fzus61 kbuf 231400
glflo 
expires:202605232100;;511810

open lake forecast for lake ontario
national weather service buffalo ny
1000 am edt sat may 23 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a large 30.4 inch high will strengthen to 30.6 inches as 
it anchors over atlantic canada through sunday. a 29.9 inch low and 
attendant warm front will then approach the lower great lakes late 
tonight and saturday, before weakening and sliding eastward sunday. 
a 30.1 inch high will settle across the region monday through 
tuesday. a cold front associated with a 29.8 inch low over new 
england will drop south across the lake on wednesday. high pressure 
over canada will start to expand south over the lake on thursday.


loz062-232100-
lake ontario open waters from the niagara river to hamlin beach-
1000 am edt sat may 23 2026

.this afternoon...east winds 15 to 25 knots increasing to
30 knots. rain. waves 3 to 5 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.tonight...east winds to 30 knots diminishing to 15 to 25 knots.
rain early, then showers from late evening on. waves 5 to 8 feet
subsiding to 3 to 6 feet. waves occasionally around 10 feet. 
.sunday...east winds 15 to 20 knots diminishing to 5 to 15 knots.
showers in the morning, then a chance of showers in the
afternoon. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday night...east winds less than 10 knots. a chance of
showers. waves 1 foot or less. 
.monday...light and variable winds. a chance of showers during
the day. waves 1 foot or less. 
.tuesday...southwest winds 10 knots or less becoming west. waves
1 foot or less. 
.wednesday...west winds 10 knots or less becoming north. waves
1 foot or less. 

$$

fzus61 kbuf 231400
glflo 
expires:202605232100;;511811

open lake forecast for lake ontario
national weather service buffalo ny
1000 am edt sat may 23 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a large 30.4 inch high will strengthen to 30.6 inches as 
it anchors over atlantic canada through sunday. a 29.9 inch low and 
attendant warm front will then approach the lower great lakes late 
tonight and saturday, before weakening and sliding eastward sunday. 
a 30.1 inch high will settle across the region monday through 
tuesday. a cold front associated with a 29.8 inch low over new 
england will drop south across the lake on wednesday. high pressure 
over canada will start to expand south over the lake on thursday.


loz063>065-232100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1000 am edt sat may 23 2026

.this afternoon...southeast winds 15 to 25 knots. rain. waves 1 to
3 feet building to 3 to 5 feet. 
.tonight...southeast winds 15 to 25 knots. rain early, then
showers from late evening on. waves 3 to 6 feet building to 4 to
7 feet, then subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.sunday...southeast winds 15 to 25 knots. showers. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.sunday night...southeast winds 15 to 20 knots becoming south
10 to 15 knots. a chance of showers overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday...southwest winds 10 knots or less. a chance of showers
during the day. waves 1 foot or less. 
.tuesday...southwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.wednesday...west winds 5 to 10 knots becoming north. waves
1 foot or less. 

$$

fzus61 kcle 231954
glfle 
expires:202605240230;;527801

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt sat may 23 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 30.00 inches moves to the northeast tonight while 
lifting a warm front east across the lake. another low 30.00
inches will then drag a cold front through the region sunday into
sunday night. high pressure 30.20 inches will build overhead 
monday and remain in the region through mid-week. 


lez061-169-240230-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
354 pm edt sat may 23 2026

.tonight...southeast winds to 30 knots becoming south 15 to
25 knots. a chance of showers with isolated thunderstorms this
evening, then a chance of showers after midnight. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.sunday...south winds 5 to 15 knots becoming northwest less than
10 knots. a slight chance of showers early. a slight chance of
showers late. waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday night...light and variable winds. a chance of showers.
waves 1 foot or less. 
.monday...light and variable winds. waves 1 foot or less. 
.monday night...light and variable winds. waves 1 foot or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.wednesday...light and variable winds becoming north 5 to
10 knots. waves 1 foot or less. 
.thursday...northeast winds 10 knots or less. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 231954
glfle 
expires:202605240230;;527799

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt sat may 23 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 30.00 inches moves to the northeast tonight while 
lifting a warm front east across the lake. another low 30.00
inches will then drag a cold front through the region sunday into
sunday night. high pressure 30.20 inches will build overhead 
monday and remain in the region through mid-week. 


lez162-163-240230-
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-
354 pm edt sat may 23 2026

