fzus61 kbuf 112004
glflo 
expires:202604120300;;206853

open lake forecast for lake ontario
national weather service buffalo ny
404 pm 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 area of high pressure over the lake this 
evening, will slip towards new england later tonight and 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>065-120300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
404 pm edt sat apr 11 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 112004
glflo 
expires:202604120300;;206852

open lake forecast for lake ontario
national weather service buffalo ny
404 pm 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 area of high pressure over the lake this 
evening, will slip towards new england later tonight and 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.


loz062-120300-
lake ontario open waters from the niagara river to hamlin beach-
404 pm edt sat apr 11 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 111953
glfle 
expires:202604120215;;206390

open lake forecast for lake erie
national weather service cleveland oh
353 pm 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. low pressure of 29.70 inches
will pass north of lake erie on thursday. 


lez164>167-120215-
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-
353 pm edt sat apr 11 2026

.tonight...southeast winds 10 knots or less. waves 1 foot or
less. 
.sunday...southeast winds 5 to 15 knots becoming south. a slight
chance of showers from late morning on. 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. showers likely. waves
3 to 6 feet. 
.monday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms in the evening, then showers likely
with a chance of thunderstorms overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet building to 3 to 5 feet. 
.wednesday...southwest winds 15 to 20 knots. showers likely
during the day, then showers likely with a chance of
thunderstorms wednesday night. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.thursday...southwest winds 15 to 20 knots diminishing to 5 to
10 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 111953
glfle 
expires:202604120215;;206391

open lake forecast for lake erie
national weather service cleveland oh
353 pm 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. low pressure of 29.70 inches
will pass north of lake erie on thursday. 


lez061-168-169-120215-
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-
353 pm edt sat apr 11 2026

.tonight...light and variable winds. waves 1 foot or less. 
.sunday...east winds 5 to 15 knots becoming south. a slight
chance of rain showers late in the morning. a chance of rain
showers in the afternoon. waves 2 feet or less. 
.sunday night...south winds 15 to 20 knots becoming southwest.
waves 1 to 3 feet building to 3 to 5 feet. 
.monday...southwest winds 15 to 20 knots. showers. waves 3 to
6 feet. 
.monday night...southwest winds 15 to 20 knots diminishing to
around 10 knots. a chance of showers. waves 3 to 5 feet subsiding
to 1 to 2 feet. 
.tuesday...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots. showers likely
during the day, then showers likely with a chance of
thunderstorms wednesday night. waves 1 to 3 feet. 
.thursday...southwest winds 10 knots or less. a chance of
showers. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 111953
glfle 
expires:202604120215;;206389

open lake forecast for lake erie
national weather service cleveland oh
353 pm 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. low pressure of 29.70 inches
will pass north of lake erie on thursday. 


lez162-163-120215-
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-
353 pm edt sat apr 11 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 111957
glfsc 
expires:202604120400;;206414

lake st clair forecast
national weather service detroit/pontiac mi
357 pm 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, tracks into the eastern
great lakes tonight. active weather returns sunday morning, with 
intervals of showers, thunderstorms, and potential for gusty winds
through wednesday due to several passing disturbances.


lcz460-120400-
lake st clair-
357 pm edt sat apr 11 2026

.tonight...southeast winds 5 to 10 knots. partly cloudy this evening
becoming mostly cloudy. 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. mostly cloudy. light
showers likely after midnight. waves 1 to 3 feet.
.monday...southwest winds 15 to 20 knots. mostly cloudy. light
showers likely until late afternoon...then a chance of light showers
early in the afternoon. waves 1 to 3 feet.
.monday night...southwest winds 10 to 15 knots. partly cloudy with a
chance of showers and thunderstorms ...then cloudy with light
showers likely and a chance of thunderstorms after midnight. waves 2
feet or less.
.tuesday...southwest winds 10 to 15 knots increasing to 15 to 20
knots in the afternoon...then diminishing to 10 to 15 knots in the
evening. mostly cloudy with light showers likely and a chance of
thunderstorms. waves 1 to 3 feet.
.wednesday...southwest winds 15 to 20 knots. mostly cloudy with
light showers likely and a chance of thunderstorms. waves 1 to 3
feet.
.thursday...west winds 10 to 15 knots. partly cloudy. light showers
likely and a chance of thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 111957
glflh 
expires:202604120400;;206411

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm 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, tracks into the eastern
great lakes tonight. active weather returns sunday morning, with 
intervals of showers, thunderstorms, and potential for gusty winds
through wednesday due to several passing disturbances.


lhz361-362-120400-
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-
357 pm edt sat apr 11 2026

