fzus61 kbuf 200802
glflo 
expires:202606201500;;059404

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jun 20 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...an unseasonably strong 29.2 inch low will linger over 
the canadian maritimes through this evening before exiting eastward 
over the atlantic. a weak ridge of high pressure averaging 29.9 
inches will then build over the great lakes tonight through sunday. 
a 29.7 inch low is then forecast to move south of the lower great 
lakes monday and monday night, before moving off the new england 
coast by tuesday. a broad area of high pressure averaging 30.1 
inches will advance over the eastern great lakes region wednesday 
and thursday of next week.


loz062-201500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat jun 20 2026

.today...west winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.tonight...west winds 5 to 10 knots. a chance of showers late.
waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.sunday night...southwest winds less than 10 knots becoming
southeast. a chance of showers overnight. waves 1 foot or less. 
.monday...east winds 5 to 15 knots becoming northwest. showers
likely during the day, then a chance of showers monday night.
waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...west winds less than 10 knots becoming southeast. a
chance of showers wednesday night. waves 1 foot or less. 

$$

fzus61 kbuf 200802
glflo 
expires:202606201500;;059405

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jun 20 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...an unseasonably strong 29.2 inch low will linger over 
the canadian maritimes through this evening before exiting eastward 
over the atlantic. a weak ridge of high pressure averaging 29.9 
inches will then build over the great lakes tonight through sunday. 
a 29.7 inch low is then forecast to move south of the lower great 
lakes monday and monday night, before moving off the new england 
coast by tuesday. a broad area of high pressure averaging 30.1 
inches will advance over the eastern great lakes region wednesday 
and thursday of next week.


loz063>065-201500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat jun 20 2026

.today...west winds 15 to 20 knots. waves 3 to 6 feet. 
.tonight...west winds 5 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...west winds 10 knots or less becoming south. a
chance of showers overnight. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots becoming northwest.
showers likely. waves 2 feet or less. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.wednesday...west winds 10 knots or less becoming south. a chance
of showers wednesday night. waves 1 foot or less. 

$$

fzus61 kcle 200755
glfle 
expires:202606201415;;059094

open lake forecast for lake erie
national weather service cleveland oh
355 am edt sat jun 20 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...
weak low pressure 29.90 inches crosses lake erie this afternoon, 
dragging a cold front across the lake. high pressure 30.00 inches briefly
builds over the lake tonight and sunday before another low 
pressure system 29.60 inches moves northeast into the ohio valley 
sunday night and into the mid atlantic by monday afternoon. this 
will drag another cold front across the lake monday. a ridge 
averaging 30.10 inches builds over the region tuesday through 
wednesday.


lez162>164-201415-
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-
355 am edt sat jun 20 2026

.today...west winds 10 to 15 knots. isolated showers this
morning. waves 1 to 2 feet. 
.tonight...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.sunday...northwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.sunday night...southeast winds 5 to 15 knots becoming east and
increasing to 15 to 25 knots. rain. waves 2 feet or less building
to 3 to 5 feet. 
.monday...northeast winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. a chance of showers during the
day. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tuesday...north winds 10 knots or less becoming northwest. waves
2 feet or less. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200755
glfle 
expires:202606201415;;059095

open lake forecast for lake erie
national weather service cleveland oh
355 am edt sat jun 20 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...
weak low pressure 29.90 inches crosses lake erie this afternoon, 
dragging a cold front across the lake. high pressure 30.00 inches briefly
builds over the lake tonight and sunday before another low 
pressure system 29.60 inches moves northeast into the ohio valley 
sunday night and into the mid atlantic by monday afternoon. this 
will drag another cold front across the lake monday. a ridge 
averaging 30.10 inches builds over the region tuesday through 
wednesday.


lez165>167-201415-
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-
355 am edt sat jun 20 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200755
glfle 
expires:202606201415;;059096

open lake forecast for lake erie
national weather service cleveland oh
355 am edt sat jun 20 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...
weak low pressure 29.90 inches crosses lake erie this afternoon, 
dragging a cold front across the lake. high pressure 30.00 inches briefly
builds over the lake tonight and sunday before another low 
pressure system 29.60 inches moves northeast into the ohio valley 
sunday night and into the mid atlantic by monday afternoon. this 
will drag another cold front across the lake monday. a ridge 
averaging 30.10 inches builds over the region tuesday through 
wednesday.


lez061-168-169-201415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
355 am edt sat jun 20 2026

