fzus61 kbuf 042003
glflo 
expires:202606050300;;183703

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu jun 4 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 30.2 inch high along the eastern seaboard tonight will 
drift off the southeast coast friday. a weak cold front will settle 
south across the lower great lakes saturday through saturday night. 
another 30.2 inch high over quebec sunday will build southeast into 
new england monday, then remain near, or just off the east coast 
through wednesday.


loz062-050300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt thu jun 4 2026

.tonight...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.friday...southwest winds 5 to 15 knots. waves 1 foot or less
building to 1 to 3 feet. 
.friday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. a chance of showers in the evening, then showers
overnight. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 20 knots becoming west. showers
in the morning, then showers likely with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet building to
2 to 4 feet. 
.saturday night...west winds 5 to 15 knots. showers likely with a
chance of thunderstorms in the evening. waves 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming east. waves 1 foot or
less. 
.monday...east winds 5 to 15 knots. waves 1 to 2 feet. 
.tuesday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 042003
glflo 
expires:202606050300;;183704

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu jun 4 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 30.2 inch high along the eastern seaboard tonight will 
drift off the southeast coast friday. a weak cold front will settle 
south across the lower great lakes saturday through saturday night. 
another 30.2 inch high over quebec sunday will build southeast into 
new england monday, then remain near, or just off the east coast 
through wednesday.


loz063>065-050300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt thu jun 4 2026

.tonight...southwest winds 5 to 10 knots. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots becoming south. waves
1 foot or less. 
.friday night...south winds 5 to 15 knots. showers likely
overnight. waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. showers likely. waves 1 to 3 feet building to 2 to
4 feet. 
.saturday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. showers likely in the evening, then a chance of showers
overnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming northeast. waves
2 feet or less. 
.monday...northeast winds 5 to 10 knots becoming southeast. waves
2 feet or less. 
.tuesday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041944
glfle 
expires:202606050215;;183090

open lake forecast for lake erie
national weather service cleveland oh
344 pm edt thu jun 4 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 ridging averaging 30.10 inches exits slowly
southeastward before a cold front sweeps southeastward across lake
erie saturday evening through saturday night. behind the front,
another ridge averaging 30.10 inches affects the lake erie region
through tuesday as the embedded high pressure center moves from 
near the northern great lakes toward the mid-atlantic states.


lez164>166-050215-
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-
344 pm edt thu jun 4 2026

.tonight...southeast winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.friday...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.friday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. showers likely with a chance of thunderstorms
overnight. waves 2 to 4 feet building to 3 to 5 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers in the morning, then a chance of
showers and thunderstorms in the afternoon. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 2 feet or less. 
.sunday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...east winds 5 to 10 knots becoming southeast 10 to
15 knots. waves 1 to 3 feet. 
.tuesday...southeast winds 5 to 15 knots becoming south. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041944
glfle 
expires:202606050215;;183091

open lake forecast for lake erie
national weather service cleveland oh
344 pm edt thu jun 4 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 ridging averaging 30.10 inches exits slowly
southeastward before a cold front sweeps southeastward across lake
erie saturday evening through saturday night. behind the front,
another ridge averaging 30.10 inches affects the lake erie region
through tuesday as the embedded high pressure center moves from 
near the northern great lakes toward the mid-atlantic states.


lez061-167>169-050215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
344 pm edt thu jun 4 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041944
glfle 
expires:202606050215;;183089

open lake forecast for lake erie
national weather service cleveland oh
344 pm edt thu jun 4 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 ridging averaging 30.10 inches exits slowly
southeastward before a cold front sweeps southeastward across lake
erie saturday evening through saturday night. behind the front,
another ridge averaging 30.10 inches affects the lake erie region
through tuesday as the embedded high pressure center moves from 
near the northern great lakes toward the mid-atlantic states.


lez162-163-050215-
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-
344 pm edt thu jun 4 2026

