fzus63 kdtx 270733
glflh 
expires:202603271545;;366609

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt fri mar 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lhz361-271545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
333 am edt fri mar 27 2026

.today...northeast winds 10 to 15 knots becoming north 5 to
10 knots in the late morning and early afternoon...then backing
to the west late in the afternoon. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight...then decreasing to 10 to 15 knots early
in the morning. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.saturday...west winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. waves 2 to 4 feet. 
.saturday night...southwest winds 10 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.sunday...south winds 10 to 15 knots becoming southwest 5 to
10 knots. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots veering to the north until
early evening...then becoming east 10 to 15 knots by midnight. a
chance of rain by midnight. waves 2 feet or less building to 2 to
4 feet by midnight. 
.tuesday...east winds 15 to 20 knots increasing to 20 to 25 knots
by midnight. a chance of rain early in the morning...then rain
likely. waves 6 to 9 feet. waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 270733
glflh 
expires:202603271545;;366610

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt fri mar 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lhz362-363-271545-
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-
333 am edt fri mar 27 2026

.today...north winds 15 to 20 knots decreasing to 5 to 10 knots.
freezing spray in the morning. waves 5 to 7 feet subsiding to
2 to 4 feet late in the afternoon. waves occasionally around
10 feet. 
.tonight...north winds 5 to 10 knots backing to the west late in
the evening...then becoming northwest 15 to 20 knots after
midnight. waves 1 to 3 feet building to 4 to 6 feet after
midnight. waves occasionally around 8 feet. 
.saturday...northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and early afternoon...then backing
to the southwest early in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots after midnight. waves 3 to 5 feet. 
.sunday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet late in the
evening. 
.monday...southwest winds 10 to 15 knots becoming west 5 to
10 knots until early evening...then becoming east 15 to 20 knots
by midnight. a chance of. waves 1 to 3 feet building to 3 to
5 feet by midnight. 
.tuesday...east winds 15 to 20 knots increasing to 20 to 25 knots
in the late morning and early afternoon...then decreasing to
15 to 20 knots early in the evening increasing to 20 to 25 knots
with gusts to around 30 knots by midnight. a chance of rain until
afternoon...then rain likely . waves 6 to 9 feet. waves
occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 270733
glflh 
expires:202603271545;;366611

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt fri mar 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lhz462>464-271545-
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-
333 am edt fri mar 27 2026

.today...north winds 15 to 20 knots decreasing to 10 to 15 knots
in the afternoon. freezing spray. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.tonight...north winds 5 to 10 knots becoming west 10 to 15 knots
after midnight...then becoming northwest 15 to 20 knots early in
the morning. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight...then building to 3 to 5 feet early in the morning. 
.saturday...northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. waves 3 to 5 feet. 
.saturday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet in the late evening and overnight. 
.sunday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon. 
.monday...southwest winds 5 to 10 knots becoming northeast by
midnight. a chance of rain by midnight. waves 1 to 3 feet
building to 2 to 4 feet by midnight. 
.tuesday...southeast winds 15 to 20 knots becoming south 20 to
25 knots by midnight. a chance of rain early in the morning...
then rain likely. waves 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kmkx 270826
glflm 
expires:202603271515;;369216

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
326 am cdt fri mar 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...

strong high pressure around 30.8 inches will move from the
southern canadian prairies into the northern plains through early
this morning. ahead of the high, gusty north northeast winds will
linger across lake michigan early this morning. a gale warning 
remains in effect until 5 am cdt across the southern two thirds 
of the lake. winds will gradually diminish this morning, as the 
high moves into the upper midwest.

high pressure will continue to move southeastward on friday, with
northwesterly winds developing as it passes to the south friday 
night. winds will gradually back to southerly into saturday 
afternoon, as low pressure around 29.7 inches develops in the lee 
of the colorado rockies. winds may shift to the north and
northeast on monday, as a warm front sets up to the south of the
region.



lmz080-669-671-673-675-777-779-870-872-874-876-878-271515-
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-
326 am cdt fri mar 27 2026

sheboygan wi to pentwater mi south...

...gale warning in effect until 5 am cdt early this morning...

.today...northeast gales to 35 kt becoming north to 30 kt through
mid morning, then diminishing to 10 to 20 kt late this morning
becoming north 10 to 20 kt early this afternoon becoming
northwest. waves 10 to 14 ft occasionally to 18 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.tonight...northwest winds 10 to 20 kt becoming north 15 to
25 kt, then becoming northwest 10 to 20 kt late. waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft. 
.saturday...northwest winds 10 to 15 kt becoming west late in the
morning, then becoming southwest 10 to 20 kt early in the
afternoon becoming south 15 to 25 kt late. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday night...south winds 15 to 25 kt becoming southwest.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft. 
.monday...south winds 10 to 15 kt backing to northeast. waves
2 to 4 ft. 
.tuesday...south winds 15 to 25 kt. chance of rain. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 270826
glflm 
expires:202603271515;;369214

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
326 am cdt fri mar 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...