.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots. a slight chance of showers early. waves 2 feet or less.
.sunday...southwest winds 10 knots or less becoming east. a
chance of showers with a slight chance of thunderstorms early in
the afternoon. showers likely with a chance of thunderstorms
late. waves 1 foot or less. 
.sunday night...north winds less than 10 knots becoming
northwest. a chance of showers and thunderstorms in the evening.
waves 1 foot or less. 
.monday...north winds less than 10 knots becoming southeast.
waves 1 foot or less. 
.monday night...southeast winds 10 knots or less. waves 1 foot or
less. 
.tuesday...east winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...northeast winds 10 knots or less. a chance of
showers during the day. waves 1 foot or less. 
.thursday...northeast winds 5 to 15 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 231954
glfle 
expires:202605240230;;527800

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt sat may 23 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 30.00 inches moves to the northeast tonight while 
lifting a warm front east across the lake. another low 30.00
inches will then drag a cold front through the region sunday into
sunday night. high pressure 30.20 inches will build overhead 
monday and remain in the region through mid-week. 


lez164>168-240230-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
354 pm edt sat may 23 2026

.tonight...south winds 15 to 25 knots. showers likely with
isolated thunderstorms early, then a chance of showers late this
evening. a slight chance of showers after midnight. waves 3 to
6 feet subsiding to 2 to 4 feet. 
.sunday...south winds 10 knots or less becoming northeast. a
chance of showers with a slight chance of thunderstorms late.
waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday night...northeast winds less than 10 knots becoming
north. a chance of showers in the evening. waves 1 foot or less. 
.monday...northwest winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.monday night...light and variable winds. waves 1 foot or less. 
.tuesday...southeast winds less than 10 knots becoming south.
waves 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming north.
waves 1 foot or less. 
.thursday...northeast winds 5 to 15 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 232000
glflh 
expires:202605240400;;527989

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt sat may 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.90 inches, will lift from eastern
lake erie this afternoon into central lake huron tonight,
weakening to 30.10 inches. a weak surface front will cross the
region sunday, providing a chance for showers and isolated
thunderstorms. high pressure will then expand across the eastern
great lakes sunday night into monday.


lhz362-363-240400-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
400 pm edt sat may 23 2026

.tonight...northeast winds 15 to 20 knots becoming north 5 to
10 knots. a chance of showers. patchy fog. waves 4 to 6 feet. 
.sunday...north winds 5 to 10 knots veering to the south in the
late morning and afternoon. patchy fog. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. waves
occasionally around 8 feet. 
.sunday night...southeast winds 5 to 10 knots early in the
evening becoming light and variable. waves 2 feet or less. 
.monday...light and variable winds becoming south 10 to 15 knots.
waves 2 feet or less. 
.monday night...south winds 5 to 10 knots. waves 1 to 3 feet. 
.tuesday...south winds 5 to 10 knots increasing to 10 to 15 knots
late in the morning...then decreasing to 5 to 10 knots late in
the afternoon veering to the southwest late in the evening. waves
2 feet or less. 
.wednesday...west winds 5 to 10 knots. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 232000
glflh 
expires:202605240400;;527988

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt sat may 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.90 inches, will lift from eastern
lake erie this afternoon into central lake huron tonight,
weakening to 30.10 inches. a weak surface front will cross the
region sunday, providing a chance for showers and isolated
thunderstorms. high pressure will then expand across the eastern
great lakes sunday night into monday.


lhz361-240400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
400 pm edt sat may 23 2026

.tonight...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. patchy fog after midnight.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.sunday...northeast winds 5 to 10 knots early in the morning
becoming light and variable. patchy fog. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.sunday night...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming north 5 to 10 knots
in the late morning and early afternoon...then veering to the
southeast early in the afternoon. waves 2 feet or less. 
.monday night...light and variable winds becoming south 5 to
10 knots after midnight. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots veering to the west. waves
2 feet or less. 
.wednesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming southwest 5 to
10 knots . waves 2 feet or less. 
.thursday...northeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 232000
glflh 
expires:202605240400;;527990

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt sat may 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.90 inches, will lift from eastern
lake erie this afternoon into central lake huron tonight,
weakening to 30.10 inches. a weak surface front will cross the
region sunday, providing a chance for showers and isolated
thunderstorms. high pressure will then expand across the eastern
great lakes sunday night into monday.


lhz462>464-240400-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
400 pm edt sat may 23 2026