.tonight...southeast winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.friday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.friday night...southwest winds 15 to 20 knots. a chance of
showers in the evening, then showers likely with a chance of
thunderstorms overnight. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers in the morning, then showers likely
with a chance of thunderstorms in the afternoon. waves 1 to
3 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest. a
chance of thunderstorms in the evening. waves 2 feet or less. 
.sunday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.monday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday...southeast winds 5 to 10 knots becoming south. a chance
of showers and thunderstorms during the day. waves 2 feet or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 041955
glfsc 
expires:202606050400;;183302

lake st clair forecast
national weather service detroit/pontiac mi
355 pm edt thu jun 4 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...warm south-southwest flow will continue through
tomorrow. numerous showers and a few thunderstorms will develop
late tomorrow and tomorrow evening as a surface low tracks
through the central great lakes. a weak cold front will then sink
southward on saturday, potentially triggering scattered strong
thunderstorms in the afternoon and evening. light northeast winds
follow for saturday night and sunday with dry conditions.


lcz460-050400-
lake st clair-
355 pm edt thu jun 4 2026

.tonight...south winds 10 to 15 knots becoming southwest 5 to 10
knots after midnight. mostly clear. waves 2 feet or less.
.friday...southwest winds 5 to 10 knots increasing to 15 to 20
knots. partly sunny. waves 2 feet or less.
.friday night...southwest winds 15 to 20 knots. partly cloudy early
in the evening becoming mostly cloudy. light showers likely and a
chance of thunderstorms. waves 1 to 3 feet.
.saturday...west winds 10 to 15 knots. a chance of light showers
until late afternoon. light showers and a chance of thunderstorms
early in the afternoon. waves 2 feet or less.
.saturday night...northwest winds 5 to 10 knots veering to the north
after midnight. light showers and a chance of thunderstorms early in
the evening. waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots increasing to 10 to 15 knots
in the evening. mostly sunny becoming sunny in the afternoon
becoming mostly clear. waves 2 feet or less.
.monday...east winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.tuesday...southeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 041955
glflh 
expires:202606050400;;183298

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 pm edt thu jun 4 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...warm south-southwest flow will continue through
tomorrow. numerous showers and a few thunderstorms will develop
late tomorrow and tomorrow evening as a surface low tracks
through the central great lakes. a weak cold front will then sink
southward on saturday, potentially triggering scattered strong
thunderstorms in the afternoon and evening. light northeast winds
follow for saturday night and sunday with dry conditions.


lhz361-050400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
355 pm edt thu jun 4 2026

.tonight...east winds 5 to 15 knots in the evening becoming light
and variable...then becoming southeast 5 to 10 knots early in the
morning. waves 1 to 3 feet. 
.friday...south winds 5 to 10 knots. a chance of showers in the
morning...then showers likely in the afternoon. waves 2 feet or
less. 
.friday night...east winds 5 to 10 knots early in the evening
becoming light and variable...then becoming west 5 to 10 knots
after midnight. a chance of showers in the evening. waves 2 feet
or less. 
.saturday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. waves 2 feet or less. 
.saturday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots after midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots in the morning becoming light
and variable...then becoming southeast 5 to 10 knots late in the
evening. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots early in the evening becoming southeast 10 to
15 knots by midnight. waves 2 feet or less building to 3 to
5 feet. 
.tuesday...east winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight. waves 1 to 3 feet building to 2 to 4 feet early in
the evening...then subsiding to 1 to 3 feet by midnight. 


$$

fzus63 kdtx 041955
glflh 
expires:202606050400;;183299

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 pm edt thu jun 4 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...warm south-southwest flow will continue through
tomorrow. numerous showers and a few thunderstorms will develop
late tomorrow and tomorrow evening as a surface low tracks
through the central great lakes. a weak cold front will then sink
southward on saturday, potentially triggering scattered strong
thunderstorms in the afternoon and evening. light northeast winds
follow for saturday night and sunday with dry conditions.


lhz362-363-050400-
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-
355 pm edt thu jun 4 2026

.tonight...southeast winds 10 to 15 knots becoming south after 
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet early in the 
morning. 
.friday...south winds 10 to 15 knots. showers likely in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet in the
afternoon. 
.friday night...south winds 10 to 15 knots becoming west 5 to
10 knots after midnight. a chance of showers. waves 2 to 4 feet. 
.saturday...southwest winds 5 to 10 knots. a chance of showers.
waves 1 to 3 feet. 
.saturday night...north winds 5 to 10 knots becoming northwest
10 to 15 knots by midnight...then decreasing to 5 to 10 knots
after midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots increasing to 10 to
15 knots until early evening...then decreasing to 5 to 10 knots
by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 041955
glflh 
expires:202606050400;;183300

