fzus61 kbuf 271403
glflo 
expires:202605272100;;734816

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt wed may 27 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 cold front associated with a 29.8 inch low over new 
england will drop south across the lake this morning. a 30.2 inch 
high over ontario will expand southeastward across the lower great 
lakes thursday and thursday night, before settling into the ohio 
valley friday. a 29.6 inch low will then make its way southeastward 
across quebec friday and new england friday night and saturday, with 
its trailing cold front crossing the lake late friday or friday 
night. another 30.2 inch high is then forecast to build across the 
great lakes later saturday through sunday.


loz063>065-272100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt wed may 27 2026

.this afternoon...northwest winds 5 to 15 knots becoming west.
waves 1 to 2 feet. 
.tonight...west winds 5 to 15 knots becoming north. waves 2 feet
or less. 
.thursday...north winds 5 to 15 knots becoming west. waves 2 feet
or less. 
.thursday night...west winds 5 to 10 knots. waves 2 feet or less.
.friday...west winds 15 to 20 knots becoming northwest. a chance
of showers friday night. waves 1 to 3 feet building to 3 to
6 feet. 
.saturday...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 3 to 5 feet subsiding to 1 foot or less. 
.sunday...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 

$$

fzus61 kbuf 271403
glflo 
expires:202605272100;;734815

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt wed may 27 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 cold front associated with a 29.8 inch low over new 
england will drop south across the lake this morning. a 30.2 inch 
high over ontario will expand southeastward across the lower great 
lakes thursday and thursday night, before settling into the ohio 
valley friday. a 29.6 inch low will then make its way southeastward 
across quebec friday and new england friday night and saturday, with 
its trailing cold front crossing the lake late friday or friday 
night. another 30.2 inch high is then forecast to build across the 
great lakes later saturday through sunday.


loz062-272100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt wed may 27 2026

.this afternoon...west winds 5 to 10 knots. waves 1 foot or less. 
.tonight...west winds 10 to 15 knots becoming north. waves 2 feet
or less. 
.thursday...north winds 5 to 10 knots becoming west. waves 2 feet
or less. 
.thursday night...west winds 5 to 10 knots. waves 1 to 2 feet. 
.friday...west winds 10 to 15 knots becoming north 15 to
20 knots. waves 1 to 2 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming northwest less
than 10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 

$$

fzus61 kcle 271356
glfle 
expires:202605280215;;734524

open lake forecast for lake erie
national weather service cleveland oh
956 am edt wed may 27 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 cold front is expected to move southward across lake erie this
afternoon into the evening. high pressure 30.20 inches builds 
into the region early thursday and persists through sunday.


lez164-165-280215-
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-
956 am edt wed may 27 2026

.tonight...northwest winds 10 knots or less becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 15 knots. waves 1 to 2 feet. 
.thursday night...north winds 10 knots or less. waves 1 foot or
less. 
.friday...light and variable winds. waves 1 foot or less. 
.friday night...west winds 5 to 15 knots becoming northeast.
waves 2 feet or less building to 2 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. waves 2 to 3 feet. 
.sunday...northeast winds 5 to 10 knots becoming west. waves
2 feet or less. 
.monday...north winds 5 to 10 knots becoming northeast. waves
1 to 2 feet. 

$$

fzus61 kcle 271356
glfle 
expires:202605280215;;734523

open lake forecast for lake erie
national weather service cleveland oh
956 am edt wed may 27 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 cold front is expected to move southward across lake erie this
afternoon into the evening. high pressure 30.20 inches builds 
into the region early thursday and persists through sunday.


lez162-163-280215-
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-
956 am edt wed may 27 2026

.tonight...north winds 10 knots or less. a slight chance of
showers this evening. waves 2 feet or less. 
.thursday...north winds 10 to 15 knots becoming northeast. waves
1 to 2 feet. 
.thursday night...northeast winds 10 knots or less. waves 1 foot
or less. 
.friday...light and variable winds becoming west 5 to 10 knots.
waves 1 foot or less. 
.friday night...west winds 5 to 15 knots becoming northeast.
waves 2 feet or less. 
.saturday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 10 knots becoming west. waves
2 feet or less. 
.monday...north winds around 10 knots becoming northeast. waves
2 feet or less. 

$$

fzus61 kcle 271356
glfle 
expires:202605280215;;734525

open lake forecast for lake erie
national weather service cleveland oh
956 am edt wed may 27 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 cold front is expected to move southward across lake erie this
afternoon into the evening. high pressure 30.20 inches builds 
into the region early thursday and persists through sunday.


lez061-166>169-280215-
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-
956 am edt wed may 27 2026