.today...west winds 5 to 10 knots. isolated showers. waves 1 to
2 feet. 
.tonight...west winds 5 to 10 knots. a slight chance of showers
and thunderstorms through the early overnight. waves 1 to 2 feet.
.sunday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday night...southwest winds 10 knots or less becoming east
and increasing to 15 to 20 knots overnight. a chance of rain in
the evening, then rain likely overnight. waves 2 feet or less. 
.monday...east winds 15 to 20 knots becoming north 10 to
15 knots. showers likely during the day. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.tuesday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.wednesday...northwest winds 10 knots or less becoming south. a
chance of showers and thunderstorms wednesday night. waves 1 foot
or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 200755
glfsc 
expires:202606201600;;059092

lake st clair forecast
national weather service detroit/pontiac mi
355 am edt sat jun 20 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...a ridge of high pressure, 29.90 inches, builds in
through the morning which will support lighter winds. the next
low pressure system, 29.60 inches, will arrive late tomorrow into
monday morning, bringing renewed rain and thunderstorm chances
along with elevated winds speeds across the southern great lakes.


lcz460-201600-
lake st clair-
355 am edt sat jun 20 2026

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

$$

fzus63 kdtx 200753
glflh 
expires:202606201600;;059049

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat jun 20 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...a ridge of high pressure, 29.90 inches, builds in
through the morning which will support lighter winds. the next
low pressure system, 29.60 inches, will arrive late tomorrow into
monday morning, bringing renewed rain and thunderstorm chances
along with elevated winds speeds across the southern great lakes.


lhz462>464-201600-
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-
353 am edt sat jun 20 2026

.today...west winds 5 to 10 knots early in the morning becoming
light and variable. a chance of showers. waves 2 feet or less.\
.tonight...light and variable winds. waves 2 feet or less. 
.sunday...light and variable winds. waves 2 feet or less. 
.sunday night...east winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.monday...northeast winds 5 to 10 knots becoming north 10 to
15 knots. waves 2 to 4 feet. 
.tuesday...north winds 5 to 10 knots early in the morning
becoming light and variable. waves 1 to 3 feet. 
.wednesday...light and variable winds becoming northeast 5 to
10 knots . a chance of showers . waves 2 feet or less. 


$$

fzus63 kdtx 200753
glflh 
expires:202606201600;;059048

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat jun 20 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...a ridge of high pressure, 29.90 inches, builds in
through the morning which will support lighter winds. the next
low pressure system, 29.60 inches, will arrive late tomorrow into
monday morning, bringing renewed rain and thunderstorm chances
along with elevated winds speeds across the southern great lakes.


lhz362-363-201600-
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-
353 am edt sat jun 20 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds becoming west 5 to 10 knots
after midnight. waves 2 feet or less. 
.sunday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.sunday night...light and variable winds. waves 2 feet or less. 
.monday...northeast winds 5 to 10 knots becoming northwest late
in the afternoon. waves 1 to 3 feet. 
.tuesday...north winds 5 to 10 knots early in the morning
becoming light and variable. waves 1 to 3 feet. 
.wednesday...light and variable winds. a chance of showers by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 200753
glflh 
expires:202606201600;;059047

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat jun 20 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...a ridge of high pressure, 29.90 inches, builds in
through the morning which will support lighter winds. the next
low pressure system, 29.60 inches, will arrive late tomorrow into
monday morning, bringing renewed rain and thunderstorm chances
along with elevated winds speeds across the southern great lakes.


lhz361-201600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
353 am edt sat jun 20 2026

.today...light and variable winds becoming west 5 to 10 knots in
the afternoon. waves 2 feet or less. 
.tonight...northwest winds 5 to 10 knots. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...west winds 5 to 10 knots early in the evening
becoming light and variable...then becoming north 5 to 10 knots
after midnight. waves 2 feet or less. 
.monday...northwest winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 1 to 3 feet. 
.tuesday...northwest winds 5 to 10 knots backing to the west
early in the evening...then veering to the northwest by midnight.
waves 2 feet or less. 
.wednesday...light and variable winds becoming east 5 to 10 knots
early in the evening...then becoming light and variable by
midnight. a chance of showers . waves 2 feet or less. 


