fzus61 kbuf 160802
glflo 
expires:202605161500;;643761

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat may 16 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 29.1 inch low well to the north over hudson bay will 
swing a warm front across the lower great lakes today, with an 
attendant cold front approaching and stalling near the lake tonight. 
a 29.4 inch low over the central plains on sunday will weaken to 
29.7 inches as it moves northeast into the upper great lakes sunday 
night while swinging an attendant warm front across the lake. 
another area of low pressure will develop over the central plains 
monday. the low will weaken from 29.4 inches to 29.6 inches as it 
tracks northeast to the upper great lakes monday night into tuesday 
morning, then to near the southern tip of james bay on tuesday. a 
cold front from this low will cross the lake wednesday.


loz063>065-161500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat may 16 2026

.today...south winds 5 to 15 knots becoming southwest. showers
likely late. waves 2 feet or less. 
.tonight...southwest winds 5 to 15 knots becoming west. showers
likely early, then a chance of showers late in the evening.
patchy fog after midnight. waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots. patchy fog in the morning.
waves 2 feet or less. 
.sunday night...south winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.monday...southeast winds 5 to 15 knots becoming south. a chance
of showers monday night. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers during the day, then showers likely
with a chance of thunderstorms tuesday night. waves 1 to 3 feet
building to 3 to 5 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west.
showers likely with a chance of thunderstorms during the day.
waves 2 to 4 feet building to 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 160802
glflo 
expires:202605161500;;643760

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat may 16 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 29.1 inch low well to the north over hudson bay will 
swing a warm front across the lower great lakes today, with an 
attendant cold front approaching and stalling near the lake tonight. 
a 29.4 inch low over the central plains on sunday will weaken to 
29.7 inches as it moves northeast into the upper great lakes sunday 
night while swinging an attendant warm front across the lake. 
another area of low pressure will develop over the central plains 
monday. the low will weaken from 29.4 inches to 29.6 inches as it 
tracks northeast to the upper great lakes monday night into tuesday 
morning, then to near the southern tip of james bay on tuesday. a 
cold front from this low will cross the lake wednesday.


loz062-161500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat may 16 2026

.today...south winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers this afternoon. waves 1 to 3 feet
building to 2 to 4 feet. 
.tonight...southwest winds 15 to 20 knots becoming west 5 to
15 knots. patchy fog after midnight. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.sunday...west winds 10 knots or less becoming south. patchy fog
in the morning. waves 2 feet or less. 
.sunday night...east winds 5 to 10 knots. waves 1 foot or less. 
.monday...southeast winds 5 to 10 knots becoming southwest 10 to
15 knots. a chance of showers monday night. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots. a chance of showers
during the day, then showers likely with a chance of
thunderstorms tuesday night. waves 2 to 4 feet building to 3 to
5 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. a chance of showers and thunderstorms during the
day. waves 3 to 5 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 160736
glfle 
expires:202605161415;;642929

open lake forecast for lake erie
national weather service cleveland oh
336 am edt sat may 16 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...
a warm front lifts across the lake today, before stalling across
the southern great lakes through sunday. the front lifts well to
the north sunday night into monday, before a cold front crosses
the lake from west to east late tuesday night and wednesday. 


lez162>165-161415-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
336 am edt sat may 16 2026

.today...south winds 10 to 15 knots becoming southwest. a chance
of showers with a slight chance of thunderstorms late this
morning. a chance of showers and thunderstorms this afternoon.
waves 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots. a chance of showers and
thunderstorms early, then a slight chance of showers late in the
evening. a slight chance of showers late. waves 1 to 3 feet. 
.sunday...west winds 10 knots or less becoming east. a chance of
showers in the afternoon. waves 1 foot or less. 
.sunday night...east winds 5 to 15 knots becoming south. a chance
of showers and thunderstorms in the evening. waves 2 feet or
less. 
.monday...southwest winds 15 to 20 knots becoming south 10 to
15 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots. showers likely with a
chance of thunderstorms. waves 1 to 3 feet. 
.wednesday...west winds 10 to 15 knots becoming north 15 to
20 knots. a chance of showers during the day. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 160736
glfle 
expires:202605161415;;642930

open lake forecast for lake erie
national weather service cleveland oh
336 am edt sat may 16 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...
a warm front lifts across the lake today, before stalling across
the southern great lakes through sunday. the front lifts well to
the north sunday night into monday, before a cold front crosses
the lake from west to east late tuesday night and wednesday. 