.tonight...east winds 15 to 20 knots becoming southeast 5 to
10 knots. showers likely in the evening...then a chance of
showers after midnight. patchy fog. waves 3 to 5 feet. 
.sunday...southeast winds 5 to 10 knots. patchy fog in the
morning. a chance of showers in the afternoon. waves 1 to 3 feet.
.sunday night...southeast winds 5 to 10 knots early in the
evening becoming light and variable. a chance of showers in the
evening. waves 2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.monday night...south winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots veering to the north. waves
2 feet or less. 
.thursday...north winds 5 to 10 knots increasing to 10 to
15 knots early in the evening...then decreasing to 5 to 10 knots
by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 231342
glfsc 
expires:202605232145;;511375

lake st clair forecast
national weather service detroit/pontiac mi
942 am edt sat may 23 2026

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

.synopsis...low pressure, 29.90 inches, will lift from eastern
ohio across metro detroit this morning. the low will then lift
into central lake huron tonight, weakening to 30.00 inches. a
weak surface front will cross the region sunday, providing a
chance for showers and isolated thunderstorms. high pressure will
then expand across the eastern great lakes sunday night into
monday.


lcz460-232145-
lake st clair-
942 am edt sat may 23 2026

...small craft advisory in effect through this evening...

.rest of today...east winds 20 to 25 knots with gusts to 30 knots
diminishing to 15 to 20 knots late in the afternoon. showers. waves
3 to 5 feet. waves occasionally around 7 feet.
.tonight...southeast winds 10 to 15 knots veering to the southwest
by midnight...then diminishing to 5 to 10 knots early in the
morning. mostly cloudy. a chance of light showers in the evening.
waves 1 to 3 feet.
.sunday...south winds 5 to 10 knots. mostly cloudy. a chance of
light showers early in the afternoon. waves 2 feet or less.
.sunday night...south winds 5 to 10 knots early in the evening
becoming light and variable. mostly cloudy with a chance of light
showers early in the evening...then partly cloudy in the late
evening and overnight. waves 2 feet or less.
.monday...light and variable winds becoming south 5 to 10 knots in
the evening. mostly sunny becoming partly cloudy. waves nearly calm.
.tuesday...southwest winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.wednesday...northeast winds 5 to 10 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kmkx 231948
glflm 
expires:202605240330;;527614

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt sat may 23 2026

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

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

.synopsis...
low pressure of 29.9 inches currently entering the western portion
of lake erie has left a weak wind field in its wake as it tracks
to the east toward new england. another area of low pressure of
29.8 inches currently over far southeast manitoba will track
eastward across ontario tonight into sunday and pull a weak cold
front eastward along with it. this front should reach eastern lake
michigan early sunday morning and exit by late morning. going into
early next week, a broad ridge of high pressure of 30.2 inches is
expected to set up over the eastern great lakes, ushering in more
southwesterly winds across lake michigan. some questions remain
for later in the week with whether a cold front drops down from
the north by midweek.  



lmz261-362-364-366-563-565-567-868-240330-
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-
248 pm cdt sat may 23 2026

sheboygan wi to pentwater mi north...

.tonight...east winds to 30 kt diminishing to 15 to 25 kt late
this evening, then diminishing to 10 to 20 kt after midnight
becoming southeast 10 to 15 kt late. waves 4 to 6 ft occasionally
to 8 ft subsiding to 1 to 2 ft. 
.sunday...south winds 5 to 10 kt increasing to 10 to 15 kt.
isolated rain showers in the morning. waves 1 to 2 ft. 
.sunday night...south winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.monday...south winds 10 to 20 kt. waves 1 to 2 ft building to
2 to 4 ft. 
.monday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. waves 2 to 4 ft. 
.tuesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft. 
.tuesday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.thursday...northeast winds 10 to 20 kt increasing to 30 kt.
waves 2 to 4 ft building to 3 to 5 ft.  

$$

fzus63 kmkx 231948
glflm 
expires:202605240330;;527615

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt sat may 23 2026

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

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

.synopsis...
low pressure of 29.9 inches currently entering the western portion
of lake erie has left a weak wind field in its wake as it tracks
to the east toward new england. another area of low pressure of
29.8 inches currently over far southeast manitoba will track
eastward across ontario tonight into sunday and pull a weak cold
front eastward along with it. this front should reach eastern lake
michigan early sunday morning and exit by late morning. going into
early next week, a broad ridge of high pressure of 30.2 inches is
expected to set up over the eastern great lakes, ushering in more
southwesterly winds across lake michigan. some questions remain
for later in the week with whether a cold front drops down from
the north by midweek.  