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 pm edt thu jun 4 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...warm south-southwest flow will continue through
tomorrow. numerous showers and a few thunderstorms will develop
late tomorrow and tomorrow evening as a surface low tracks
through the central great lakes. a weak cold front will then sink
southward on saturday, potentially triggering scattered strong
thunderstorms in the afternoon and evening. light northeast winds
follow for saturday night and sunday with dry conditions.


lhz462>464-050400-
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-
355 pm edt thu jun 4 2026

.tonight...southeast winds 5 to 10 knots veering to the south
after midnight. waves 2 feet or less. 
.friday...south winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet. 
.friday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots. showers and a chance of thunderstorms in the
evening. waves 1 to 3 feet building to 2 to 4 feet in the late
evening and overnight. 
.saturday...southwest winds 5 to 10 knots. a chance of showers in
the morning...then a chance of showers and thunderstorms in the
afternoon. waves 1 to 3 feet. 
.saturday night...light and variable winds becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...east winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 041953
glflm 
expires:202606050315;;183292

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt thu jun 4 2026

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

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

.synopsis...

high pressure of 30.1 inches over the southeastern us will
continue to drift east toward the atlantic into tomorrow as a low
of 29.6 inches over the central plains connects to another low of
29.7 inches over southwest ontario as a cold front between the 
two tracks east into friday. the canadian low pressure will track
east across the northern great lakes through friday bringing 
prevailing southwesterly winds to lake michigan along with shower 
and thunderstorm chances tonight through friday ahead of the cold 
front. then expect the cold front to push through the region later
friday into saturday bringing additional shower and thunderstorm 
chances along with a more northwest to westerly wind shift behind 
it into saturday. then winds weaken and become more variable as 
high pressure around 30.0 inches builds across the region later 
saturday into sunday. looking ahead to the start of next week will
bring an additional low pressure system to develop over the 
plains and bring a return of southerly winds to the upper great 
lakes.


lmz080-669-671-673-675-777-779-870-872-874-876-878-050315-
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-
253 pm cdt thu jun 4 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt. chance of showers and
thunderstorms overnight. waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
showers likely with a chance of thunderstorms. waves 3 to 5 ft. 
.friday night...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers and thunderstorms. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.saturday...southwest winds 10 to 15 kt becoming south. chance of
showers. waves 1 to 3 ft. 
.saturday night...east winds 5 to 10 kt becoming northeast. waves
1 ft or less. 
.sunday...northeast winds 5 to 10 kt becoming north 10 to 15 kt.
waves 1 ft or less. 
.sunday night...northeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.monday...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 041953
glflm 
expires:202606050315;;183291

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt thu jun 4 2026

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

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

.synopsis...

high pressure of 30.1 inches over the southeastern us will
continue to drift east toward the atlantic into tomorrow as a low
of 29.6 inches over the central plains connects to another low of
29.7 inches over southwest ontario as a cold front between the 
two tracks east into friday. the canadian low pressure will track
east across the northern great lakes through friday bringing 
prevailing southwesterly winds to lake michigan along with shower 
and thunderstorm chances tonight through friday ahead of the cold 
front. then expect the cold front to push through the region later
friday into saturday bringing additional shower and thunderstorm 
chances along with a more northwest to westerly wind shift behind 
it into saturday. then winds weaken and become more variable as 
high pressure around 30.0 inches builds across the region later 
saturday into sunday. looking ahead to the start of next week will
bring an additional low pressure system to develop over the 
plains and bring a return of southerly winds to the upper great 
lakes.


lmz261-362-364-366-563-565-567-868-050315-
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-
253 pm cdt thu jun 4 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. chance of showers and thunderstorms overnight. waves 4 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
showers likely with a chance of thunderstorms in the morning,
then chance of showers and thunderstorms in the afternoon. waves
3 to 5 ft. 
.friday night...southwest winds 10 to 20 kt becoming west 10 to
15 kt. chance of showers and thunderstorms. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.saturday...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...north winds 10 to 15 kt becoming northeast.
waves 1 to 2 ft. 
.sunday...northeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 to 2 ft. 
.sunday night...east winds 10 to 20 kt becoming southeast. waves
1 to 2 ft building to 1 to 3 ft. 
.monday...southeast winds 10 to 20 kt becoming east. waves 2 to
4 ft. 
.tuesday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 042028
glfls 
expires:202606050430;;185130