.tonight...west winds 10 knots or less becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 10 knots becoming west. waves 2 feet
or less. 
.thursday night...west winds 10 knots or less. waves 1 foot or
less. 
.friday...west winds 10 knots or less increasing to 10 to
15 knots. waves 1 foot or less building to 2 to 4 feet. 
.friday night...west winds 5 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.monday...north winds 5 to 10 knots becoming northeast. waves
2 feet or less. 

$$

fzus63 kdtx 271350
glflh 
expires:202605272200;;734385

open lake forecast for lake huron
national weather service detroit/pontiac mi
950 am edt wed may 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.30 inches, builds in from the north
offering weaker flow and mainly dry conditions for most of the
week.


lhz462>464-272200-
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-
950 am edt wed may 27 2026

.rest of today...north winds 5 to 10 knots. waves 2 feet or less.
.tonight...north winds 5 to 10 knots increasing to 10 to 15 knots
early in the morning. waves 1 to 3 feet. 
.thursday...north winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots becoming northwest 10 to
15 knots late in the afternoon. waves 2 feet or less. 
.saturday...north winds 10 to 15 knots decreasing to 5 to
10 knots by midnight. waves 2 to 4 feet. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 271350
glflh 
expires:202605272200;;734384

open lake forecast for lake huron
national weather service detroit/pontiac mi
950 am edt wed may 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.30 inches, builds in from the north
offering weaker flow and mainly dry conditions for most of the
week.


lhz361>363-272200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
950 am edt wed may 27 2026

.rest of today...north winds 5 to 10 knots late in the morning
becoming light and variable...then becoming north 5 to 10 knots
late in the afternoon. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots becoming northwest 10 to
15 knots late in the evening...then veering to the north after
midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.thursday...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.thursday night...light and variable winds becoming west 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.friday...west winds 5 to 10 knots becoming southwest 10 to
15 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.saturday...northeast winds 10 to 15 knots becoming north 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming west 10 to
15 knots. waves 2 feet or less. 


$$

fzus63 kdtx 271350
glfsc 
expires:202605272200;;734383

lake st clair forecast
national weather service detroit/pontiac mi
950 am edt wed may 27 2026

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

.synopsis...high pressure, 30.30 inches, builds in from the north
offering weaker flow and mainly dry conditions for most of the
week.


lcz460-272200-
lake st clair-
950 am edt wed may 27 2026

.rest of today...light and variable winds becoming northeast 5 to 10
knots late in the afternoon. partly sunny. waves 2 feet or less.
.tonight...northeast winds 10 to 15 knots becoming north 5 to 10
knots after midnight...then increasing to 10 to 15 knots early in
the morning. mostly clear. waves 2 feet or less.
.thursday...north winds 10 to 15 knots. sunny. waves 1 to 3 feet.
.thursday night...northeast winds 10 to 15 knots becoming light and
variable. clear. waves 2 feet or less.
.friday...light and variable winds becoming west 5 to 10 knots in
the afternoon...then becoming north 10 to 15 knots in the evening.
sunny becoming mostly clear. waves 2 feet or less.
.saturday...northeast winds 15 to 20 knots. mostly clear. waves 2
feet or less.
.sunday...east winds 10 to 15 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 270757
glflh 
expires:202605271600;;721911

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 am edt wed may 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.30 inches, builds in from the north
offering weaker flow and mainly dry conditions for most of the
week.


lhz361-271600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
357 am edt wed may 27 2026

.today...north winds 5 to 10 knots early in the morning becoming
light and variable...then becoming west 5 to 10 knots late in the
afternoon. waves 2 feet or less. 
.tonight...north winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots backing to the southwest
early in the afternoon. waves 2 feet or less. 
.thursday night...west winds 5 to 10 knots. waves 2 feet or less.
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots
late in the morning...then decreasing to 10 to 15 knots late in
the afternoon veering to the west 10 to 15 knots late in the
evening. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...northeast winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then veering
to the east early in the evening backing to the north by
midnight. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots .
waves 2 feet or less. 


$$

fzus63 kdtx 270757
glflh 
expires:202605271600;;721912

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 am edt wed may 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.30 inches, builds in from the north
offering weaker flow and mainly dry conditions for most of the
week.


lhz362-363-271600-
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-
357 am edt wed may 27 2026

.today...north winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...north winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.thursday...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the afternoon. 
.thursday night...light and variable winds becoming southwest
5 to 10 knots in the late evening and overnight. waves 2 feet or
less. 
.friday...west winds 5 to 10 knots becoming southwest 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...northeast winds 10 to 15 knots becoming north 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots increasing to 10 to
15 knots by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 271359
glflm 
expires:202605272115;;734559

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 am cdt wed may 27 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 backdoor cold front will accelerate southwestward across lake
michigan this afternoon with brisk northeast winds up to 30 kt 
developing. winds will remain north northeast through thursday, 
gradually weakening thursday night as high pressure around 30.2 
inches builds into the great lakes region. 

a brief period of west to southwest winds over northern parts of
the lake may occur friday, with lighter winds to the south, as the
high moves slowly southeast of the area. an additional backdoor 
cold front later friday night into saturday morning will allow 
for brisk north to northeast winds once again through saturday. 
winds should then weaken and remain fairly light through early 
next week, under high pressure around 30.1 inches.


lmz080-669-671-673-675-777-779-870-872-874-876-878-272115-
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-
859 am cdt wed may 27 2026

sheboygan wi to pentwater mi south...