$$

fzus63 kmkx 200804
glflm 
expires:202606201515;;059605

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt sat jun 20 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 around 29.8 inches will crosses northern portions of
the lake through the predawn hours this morning with nearly calm 
winds, with southwest to west winds developing further to the 
south. generally light winds are expected today as high pressure 
around 30.0 inches moves through the day. then another low 
pressure around 29.5 inches should track eastward from the central
great plains on sunday, reaching central il early sunday evening,
then into oh by monday. east winds overspread lake michigan 
sunday, becoming gusty over southern portions of the lake and 
turning northeast later sunday into sunday night. winds turn north
and remain gusty into monday, particularly over southern portions
of the lake. at this time, winds look to remain below gale force 
over southern portions of the lake. lighter winds return tuesday 
and wednesday, as high pressure around 30.1 inches builds into the
region.


lmz261-362-364-366-563-565-567-868-201515-
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-
304 am cdt sat jun 20 2026

sheboygan wi to pentwater mi north...

.today...northwest winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.tonight...west winds 10 to 15 kt veering to north. waves 1 ft or
less. 
.sunday...north winds less than 10 kt becoming northeast 10 to
15 kt. waves nearly calm. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
1 to 2 ft building to 2 to 4 ft. 
.monday...north winds 15 to 25 kt increasing to 30 kt. waves 3 to
5 ft. 
.monday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.tuesday...north winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 2 ft. 
.wednesday...southeast winds 10 to 15 kt becoming south 10 to
20 kt. chance of showers. waves 1 to 2 ft.  

$$

fzus63 kmkx 200804
glflm 
expires:202606201515;;059606

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt sat jun 20 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 around 29.8 inches will crosses northern portions of
the lake through the predawn hours this morning with nearly calm 
winds, with southwest to west winds developing further to the 
south. generally light winds are expected today as high pressure 
around 30.0 inches moves through the day. then another low 
pressure around 29.5 inches should track eastward from the central
great plains on sunday, reaching central il early sunday evening,
then into oh by monday. east winds overspread lake michigan 
sunday, becoming gusty over southern portions of the lake and 
turning northeast later sunday into sunday night. winds turn north
and remain gusty into monday, particularly over southern portions
of the lake. at this time, winds look to remain below gale force 
over southern portions of the lake. lighter winds return tuesday 
and wednesday, as high pressure around 30.1 inches builds into the
region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-201515-
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-
304 am cdt sat jun 20 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 20 kt becoming south 10 to 15 kt. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.tonight...southwest winds 5 to 10 kt veering to northwest. waves
1 to 2 ft. 
.sunday...northeast winds less than 10 kt becoming east late in
the morning, then becoming 10 to 15 kt early in the afternoon
becoming northeast 15 to 25 kt late. chance of showers in the
afternoon. waves 1 ft or less building to 1 to 3 ft. 
.sunday night...northeast winds to 30 kt diminishing to 15 to
25 kt. chance of showers. waves 4 to 7 ft occasionally to 9 ft. 
.monday...north winds 15 to 25 kt increasing to 30 kt. waves 4 to
7 ft occasionally to 9 ft. 
.monday night...north winds to 30 kt diminishing to 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. chance of showers. waves 1 to 2 ft.  

$$

fzus63 kmqt 200801
glfls 
expires:202606202000;;059276

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jun 20 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... 

this morning, lake superior is between a 29.3 inch low over the gulf 
of st. lawrence and broad 30.0 inch high pressure spanning much of 
the northern plains southeast into kentucky/tennessee. the high 
weakens to 29.9 inches as it moves over the upper great lakes 
tonight. the high builds slowly through sunday, reaching 30.1 inches 
monday morning. the high builds further to 30.2 inches tuesday 
morning as weak 30.0 inch low pressure forms over the dakotas that 
evening. this low tracks to wisconsin wednesday night as broad high 
pressure over much of canada weakens to 30.0 to 30.1 inches. 




lsz266-202000-
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 am edt sat jun 20 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots veering northwest in the
afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...northwest winds 10 to 20 knots. waves calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots backing southeast. waves
calm to 2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202606202000;;059277

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jun 20 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... 

this morning, lake superior is between a 29.3 inch low over the gulf 
of st. lawrence and broad 30.0 inch high pressure spanning much of 
the northern plains southeast into kentucky/tennessee. the high 
weakens to 29.9 inches as it moves over the upper great lakes 
tonight. the high builds slowly through sunday, reaching 30.1 inches 
monday morning. the high builds further to 30.2 inches tuesday 
morning as weak 30.0 inch low pressure forms over the dakotas that 
evening. this low tracks to wisconsin wednesday night as broad high 
pressure over much of canada weakens to 30.0 to 30.1 inches. 