lez061-166>169-161415-
ripley to buffalo ny extending from 5nm 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-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
336 am edt sat may 16 2026

.today...south winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers late this morning. a chance of
showers with a slight chance of thunderstorms early this
afternoon, then a chance of showers and thunderstorms late. waves
1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots. a chance of showers and
thunderstorms early, then a slight chance of showers and
thunderstorms late in the evening. waves 1 to 3 feet. 
.sunday...southwest winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.sunday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.monday...south winds 10 to 15 knots. a chance of showers monday
night. waves 2 feet or less. 
.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 building
to 2 to 4 feet. 
.wednesday...southwest winds 10 to 15 knots becoming north. a
chance of showers during the day. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 160746
glfsc 
expires:202605161600;;643229

lake st clair forecast
national weather service detroit/pontiac mi
346 am edt sat may 16 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 trough, averaging 29.80 inches, tracks
through the great lakes saturday morning leading to showers and
thunderstorms. southwest winds become variable with localized
gusty winds over 30 knots possible in any thunderstorm activity.
a shallow cold front stalls south of lake huron saturday night
before high pressure arrives sunday.


lcz460-161600-
lake st clair-
346 am edt sat may 16 2026

.today...southwest winds 10 to 15 knots. light showers in the
morning. a chance of light showers early in the afternoon. waves 1
to 3 feet.
.tonight...west winds 10 to 15 knots diminishing to 5 to 10 knots by
midnight...then veering to the north early in the morning. partly
cloudy. waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots veering to the east in the
late morning and afternoon. partly sunny. waves 2 feet or less.
.sunday night...southeast winds 10 to 15 knots. partly cloudy. waves
2 feet or less.
.monday...south winds 15 to 20 knots increasing to 20 to 25 knots in
the afternoon...then diminishing to 15 to 20 knots in the evening.
mostly sunny becoming partly cloudy. waves 1 to 3 feet.
.tuesday...southwest winds 20 to 25 knots with gusts to 30 knots.
partly cloudy. showers likely and a chance of thunderstorms. waves 2
to 4 feet. a small craft advisory may be needed.
.wednesday...north winds 15 to 20 knots. partly cloudy. a chance of
showers and thunderstorms. waves 1 to 3 feet.

$$

fzus63 kdtx 160745
glflh 
expires:202605161545;;643186

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 am edt sat may 16 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 trough, averaging 29.80 inches, tracks
through the great lakes saturday morning leading to showers and
thunderstorms. southwest winds become variable with localized
gusty winds over 30 knots possible in any thunderstorm activity.
a shallow cold front stalls south of lake huron saturday night
before high pressure arrives sunday.


lhz462>464-161545-
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-
345 am edt sat may 16 2026

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


$$

fzus63 kdtx 160745
glflh 
expires:202605161545;;643184

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 am edt sat may 16 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 trough, averaging 29.80 inches, tracks
through the great lakes saturday morning leading to showers and
thunderstorms. southwest winds become variable with localized
gusty winds over 30 knots possible in any thunderstorm activity.
a shallow cold front stalls south of lake huron saturday night
before high pressure arrives sunday.


lhz361-161545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
345 am edt sat may 16 2026

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


$$

fzus63 kdtx 160745
glflh 
expires:202605161545;;643185

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 am edt sat may 16 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 trough, averaging 29.80 inches, tracks
through the great lakes saturday morning leading to showers and
thunderstorms. southwest winds become variable with localized
gusty winds over 30 knots possible in any thunderstorm activity.
a shallow cold front stalls south of lake huron saturday night
before high pressure arrives sunday.


lhz362-363-161545-
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-
345 am edt sat may 16 2026