.rest of today...north winds 5 to 10 kt increasing to 15 to
25 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.tonight...north winds 15 to 25 kt. waves 3 to 5 ft building to
5 to 8 ft occasionally to 10 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.thursday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt overnight. waves 3 to 5 ft. 
.friday...southwest winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.friday night...southeast winds 5 to 10 kt becoming east. waves
1 to 2 ft. 
.saturday...east winds 10 to 15 kt becoming northeast 10 to
20 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.sunday...east winds 5 to 10 kt backing to north 10 to 20 kt.
waves 1 to 3 ft subsiding to 1 to 2 ft.  

$$

fzus63 kmkx 271359
glflm 
expires:202605272115;;734558

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 am cdt wed may 27 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 backdoor cold front will accelerate southwestward across lake
michigan this afternoon with brisk northeast winds up to 30 kt 
developing. winds will remain north northeast through thursday, 
gradually weakening thursday night as high pressure around 30.2 
inches builds into the great lakes region. 

a brief period of west to southwest winds over northern parts of
the lake may occur friday, with lighter winds to the south, as the
high moves slowly southeast of the area. an additional backdoor 
cold front later friday night into saturday morning will allow 
for brisk north to northeast winds once again through saturday. 
winds should then weaken and remain fairly light through early 
next week, under high pressure around 30.1 inches.


lmz261-362-364-366-563-565-567-868-272115-
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-
859 am cdt wed may 27 2026

sheboygan wi to pentwater mi north...

.rest of today...north winds 5 to 10 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.tonight...north winds 15 to 25 kt becoming northeast 10 to
20 kt. waves 3 to 5 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 15 to
25 kt. waves 3 to 5 ft. 
.thursday night...northwest winds 10 to 20 kt becoming west 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.friday night...southeast winds 10 to 20 kt backing to east.
waves 1 to 3 ft. 
.saturday...east winds 10 to 20 kt becoming northeast 15 to
25 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.sunday...southwest winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 271401
glfls 
expires:202605272000;;734658

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed may 27 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... 

ridging of 30.2 inches persists over lake superior today due to a 
30.3 inch high centered over hudson bay. on thursday, this parent 
high shifts southward over the lake at 30.3 inches. the high center 
weakens to around 30.1 inches on friday as it continues its 
southerly propagation towards lower michigan, causing pressure to 
decrease to 29.9 inches over lake superior. following this, a second 
ridge pushing in from hudson bay brings 30.1 inch ridging back over 
the lake late on friday. pressure subsequently increases to 30.3 
inches by saturday midday as this second parent high over hudson bay 
propagates south. high pressure persists over lake superior through 
early next week.



lsz264-272000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt wed may 27 2026

.rest of today...northeast winds 5 to 15 knots backing north in
the afternoon. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.thursday...east winds less than 10 knots veering south late.
waves calm to 2 feet. 
.thursday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming south 5 to 15 knots
by mid afternoon. a slight chance of showers by mid afternoon.
waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves building to 1 to
3 feet. 
.saturday...east winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.sunday...west winds 5 to 15 knots veering northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202605272000;;734659

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed may 27 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... 

ridging of 30.2 inches persists over lake superior today due to a 
30.3 inch high centered over hudson bay. on thursday, this parent 
high shifts southward over the lake at 30.3 inches. the high center 
weakens to around 30.1 inches on friday as it continues its 
southerly propagation towards lower michigan, causing pressure to 
decrease to 29.9 inches over lake superior. following this, a second 
ridge pushing in from hudson bay brings 30.1 inch ridging back over 
the lake late on friday. pressure subsequently increases to 30.3 
inches by saturday midday as this second parent high over hudson bay 
propagates south. high pressure persists over lake superior through 
early next week.



lsz265-272000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt wed may 27 2026

.rest of today...north winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...north winds 10 to 20 knots becoming northeast 5 to
15 knots after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering east in the
afternoon. waves calm to 2 feet. 
.thursday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots veering north by mid
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.friday night...east winds 5 to 15 knots. waves building to 1 to
3 feet. 
.saturday...east winds 10 to 20 knots becoming south 5 to
15 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.sunday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202605272000;;734656

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed may 27 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... 