.tonight...southeast winds 10 to 15 knots. a chance of 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 late in the afternoon. showers.
waves 4 to 6 feet building to 6 to 9 feet in the afternoon. waves
occasionally around 12 feet. 
.sunday night...south winds 15 to 20 knots becoming southwest
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. showers. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. a chance of showers.
waves 4 to 6 feet. 
.monday night...north winds 5 to 10 knots becoming east 10 to
15 knots after midnight. showers likely after midnight. waves
2 to 4 feet subsiding to 1 to 3 feet in the late evening and
overnight. waves occasionally around 8 feet. 
.tuesday...southeast winds 10 to 15 knots backing to the east
late in the evening. showers likely in the morning. a chance of
showers late in the morning...then showers likely late in the
evening. waves 3 to 5 feet. 
.wednesday...east winds 10 to 15 knots veering to the southwest .
showers likely early in the morning. a chance of showers. waves
3 to 5 feet. 
.thursday...southwest winds 10 to 15 knots. a chance of showers
early in the morning. waves 3 to 5 feet. 


$$

fzus63 kdtx 111957
glflh 
expires:202604120400;;206412

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm 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, tracks into the eastern
great lakes tonight. active weather returns sunday morning, with 
intervals of showers, thunderstorms, and potential for gusty winds
through wednesday due to several passing disturbances.


lhz363-462>464-120400-
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-
357 pm edt sat apr 11 2026

.tonight...southeast winds 5 to 10 knots 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. 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 becoming southwest
20 to 25 knots after midnight. showers likely in the evening...
then showers after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.monday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. a chance of showers. waves 4 to
6 feet. 
.monday night...north winds 5 to 10 knots veering to the east by
midnight...then increasing to 10 to 15 knots after midnight. a
chance of showers in the evening...then showers likely and a
chance of thunderstorms after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. waves
occasionally around 8 feet. 
.tuesday...south winds 10 to 15 knots backing to the northeast
late in the evening. showers likely and a chance of
thunderstorms. waves 2 to 4 feet building to 3 to 5 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots . a chance of showers. waves 3 to 5 feet. 
.thursday...south winds 10 to 15 knots becoming north 5 to
10 knots . a chance of showers until afternoon. waves 2 to
4 feet. 


$$

fzus63 kmkx 112019
glflm 
expires:202604120330;;207913

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
319 pm 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...

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.


lmz261-362-364-366-563-565-567-868-120330-
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-
319 pm cdt sat apr 11 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmkx 112019
glflm 
expires:202604120330;;207914

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
319 pm 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...

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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-120330-
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-
319 pm cdt sat apr 11 2026

sheboygan wi to pentwater mi south...

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

$$

fzus63 kmqt 112001
glfls 
expires:202604120800;;206633

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

30.4 inch high pressure moving over the lower great lakes this 
afternoon jettisons off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low developing on the lee of the 
northern rockies 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 straits of mackinac at 29.6 inches monday 
night through tuesday morning. remnant troughing of around 29.7 to 
29.8 inches remains over the upper great lakes the rest of the day 
tuesday before another low from the central plains lifts through the 
upper great lakes at 29.6 inches wednesday night and thursday.



lsz266-120800-
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 pm edt sat apr 11 2026

.late this afternoon...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...southeast winds 15 to 25 knots becoming south 20 to
30 knots after midnight, then backing southeast 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 to 30 knots with a few gale force gusts
to 35 knots possible becoming south 20 to 30 knots in the
afternoon. a chance of rain showers through early afternoon. a
chance of thunderstorms. rain showers likely by mid afternoon.
waves building to 5 to 9 feet occasionally to 11 feet. 
.sunday night...south winds 15 to 25 knots veering west after
midnight. a slight chance of thunderstorms through midnight. a
chance of rain showers. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots becoming north 5 to
15 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...northeast winds 10 to 20 knots. a chance of rain
showers through early afternoon. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.tuesday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of rain showers. waves building
to 3 to 5 feet occasionally to 7 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. 
.thursday...south winds 15 to 25 knots becoming east 20 to
30 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202604120800;;206634

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

30.4 inch high pressure moving over the lower great lakes this 
afternoon jettisons off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low developing on the lee of the 
northern rockies 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 straits of mackinac at 29.6 inches monday 
night through tuesday morning. remnant troughing of around 29.7 to 
29.8 inches remains over the upper great lakes the rest of the day 
tuesday before another low from the central plains lifts through the 
upper great lakes at 29.6 inches wednesday night and thursday.



lsz267-120800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt sat apr 11 2026