open lake forecast for lake superior
national weather service marquette mi
428 pm edt thu jun 4 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 29.7 inch low over northwest ontario is extending 29.9 inch 
troughing over the lake while 30.1 inch highs are over eastern 
hudson bay and the southern appalachian range. throughout this 
evening and friday, the low will move slowly east along the northern 
shores of lake superior while the highs weaken. by early saturday 
morning, the low will be south of james bay along the ontario/quebec 
line. as the low shifts to southern quebec saturday evening, weak 
29.9 inch ridging will be over the lake as 29.3 inch low pressure 
forms in the lee of the rockies. ridging builds to 30.0 inches 
sunday as the low weakens to 29.4 inches and moves into the western 
dakotas. by monday afternoon, lake superior will be between 29.2 
inch low pressure over saskatchewan and 30.2 inch high pressure over 
the st. lawrence seaway. the low moves to the western shores of 
hudson bay while the high shifts to the atlantic seaboard on 
tuesday. 




lsz162-050430-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
428 pm edt thu jun 4 2026 /328 pm cdt thu jun 4 2026/

.late this afternoon...east winds 5 to 15 knots. a chance of
showers and thunderstorms. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering southwest late.
a chance of showers and thunderstorms. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. a slight chance of
showers and thunderstorms through midnight. waves calm to 2 feet.
.saturday...west winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots. waves building to 1 to
3 feet. 
.sunday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves building to 2 to 4 feet, then
subsiding to calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042028
glfls 
expires:202606050430;;185131

open lake forecast for lake superior
national weather service marquette mi
428 pm edt thu jun 4 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 29.7 inch low over northwest ontario is extending 29.9 inch 
troughing over the lake while 30.1 inch highs are over eastern 
hudson bay and the southern appalachian range. throughout this 
evening and friday, the low will move slowly east along the northern 
shores of lake superior while the highs weaken. by early saturday 
morning, the low will be south of james bay along the ontario/quebec 
line. as the low shifts to southern quebec saturday evening, weak 
29.9 inch ridging will be over the lake as 29.3 inch low pressure 
forms in the lee of the rockies. ridging builds to 30.0 inches 
sunday as the low weakens to 29.4 inches and moves into the western 
dakotas. by monday afternoon, lake superior will be between 29.2 
inch low pressure over saskatchewan and 30.2 inch high pressure over 
the st. lawrence seaway. the low moves to the western shores of 
hudson bay while the high shifts to the atlantic seaboard on 
tuesday. 




lsz263-050430-
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-
428 pm edt thu jun 4 2026

.late this afternoon...east winds 5 to 15 knots. a chance of
showers and thunderstorms. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest less than
10 knots after midnight, then increasing to 5 to 15 knots late. a
chance of showers and thunderstorms. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers. a slight chance of thunderstorms by mid afternoon. waves
calm to 2 feet. 
.friday night...west winds 5 to 15 knots. a slight chance of
showers and thunderstorms through midnight. waves calm to 2 feet.
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots. waves calm to 2 feet.
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.monday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. a chance of showers. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.tuesday...northeast winds 5 to 15 knots veering east. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 042028
glfls 
expires:202606050430;;185132

open lake forecast for lake superior
national weather service marquette mi
428 pm edt thu jun 4 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 29.7 inch low over northwest ontario is extending 29.9 inch 
troughing over the lake while 30.1 inch highs are over eastern 
hudson bay and the southern appalachian range. throughout this 
evening and friday, the low will move slowly east along the northern 
shores of lake superior while the highs weaken. by early saturday 
morning, the low will be south of james bay along the ontario/quebec 
line. as the low shifts to southern quebec saturday evening, weak 
29.9 inch ridging will be over the lake as 29.3 inch low pressure 
forms in the lee of the rockies. ridging builds to 30.0 inches 
sunday as the low weakens to 29.4 inches and moves into the western 
dakotas. by monday afternoon, lake superior will be between 29.2 
inch low pressure over saskatchewan and 30.2 inch high pressure over 
the st. lawrence seaway. the low moves to the western shores of 
hudson bay while the high shifts to the atlantic seaboard on 
tuesday. 




lsz264-050430-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
428 pm edt thu jun 4 2026