.today...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and early afternoon...then becoming southwest
10 to 15 knots late in the afternoon. a chance of showers in the
morning. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...west winds 5 to 10 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet early in the morning. 
.sunday...northwest winds 5 to 10 knots veering to the northeast
early in the afternoon. waves 1 to 3 feet. 
.sunday night...east winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. a chance of showers.
waves 1 to 3 feet building to 4 to 6 feet in the late evening and
overnight. waves occasionally around 8 feet. 
.monday...south winds 15 to 20 knots. a chance of showers late in
the morning. rain showers likely late in the afternoon. waves
5 to 7 feet. waves occasionally around 10 feet. 
.tuesday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then becoming
southwest 15 to 20 knots . showers likely early in the morning...
then a chance of showers. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.wednesday...northwest winds 15 to 20 knots. waves 6 to 9 feet.
waves occasionally around 12 feet. 


$$

fzus63 kmkx 160807
glflm 
expires:202605161530;;644182

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am cdt sat may 16 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...

a complex of thunderstorms is currently moving east over the
middle third of the lake. these storms should clear east of the
lake over the next couple of hours. 

southerly winds will then turn southwesterly today as a cold front
moves over the region stalls south of lake michigan tonight, with
wind then becoming northeasterly tonight. another area of low 
pressure around 29.6 inches is forecast to develop over the 
plains on sunday, lifting into the upper midwest into the start of
next week. as the low lifts northeast a warm front will lift
north over the lake, leading to east and southeast winds sunday,
then increasing southerly winds and additional shower and 
thunderstorm potential through monday night/tuesday. then high 
pressure looks to build in midweek behind the early week low 
pressure system.


lmz261-362-364-366-563-565-567-868-161530-
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-
307 am cdt sat may 16 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.tonight...west winds 10 to 20 kt veering to northeast. waves
1 to 3 ft. 
.sunday...northeast winds 10 to 20 kt becoming east 15 to 25 kt.
chance of rain showers in the afternoon. waves 2 to 4 ft. 
.sunday night...southeast winds to 30 kt becoming south. chance
of showers in the evening, then showers likely overnight. waves
3 to 5 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday...south winds to 30 kt. chance of showers in the morning,
then showers likely in the afternoon. waves 6 to 9 ft
occasionally to 12 ft. 
.monday night...south winds to 30 kt. showers likely with a
chance of thunderstorms. waves 6 to 9 ft occasionally to 12 ft. 
.tuesday...south gales to 35 kt becoming southwest. chance of
showers. waves 7 to 10 ft occasionally to 13 ft. 
.wednesday...northwest winds to 30 kt becoming north 15 to 25 kt.
waves 3 to 5 ft.  

$$

fzus63 kmkx 160807
glflm 
expires:202605161530;;644183

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am cdt sat may 16 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...

a complex of thunderstorms is currently moving east over the
middle third of the lake. these storms should clear east of the
lake over the next couple of hours. 

southerly winds will then turn southwesterly today as a cold front
moves over the region stalls south of lake michigan tonight, with
wind then becoming northeasterly tonight. another area of low 
pressure around 29.6 inches is forecast to develop over the 
plains on sunday, lifting into the upper midwest into the start of
next week. as the low lifts northeast a warm front will lift
north over the lake, leading to east and southeast winds sunday,
then increasing southerly winds and additional shower and 
thunderstorm potential through monday night/tuesday. then high 
pressure looks to build in midweek behind the early week low 
pressure system.


lmz080-669-671-673-675-777-779-870-872-874-876-878-161530-
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-
307 am cdt sat may 16 2026

sheboygan wi to pentwater mi south...

.today...south winds 10 to 20 kt becoming southwest. chance of
rain showers this morning. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.tonight...south winds 10 to 15 kt backing to east 10 to 20 kt.
slight chance of rain showers overnight. waves 1 to 3 ft. 
.sunday...east winds 10 to 20 kt becoming southeast. chance of
rain showers. waves 2 to 4 ft. 
.sunday night...southeast winds 15 to 25 kt becoming south. waves
4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally
to 10 ft. 
.monday...south winds to 30 kt. chance of showers in the morning,
then showers likely in the afternoon. waves 6 to 9 ft
occasionally to 12 ft. 
.monday night...south winds to 30 kt. showers likely with a
chance of thunderstorms. waves 6 to 9 ft occasionally to 12 ft. 
.tuesday...south winds to 30 kt becoming southwest. chance of
showers. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday...northwest winds 10 to 20 kt becoming north 15 to
25 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643683

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat may 16 2026

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

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

.synopsis... 