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

$$

fzus63 kmqt 112001
glfls 
expires:202604120800;;206630

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

30.4 inch high pressure moving over the lower great lakes this 
afternoon jettisons off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low developing on the lee of the 
northern rockies 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 straits of mackinac at 29.6 inches monday 
night through tuesday morning. remnant troughing of around 29.7 to 
29.8 inches remains over the upper great lakes the rest of the day 
tuesday before another low from the central plains lifts through the 
upper great lakes at 29.6 inches wednesday night and thursday.



lsz263-120800-
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 pm edt sat apr 11 2026

.late this afternoon...east winds 5 to 15 knots. a slight chance
of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. rain showers and a slight chance of
thunderstorms. waves building to 3 to 5 feet occasionally to
7 feet. 
.sunday...southeast winds 10 to 20 knots becoming south 5 to
15 knots in the afternoon. a chance of rain showers. a chance of
thunderstorms by mid afternoon. waves subsiding to 2 to 4 feet. 
.sunday night...west winds 5 to 15 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 northeast by mid
afternoon. waves calm to 2 feet. 
.monday night...east winds 10 to 20 knots backing northeast after
midnight. rain showers likely. waves building to 1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves building to 2 to 4 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight. a chance of rain showers. waves
2 to 4 feet. 
.wednesday...east 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. 
.thursday...northeast winds 5 to 15 knots increasing to 15 to
25 knots. a chance of rain showers. waves subsiding to calm to
2 feet, then building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202604120800;;206631

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

30.4 inch high pressure moving over the lower great lakes this 
afternoon jettisons off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low developing on the lee of the 
northern rockies 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 straits of mackinac at 29.6 inches monday 
night through tuesday morning. remnant troughing of around 29.7 to 
29.8 inches remains over the upper great lakes the rest of the day 
tuesday before another low from the central plains lifts through the 
upper great lakes at 29.6 inches wednesday night and thursday.



lsz264-120800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt sat apr 11 2026

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south after
midnight, then becoming southeast 20 to 30 knots late. a chance
of rain showers through midnight, then rain showers likely and a
slight chance of thunderstorms 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. a chance of thunderstorms by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.sunday night...south winds 10 to 20 knots becoming west 5 to
15 knots after midnight. a chance of rain showers and a slight
chance of thunderstorms through midnight. waves subsiding to 1 to
3 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 through midnight, then rain showers likely after
midnight. waves building to 1 to 3 feet. 
.tuesday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers. waves building
to 2 to 4 feet. 
.wednesday...east 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. 
.thursday...south winds 5 to 15 knots becoming northeast 15 to
25 knots. a chance of rain showers. a chance of snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202604120800;;206629

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

30.4 inch high pressure moving over the lower great lakes this 
afternoon jettisons off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low developing on the lee of the 
northern rockies 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 straits of mackinac at 29.6 inches monday 
night through tuesday morning. remnant troughing of around 29.7 to 
29.8 inches remains over the upper great lakes the rest of the day 
tuesday before another low from the central plains lifts through the 
upper great lakes at 29.6 inches wednesday night and thursday.



lsz162-120800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat apr 11 2026 /300 pm cdt sat apr 11 2026/

.late this afternoon...east winds 10 to 20 knots. a chance of
rain showers. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots. rain showers through
midnight. a slight chance of thunderstorms. a chance of rain
showers after midnight. waves building to 2 to 4 feet. 
.sunday...southeast winds 10 to 20 knots becoming northeast 5 to
15 knots late. a chance of rain showers. a chance of
thunderstorms by mid afternoon. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
a slight chance of showers and 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. waves building to 2 to
4 feet. 
.tuesday night...northeast winds 10 to 20 knots. a chance of rain
showers. waves subsiding to 1 to 3 feet. 
.wednesday...northeast winds 5 to 15 knots. a chance of rain
showers. waves building to 2 to 4 feet, then subsiding to calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots increasing to 15 to
25 knots. a chance of rain showers. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202604120800;;206632

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

30.4 inch high pressure moving over the lower great lakes this 
afternoon jettisons off of the eastern seaboard into the atlantic on 
sunday. meanwhile, a 29.3 inch low developing on the lee of the 
northern rockies 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 straits of mackinac at 29.6 inches monday 
night through tuesday morning. remnant troughing of around 29.7 to 
29.8 inches remains over the upper great lakes the rest of the day 
tuesday before another low from the central plains lifts through the 
upper great lakes at 29.6 inches wednesday night and thursday.



lsz265-120800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sat apr 11 2026

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

$$