lmz080-669-671-673-675-777-779-870-872-874-876-878-240330-
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-
248 pm cdt sat may 23 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 5 to 10 kt veering to southeast.
isolated rain showers and thunderstorms overnight. waves 1 to
2 ft. 
.sunday...southeast winds less than 10 kt increasing to 5 to
10 kt. scattered rain showers with isolated thunderstorms in the
morning. waves 1 ft or less. 
.sunday night...south winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.monday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.monday night...south winds 10 to 15 kt diminishing to 5 to
10 kt. waves 2 to 4 ft. 
.tuesday...south winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 3 ft. 
.tuesday night...southeast winds 5 to 10 kt. waves 1 to 2 ft. 
.wednesday...east winds 5 to 10 kt becoming north. waves nearly
calm building to 1 to 2 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 15 to
25 kt. waves 2 to 4 ft building to 3 to 5 ft.  

$$

fzus63 kmqt 232001
glfls 
expires:202605240800;;528050

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat may 23 2026

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

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

.synopsis... 

lake superior is currently between a 30.5 inch high centered over 
eastern quebec and a pair of 29.9 inch lows, one over northern ohio 
and one over northern minnesota. into the evening, the lows weaken 
to remnant 30.0 inch troughs over the upper great lakes while the 
high shifts over nova scotia. sunday, lake superior will be between 
the high, now off the canada coast, and broad 29.6 inch low pressure 
over saskatchewan. a 30.1 inch ridge forms monday over the lower 
great lakes as the low retreats to alberta. monday night, a 29.8 
inch trough will be over northern ontario, extending 29.9 inch 
troughing over the lake. by tuesday night, a 30.2 inch high over the 
western shores of hudson bay will extend weak ridging over lake 
superior with 29.4 inch troughing forming in the lee of the northern 
us rockies. pressure rises over the lake as the high shifts 
southeast over northern ontario while low pressure over the west 
weakens on wednesday.



lsz162-240800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat may 23 2026 /300 pm cdt sat may 23 2026/

.late this afternoon...northeast winds 10 to 20 knots. a chance
of rain showers. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots veering southwest late.
a slight chance of rain showers through midnight. patchy dense
fog. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south late. a
slight chance of showers and thunderstorms by mid afternoon.
waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...south winds 5 to 15 knots backing east by mid
afternoon. a slight chance of showers and thunderstorms by mid
afternoon. waves calm to 2 feet. 
.monday night...north winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202605240800;;528051

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat may 23 2026

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

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

.synopsis... 

lake superior is currently between a 30.5 inch high centered over 
eastern quebec and a pair of 29.9 inch lows, one over northern ohio 
and one over northern minnesota. into the evening, the lows weaken 
to remnant 30.0 inch troughs over the upper great lakes while the 
high shifts over nova scotia. sunday, lake superior will be between 
the high, now off the canada coast, and broad 29.6 inch low pressure 
over saskatchewan. a 30.1 inch ridge forms monday over the lower 
great lakes as the low retreats to alberta. monday night, a 29.8 
inch trough will be over northern ontario, extending 29.9 inch 
troughing over the lake. by tuesday night, a 30.2 inch high over the 
western shores of hudson bay will extend weak ridging over lake 
superior with 29.4 inch troughing forming in the lee of the northern 
us rockies. pressure rises over the lake as the high shifts 
southeast over northern ontario while low pressure over the west 
weakens on wednesday.



lsz263-240800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 pm edt sat may 23 2026

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

$$

fzus63 kmqt 232001
glfls 
expires:202605240800;;528052

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat may 23 2026

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

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

.synopsis... 

lake superior is currently between a 30.5 inch high centered over 
eastern quebec and a pair of 29.9 inch lows, one over northern ohio 
and one over northern minnesota. into the evening, the lows weaken 
to remnant 30.0 inch troughs over the upper great lakes while the 
high shifts over nova scotia. sunday, lake superior will be between 
the high, now off the canada coast, and broad 29.6 inch low pressure 
over saskatchewan. a 30.1 inch ridge forms monday over the lower 
great lakes as the low retreats to alberta. monday night, a 29.8 
inch trough will be over northern ontario, extending 29.9 inch 
troughing over the lake. by tuesday night, a 30.2 inch high over the 
western shores of hudson bay will extend weak ridging over lake 
superior with 29.4 inch troughing forming in the lee of the northern 
us rockies. pressure rises over the lake as the high shifts 
southeast over northern ontario while low pressure over the west 
weakens on wednesday.