a 29.6 inch trough over the lake will shift east today as the 
associated 29.2 inch low moves from hudson bay to northern quebec. 
in its wake, ridging of 30.1 inches will build over the lake from 
northern ontario tonight into sunday. this is followed by another 
29.7 inch trough extending northeast toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz267-162000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sat may 16 2026

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

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643678

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat may 16 2026

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

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

.synopsis... 

a 29.6 inch trough over the lake will shift east today as the 
associated 29.2 inch low moves from hudson bay to northern quebec. 
in its wake, ridging of 30.1 inches will build over the lake from 
northern ontario tonight into sunday. this is followed by another 
29.7 inch trough extending northeast toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat may 16 2026 /301 am cdt sat may 16 2026/

.early this morning...west winds 10 to 20 knots. waves 1 to
3 feet. 
.today...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon, then becoming northwest 10 to 20 knots late.
waves subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight, then becoming east 10 to 20 knots late. waves building
to 2 to 4 feet. 
.sunday...east winds 20 to 30 knots backing northeast in the
afternoon, then increasing to 30 knots with a few gale force
gusts to 35 knots possible late. a slight chance of rain showers
through early afternoon, then rain showers by mid afternoon.
waves building to 8 to 11 feet occasionally to 14 feet. 
.sunday night...northeast gales to 35 knots diminishing to 15 to
25 knots after midnight. rain showers and a chance of
thunderstorms. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. rain showers likely. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.monday night...northeast winds 20 to 30 knots increasing to
gales to 35 knots after midnight. rain showers. waves building to
10 to 14 feet occasionally to 18 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots. rain showers likely. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643679

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat may 16 2026

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

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

.synopsis... 

a 29.6 inch trough over the lake will shift east today as the 
associated 29.2 inch low moves from hudson bay to northern quebec. 
in its wake, ridging of 30.1 inches will build over the lake from 
northern ontario tonight into sunday. this is followed by another 
29.7 inch trough extending northeast toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz263-162000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt sat may 16 2026

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

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643680

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat may 16 2026

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

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

.synopsis... 

a 29.6 inch trough over the lake will shift east today as the 
associated 29.2 inch low moves from hudson bay to northern quebec. 
in its wake, ridging of 30.1 inches will build over the lake from 
northern ontario tonight into sunday. this is followed by another 
29.7 inch trough extending northeast toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz264-162000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sat may 16 2026

.early this morning...west winds 5 to 15 knots. waves 3 to 5 feet
occasionally to 7 feet subsiding to 2 to 4 feet. 
.today...west winds 10 to 20 knots veering northwest late. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tonight...north winds 5 to 15 knots veering northeast late.
waves subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of rain showers by mid afternoon. waves building to 2 to
4 feet. 
.sunday night...east winds 15 to 25 knots. rain showers and a
chance of thunderstorms. waves building to 5 to 8 feet
occasionally to 10 feet. 
.monday...northeast winds 5 to 15 knots becoming north 15 to
25 knots by mid afternoon. rain showers likely and a chance of
thunderstorms. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.monday night...northeast winds 20 to 30 knots. rain showers and
a chance of thunderstorms. waves building to 8 to 11 feet
occasionally to 14 feet. 
.tuesday...north winds 20 to 30 knots backing northwest. rain
showers. waves subsiding to 7 to 10 feet occasionally to 13 feet,
then building to 9 to 12 feet occasionally to 15 feet. 
.wednesday...northwest winds 20 to 30 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643681

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat may 16 2026

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

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

.synopsis... 

a 29.6 inch trough over the lake will shift east today as the 
associated 29.2 inch low moves from hudson bay to northern quebec. 
in its wake, ridging of 30.1 inches will build over the lake from 
northern ontario tonight into sunday. this is followed by another 
29.7 inch trough extending northeast toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz265-162000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sat may 16 2026

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

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643682

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat may 16 2026

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

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

.synopsis... 

a 29.6 inch trough over the lake will shift east today as the 
associated 29.2 inch low moves from hudson bay to northern quebec. 
in its wake, ridging of 30.1 inches will build over the lake from 
northern ontario tonight into sunday. this is followed by another 
29.7 inch trough extending northeast toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz266-162000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt sat may 16 2026

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

$$