lsz267-202000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sat jun 20 2026

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest in the
afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots. waves building to 1 to
3 feet. 
.monday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202606202000;;059272

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jun 20 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... 

this morning, lake superior is between a 29.3 inch low over the gulf 
of st. lawrence and broad 30.0 inch high pressure spanning much of 
the northern plains southeast into kentucky/tennessee. the high 
weakens to 29.9 inches as it moves over the upper great lakes 
tonight. the high builds slowly through sunday, reaching 30.1 inches 
monday morning. the high builds further to 30.2 inches tuesday 
morning as weak 30.0 inch low pressure forms over the dakotas that 
evening. this low tracks to wisconsin wednesday night as broad high 
pressure over much of canada weakens to 30.0 to 30.1 inches. 




lsz162-202000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat jun 20 2026 /300 am cdt sat jun 20 2026/

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots backing southwest in the
afternoon. a chance of rain showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. waves
calm to 2 feet. 
.sunday...north winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon, then backing east late. waves calm to
2 feet. 
.sunday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming north 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...north winds less than 10 knots. waves calm to
2 feet. 
.tuesday...northeast winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots becoming north less
than 10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202606202000;;059274

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jun 20 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... 

this morning, lake superior is between a 29.3 inch low over the gulf 
of st. lawrence and broad 30.0 inch high pressure spanning much of 
the northern plains southeast into kentucky/tennessee. the high 
weakens to 29.9 inches as it moves over the upper great lakes 
tonight. the high builds slowly through sunday, reaching 30.1 inches 
monday morning. the high builds further to 30.2 inches tuesday 
morning as weak 30.0 inch low pressure forms over the dakotas that 
evening. this low tracks to wisconsin wednesday night as broad high 
pressure over much of canada weakens to 30.0 to 30.1 inches. 




lsz264-202000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sat jun 20 2026

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...west winds 5 to 15 knots. a slight chance of showers.
waves calm to 2 feet. 
.tonight...west winds less than 10 knots becoming northwest 5 to
15 knots late. waves calm to 2 feet. 
.sunday...west winds less than 10 knots. waves calm to 2 feet. 
.sunday night...northwest winds less than 10 knots becoming north
5 to 15 knots after midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds less than 10 knots backing southeast. waves
calm to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming north less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202606202000;;059273

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jun 20 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... 

this morning, lake superior is between a 29.3 inch low over the gulf 
of st. lawrence and broad 30.0 inch high pressure spanning much of 
the northern plains southeast into kentucky/tennessee. the high 
weakens to 29.9 inches as it moves over the upper great lakes 
tonight. the high builds slowly through sunday, reaching 30.1 inches 
monday morning. the high builds further to 30.2 inches tuesday 
morning as weak 30.0 inch low pressure forms over the dakotas that 
evening. this low tracks to wisconsin wednesday night as broad high 
pressure over much of canada weakens to 30.0 to 30.1 inches. 




lsz263-202000-
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 am edt sat jun 20 2026

.early this morning...west winds less than 10 knots. waves calm
to 2 feet. 
.today...west winds 5 to 15 knots. a slight chance of rain
showers. a slight chance of thunderstorms by mid afternoon. waves
calm to 2 feet. 
.tonight...west winds less than 10 knots veering north late.
waves calm to 2 feet. 
.sunday...north winds less than 10 knots veering south in the
afternoon, then backing northeast late. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing east. a chance
of rain showers. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202606202000;;059275

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jun 20 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... 

this morning, lake superior is between a 29.3 inch low over the gulf 
of st. lawrence and broad 30.0 inch high pressure spanning much of 
the northern plains southeast into kentucky/tennessee. the high 
weakens to 29.9 inches as it moves over the upper great lakes 
tonight. the high builds slowly through sunday, reaching 30.1 inches 
monday morning. the high builds further to 30.2 inches tuesday 
morning as weak 30.0 inch low pressure forms over the dakotas that 
evening. this low tracks to wisconsin wednesday night as broad high 
pressure over much of canada weakens to 30.0 to 30.1 inches. 




lsz265-202000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sat jun 20 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots veering north in the afternoon,
then veering northeast late. a slight chance of showers. waves
calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west after midnight.
waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northeast in the
afternoon, then veering east late. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots backing northwest
after midnight. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. a chance
of showers. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$