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

.late this afternoon...southeast winds 15 to 25 knots. a chance
of rain showers. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...southeast winds 20 to 30 knots diminishing to 10 to
20 knots late. a chance of rain showers. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.sunday...southwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.sunday night...south winds 5 to 15 knots veering west late.
waves calm to 2 feet. 
.monday...south winds less than 10 knots becoming southeast 5 to
15 knots by mid afternoon. a slight chance of rain showers by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...east winds less than 10 knots becoming northeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.
.thursday...northeast winds 5 to 15 knots diminishing to less
than 10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202605240800;;528053

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat may 23 2026

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

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

.synopsis... 

lake superior is currently between a 30.5 inch high centered over 
eastern quebec and a pair of 29.9 inch lows, one over northern ohio 
and one over northern minnesota. into the evening, the lows weaken 
to remnant 30.0 inch troughs over the upper great lakes while the 
high shifts over nova scotia. sunday, lake superior will be between 
the high, now off the canada coast, and broad 29.6 inch low pressure 
over saskatchewan. a 30.1 inch ridge forms monday over the lower 
great lakes as the low retreats to alberta. monday night, a 29.8 
inch trough will be over northern ontario, extending 29.9 inch 
troughing over the lake. by tuesday night, a 30.2 inch high over the 
western shores of hudson bay will extend weak ridging over lake 
superior with 29.4 inch troughing forming in the lee of the northern 
us rockies. pressure rises over the lake as the high shifts 
southeast over northern ontario while low pressure over the west 
weakens on wednesday.



lsz265-240800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sat may 23 2026

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

$$

fzus63 kmqt 232001
glfls 
expires:202605240800;;528054

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat may 23 2026

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

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

.synopsis... 

lake superior is currently between a 30.5 inch high centered over 
eastern quebec and a pair of 29.9 inch lows, one over northern ohio 
and one over northern minnesota. into the evening, the lows weaken 
to remnant 30.0 inch troughs over the upper great lakes while the 
high shifts over nova scotia. sunday, lake superior will be between 
the high, now off the canada coast, and broad 29.6 inch low pressure 
over saskatchewan. a 30.1 inch ridge forms monday over the lower 
great lakes as the low retreats to alberta. monday night, a 29.8 
inch trough will be over northern ontario, extending 29.9 inch 
troughing over the lake. by tuesday night, a 30.2 inch high over the 
western shores of hudson bay will extend weak ridging over lake 
superior with 29.4 inch troughing forming in the lee of the northern 
us rockies. pressure rises over the lake as the high shifts 
southeast over northern ontario while low pressure over the west 
weakens on wednesday.



lsz266-240800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 pm edt sat may 23 2026

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

$$

fzus63 kmqt 232001
glfls 
expires:202605240800;;528055

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat may 23 2026

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

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

.synopsis... 

lake superior is currently between a 30.5 inch high centered over 
eastern quebec and a pair of 29.9 inch lows, one over northern ohio 
and one over northern minnesota. into the evening, the lows weaken 
to remnant 30.0 inch troughs over the upper great lakes while the 
high shifts over nova scotia. sunday, lake superior will be between 
the high, now off the canada coast, and broad 29.6 inch low pressure 
over saskatchewan. a 30.1 inch ridge forms monday over the lower 
great lakes as the low retreats to alberta. monday night, a 29.8 
inch trough will be over northern ontario, extending 29.9 inch 
troughing over the lake. by tuesday night, a 30.2 inch high over the 
western shores of hudson bay will extend weak ridging over lake 
superior with 29.4 inch troughing forming in the lee of the northern 
us rockies. pressure rises over the lake as the high shifts 
southeast over northern ontario while low pressure over the west 
weakens on wednesday.



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

.late this afternoon...southeast winds to 30 knots with a few
gale force gusts to 35 knots possible. waves 3 to 6 feet
occasionally to 8 feet. 
.tonight...southeast winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots veering south in the
afternoon. a slight chance of rain showers through early
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight, then veering southwest late. waves
building to 1 to 3 feet. 
.monday...south winds 5 to 15 knots backing southeast 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...southwest winds 5 to 15 knots veering north by mid
afternoon. waves calm to 2 feet. 
.tuesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 
.thursday...north winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 

$$