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

$$

fzus63 kmqt 042028
glfls 
expires:202606050430;;185133

open lake forecast for lake superior
national weather service marquette mi
428 pm edt thu jun 4 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 29.7 inch low over northwest ontario is extending 29.9 inch 
troughing over the lake while 30.1 inch highs are over eastern 
hudson bay and the southern appalachian range. throughout this 
evening and friday, the low will move slowly east along the northern 
shores of lake superior while the highs weaken. by early saturday 
morning, the low will be south of james bay along the ontario/quebec 
line. as the low shifts to southern quebec saturday evening, weak 
29.9 inch ridging will be over the lake as 29.3 inch low pressure 
forms in the lee of the rockies. ridging builds to 30.0 inches 
sunday as the low weakens to 29.4 inches and moves into the western 
dakotas. by monday afternoon, lake superior will be between 29.2 
inch low pressure over saskatchewan and 30.2 inch high pressure over 
the st. lawrence seaway. the low moves to the western shores of 
hudson bay while the high shifts to the atlantic seaboard on 
tuesday. 




lsz265-050430-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
428 pm edt thu jun 4 2026

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

$$

fzus63 kmqt 042028
glfls 
expires:202606050430;;185134

open lake forecast for lake superior
national weather service marquette mi
428 pm edt thu jun 4 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 29.7 inch low over northwest ontario is extending 29.9 inch 
troughing over the lake while 30.1 inch highs are over eastern 
hudson bay and the southern appalachian range. throughout this 
evening and friday, the low will move slowly east along the northern 
shores of lake superior while the highs weaken. by early saturday 
morning, the low will be south of james bay along the ontario/quebec 
line. as the low shifts to southern quebec saturday evening, weak 
29.9 inch ridging will be over the lake as 29.3 inch low pressure 
forms in the lee of the rockies. ridging builds to 30.0 inches 
sunday as the low weakens to 29.4 inches and moves into the western 
dakotas. by monday afternoon, lake superior will be between 29.2 
inch low pressure over saskatchewan and 30.2 inch high pressure over 
the st. lawrence seaway. the low moves to the western shores of 
hudson bay while the high shifts to the atlantic seaboard on 
tuesday. 




lsz266-050430-
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-
428 pm edt thu jun 4 2026

.late this afternoon...south winds 5 to 15 knots. a slight chance
of showers. waves 1 to 3 feet. 
.tonight...south winds 5 to 15 knots. a chance of showers and a
slight chance of thunderstorms. waves building to 2 to 4 feet,
then subsiding to calm to 2 feet. 
.friday...south winds 5 to 15 knots. a chance of showers. a
slight chance of thunderstorms by mid afternoon. waves calm to
2 feet. 
.friday night...south winds 5 to 15 knots veering west after
midnight, then veering northwest late. a slight chance of showers
and thunderstorms. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots. waves building to
1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 042028
glfls 
expires:202606050430;;185135

open lake forecast for lake superior
national weather service marquette mi
428 pm edt thu jun 4 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 29.7 inch low over northwest ontario is extending 29.9 inch 
troughing over the lake while 30.1 inch highs are over eastern 
hudson bay and the southern appalachian range. throughout this 
evening and friday, the low will move slowly east along the northern 
shores of lake superior while the highs weaken. by early saturday 
morning, the low will be south of james bay along the ontario/quebec 
line. as the low shifts to southern quebec saturday evening, weak 
29.9 inch ridging will be over the lake as 29.3 inch low pressure 
forms in the lee of the rockies. ridging builds to 30.0 inches 
sunday as the low weakens to 29.4 inches and moves into the western 
dakotas. by monday afternoon, lake superior will be between 29.2 
inch low pressure over saskatchewan and 30.2 inch high pressure over 
the st. lawrence seaway. the low moves to the western shores of 
hudson bay while the high shifts to the atlantic seaboard on 
tuesday. 




lsz267-050430-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
428 pm edt thu jun 4 2026

.late this afternoon...south winds 10 to 20 knots. a slight
chance of showers. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots. a chance of showers. a
slight chance of thunderstorms after midnight. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.friday...south winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. a slight chance of showers. waves calm to
2 feet. 
.friday night...southwest winds 5 to 15 knots veering west late.
a slight chance of rain showers. a slight chance of thunderstorms
after midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 

$$