. another 29.5 inch low takes shape over the central 
plains on monday before lifting through the upper great lakes at 
29.6 inches monday night through tuesday morning. remnant troughing 
of around 29.7 inches remains over the upper great lakes the rest of 
the day tuesday before another low from the central plains lifts 
through lake superior at 29.4 inches on wednesday.



lsz267-112000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt sat apr 11 2026

.rest of today...west winds 5 to 15 knots backing southwest in
the afternoon, then backing southeast late. waves calm to 2 feet.
.tonight...southeast winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday...southeast winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots late. rain
showers. a slight chance of thunderstorms by mid afternoon. waves
building to 4 to 8 feet occasionally to 10 feet. 
.sunday night...south winds 20 to 30 knots becoming southwest
15 to 25 knots after midnight. rain showers likely and a chance
of thunderstorms through midnight, then a chance of rain showers
after midnight. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.monday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. a slight chance of rain showers
through early afternoon. waves subsiding to 1 to 3 feet. 
.monday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. rain showers likely after midnight.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...east winds 10 to 20 knots. rain showers likely, then a
chance of rain showers. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of rain
showers. waves subsiding to calm to 2 feet, then building to 2 to
4 feet. 

$$

fzus63 kmqt 111401
glfls 
expires:202604112000;;191907

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 11 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...

30.5 inch high pressure moves over the lower great lakes today 
before jettisoning off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low develops on the lee of the 
northern rockies today and lifts northeast through northwestern 
ontario sunday evening before moving into far northern quebec by 
monday morning. another 29.5 inch low takes shape over the central 
plains on monday before lifting through the upper great lakes at 
29.6 inches monday night through tuesday morning. remnant troughing 
of around 29.7 inches remains over the upper great lakes the rest of 
the day tuesday before another low from the central plains lifts 
through lake superior at 29.4 inches on wednesday.



lsz264-112000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt sat apr 11 2026

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

$$

fzus63 kmqt 111401
glfls 
expires:202604112000;;191906

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 11 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...

30.5 inch high pressure moves over the lower great lakes today 
before jettisoning off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low develops on the lee of the 
northern rockies today and lifts northeast through northwestern 
ontario sunday evening before moving into far northern quebec by 
monday morning. another 29.5 inch low takes shape over the central 
plains on monday before lifting through the upper great lakes at 
29.6 inches monday night through tuesday morning. remnant troughing 
of around 29.7 inches remains over the upper great lakes the rest of 
the day tuesday before another low from the central plains lifts 
through lake superior at 29.4 inches on wednesday.



lsz263-112000-
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 am edt sat apr 11 2026

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

$$

fzus63 kmqt 111401
glfls 
expires:202604112000;;191905

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 11 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...

30.5 inch high pressure moves over the lower great lakes today 
before jettisoning off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low develops on the lee of the 
northern rockies today and lifts northeast through northwestern 
ontario sunday evening before moving into far northern quebec by 
monday morning. another 29.5 inch low takes shape over the central 
plains on monday before lifting through the upper great lakes at 
29.6 inches monday night through tuesday morning. remnant troughing 
of around 29.7 inches remains over the upper great lakes the rest of 
the day tuesday before another low from the central plains lifts 
through lake superior at 29.4 inches on wednesday.



lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat apr 11 2026 /900 am cdt sat apr 11 2026/

.rest of today...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. a chance of rain showers by mid
afternoon. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots. rain showers and a slight
chance of thunderstorms. waves building to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots backing northeast late. rain
showers likely. a chance of thunderstorms by mid afternoon. waves
subsiding to 1 to 3 feet. 
.sunday night...west winds 10 to 20 knots. a chance of rain
showers and a slight chance of thunderstorms through midnight.
waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots veering east by mid
afternoon. a slight chance of rain showers by mid afternoon.
waves calm to 2 feet. 
.monday night...northeast winds 10 to 20 knots. rain showers
likely. waves building to 1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots. a chance of rain
showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday...west winds 5 to 15 knots veering northeast. a chance
of rain showers. waves building to 2 to 4 feet, then subsiding to
calm to 2 feet. 

$$

fzus63 kmqt 111401
glfls 
expires:202604112000;;191908

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 11 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...

30.5 inch high pressure moves over the lower great lakes today 
before jettisoning off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low develops on the lee of the 
northern rockies today and lifts northeast through northwestern 
ontario sunday evening before moving into far northern quebec by 
monday morning. another 29.5 inch low takes shape over the central 
plains on monday before lifting through the upper great lakes at 
29.6 inches monday night through tuesday morning. remnant troughing 
of around 29.7 inches remains over the upper great lakes the rest of 
the day tuesday before another low from the central plains lifts 
through lake superior at 29.4 inches on wednesday.



lsz265-112000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt sat apr 11 2026

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

$$