ridging of 30.2 inches persists over lake superior today due to a 
30.3 inch high centered over hudson bay. on thursday, this parent 
high shifts southward over the lake at 30.3 inches. the high center 
weakens to around 30.1 inches on friday as it continues its 
southerly propagation towards lower michigan, causing pressure to 
decrease to 29.9 inches over lake superior. following this, a second 
ridge pushing in from hudson bay brings 30.1 inch ridging back over 
the lake late on friday. pressure subsequently increases to 30.3 
inches by saturday midday as this second parent high over hudson bay 
propagates south. high pressure persists over lake superior through 
early next week.



lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt wed may 27 2026 /901 am cdt wed may 27 2026/

.rest of today...northeast winds 10 to 20 knots becoming east
15 to 25 knots in the afternoon, then backing northeast late.
waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east late.
waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. waves building to 1 to
3 feet. 
.friday night...northeast winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.saturday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202605272000;;734661

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed may 27 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... 

ridging of 30.2 inches persists over lake superior today due to a 
30.3 inch high centered over hudson bay. on thursday, this parent 
high shifts southward over the lake at 30.3 inches. the high center 
weakens to around 30.1 inches on friday as it continues its 
southerly propagation towards lower michigan, causing pressure to 
decrease to 29.9 inches over lake superior. following this, a second 
ridge pushing in from hudson bay brings 30.1 inch ridging back over 
the lake late on friday. pressure subsequently increases to 30.3 
inches by saturday midday as this second parent high over hudson bay 
propagates south. high pressure persists over lake superior through 
early next week.



lsz267-272000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt wed may 27 2026

.rest of today...north winds 5 to 15 knots becoming northwest
10 to 20 knots in the afternoon, then increasing to 15 to
25 knots late. waves calm to 2 feet building to 2 to 4 feet. 
.tonight...north winds 15 to 25 knots becoming northeast 10 to
20 knots after midnight, then backing north late. waves subsiding
to calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest in the
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots veering northwest by mid
afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots becoming east 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.saturday...east winds 10 to 20 knots becoming south 5 to
15 knots. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots becoming north 10 to 20 knots.
waves calm to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202605272000;;734660

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed may 27 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... 

ridging of 30.2 inches persists over lake superior today due to a 
30.3 inch high centered over hudson bay. on thursday, this parent 
high shifts southward over the lake at 30.3 inches. the high center 
weakens to around 30.1 inches on friday as it continues its 
southerly propagation towards lower michigan, causing pressure to 
decrease to 29.9 inches over lake superior. following this, a second 
ridge pushing in from hudson bay brings 30.1 inch ridging back over 
the lake late on friday. pressure subsequently increases to 30.3 
inches by saturday midday as this second parent high over hudson bay 
propagates south. high pressure persists over lake superior through 
early next week.



lsz266-272000-
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-
1001 am edt wed may 27 2026

.rest of today...north winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet building to 2 to
4 feet. 
.tonight...north winds 10 to 20 knots becoming northeast 5 to
15 knots after midnight, then backing north late. waves subsiding
to calm to 2 feet. 
.thursday...north winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then backing northwest late. waves
calm to 2 feet. 
.thursday night...south winds 5 to 15 knots becoming west 10 to
20 knots after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming north 5 to 15 knots
by mid afternoon. waves building to 1 to 3 feet, then subsiding
to calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots becoming east 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.saturday...east winds 10 to 20 knots becoming south 5 to
15 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.sunday...west winds 5 to 15 knots veering northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202605272000;;734657

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed may 27 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... 

ridging of 30.2 inches persists over lake superior today due to a 
30.3 inch high centered over hudson bay. on thursday, this parent 
high shifts southward over the lake at 30.3 inches. the high center 
weakens to around 30.1 inches on friday as it continues its 
southerly propagation towards lower michigan, causing pressure to 
decrease to 29.9 inches over lake superior. following this, a second 
ridge pushing in from hudson bay brings 30.1 inch ridging back over 
the lake late on friday. pressure subsequently increases to 30.3 
inches by saturday midday as this second parent high over hudson bay 
propagates south. high pressure persists over lake superior through 
early next week.



lsz263-272000-
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-
1001 am edt wed may 27 2026

.rest of today...northeast winds 10 to 20 knots increasing to
15 to 25 knots in the afternoon, then veering east late. waves
1 to 3 feet building to 2 to 4 feet. 
.tonight...east winds 10 to 20 knots becoming northeast 5 to
15 knots after midnight, then diminishing to less than 10 knots
late. waves subsiding to calm to 2 feet. 
.thursday...east winds 5 to 15 knots backing northeast in the
afternoon. waves calm to 2 feet. 
.thursday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of rain
showers by mid afternoon. waves building to 1 to 3 feet. 
.friday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.saturday...east winds 10 to 20 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$