strong high pressure around 30.8 inches will move from the
southern canadian prairies into the northern plains through early
this morning. ahead of the high, gusty north northeast winds will
linger across lake michigan early this morning. a gale warning 
remains in effect until 5 am cdt across the southern two thirds 
of the lake. winds will gradually diminish this morning, as the 
high moves into the upper midwest.

high pressure will continue to move southeastward on friday, with
northwesterly winds developing as it passes to the south friday 
night. winds will gradually back to southerly into saturday 
afternoon, as low pressure around 29.7 inches develops in the lee 
of the colorado rockies. winds may shift to the north and
northeast on monday, as a warm front sets up to the south of the
region.



lmz261-362-364-563-271515-
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 rock island passage to sturgeon bay wi-
326 am cdt fri mar 27 2026

sturgeon bay wi to point betsie mi north...

.today...northeast winds 15 to 25 kt diminishing to 10 to 20 kt
through mid morning, then becoming north 5 to 10 kt late this
morning backing to west 10 to 15 kt early this afternoon
increasing to 10 to 20 kt. slight chance of snow showers. waves
4 to 7 ft occasionally to 9 ft subsiding to 1 to 3 ft. 
.tonight...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. slight chance of snow showers in the evening. waves 3 to
5 ft. 
.saturday...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.saturday night...south winds to 30 kt becoming southwest. waves
5 to 8 ft occasionally to 10 ft. 
.sunday...southwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.sunday night...southwest winds 10 to 15 kt veering to northwest.
waves 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt. waves 2 to 4 ft. 
.tuesday...east winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain. waves 4 to 6 ft occasionally to 8 ft building to
5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 270826
glflm 
expires:202603271515;;369215

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
326 am cdt fri mar 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...

strong high pressure around 30.8 inches will move from the
southern canadian prairies into the northern plains through early
this morning. ahead of the high, gusty north northeast winds will
linger across lake michigan early this morning. a gale warning 
remains in effect until 5 am cdt across the southern two thirds 
of the lake. winds will gradually diminish this morning, as the 
high moves into the upper midwest.

high pressure will continue to move southeastward on friday, with
northwesterly winds developing as it passes to the south friday 
night. winds will gradually back to southerly into saturday 
afternoon, as low pressure around 29.7 inches develops in the lee 
of the colorado rockies. winds may shift to the north and
northeast on monday, as a warm front sets up to the south of the
region.



lmz366-565-567-868-271515-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
326 am cdt fri mar 27 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 5 am cdt early this morning...

.today...northeast gales to 35 kt diminishing to 10 to 20 kt 
through mid morning, then becoming north late this morning 
becoming northwest 10 to 15 kt early this afternoon becoming west.
slight chance of snow showers. waves 7 to 10 ft occasionally to 
13 ft subsiding to 1 to 3 ft. 
.tonight...northwest winds 10 to 20 kt. slight chance of snow
showers in the evening. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.saturday...west winds 10 to 15 kt becoming southwest 10 to
20 kt, then becoming south 15 to 25 kt late. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds 15 to 25 kt becoming southwest.
waves 5 to 8 ft occasionally to 10 ft. 
.sunday...southwest winds 10 to 20 kt becoming south. waves 4 to
7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.sunday night...south winds 10 to 15 kt. waves 3 to 5 ft. 
.monday...northeast winds 10 to 15 kt. waves 2 to 4 ft. 
.tuesday...southeast winds 15 to 25 kt. chance of rain. waves
7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 270801
glfls 
expires:202603272000;;367760

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 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...

today, high pressure builds to 30.8 inches over the northern plains. 
because of this, expect heights to rise to 30.4 inches over lake 
superior today. as this high slowly slides southeast through friday 
and into saturday morning, it weakens to 30.6 inches, eventually 
moving south of lake michigan by midday saturday. as the high 
further weakens to 30.5 inches over the northern appalachian range 
saturday evening, broad 29.7 inch low pressure develops in the 
colorado/wyoming area. on sunday, the high shifts offshore while the 
low extends a weak 30.0 inch trough over lake superior by sunday 
evening. the low deepens to 29.4 inches over the northern plains 
monday night before lifting into the upper great lakes on tuesday. 
30.3 inch high pressure ridging over the canadian prairies and 
northern plains tuesday night moves over lake superior wednesday as 
it strengthens to 30.5 inches.



lsz265-272000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt fri mar 27 2026

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

$$

fzus63 kmqt 270801
glfls 
expires:202603272000;;367761

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 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...

today, high pressure builds to 30.8 inches over the northern plains. 
because of this, expect heights to rise to 30.4 inches over lake 
superior today. as this high slowly slides southeast through friday 
and into saturday morning, it weakens to 30.6 inches, eventually 
moving south of lake michigan by midday saturday. as the high 
further weakens to 30.5 inches over the northern appalachian range 
saturday evening, broad 29.7 inch low pressure develops in the 
colorado/wyoming area. on sunday, the high shifts offshore while the 
low extends a weak 30.0 inch trough over lake superior by sunday 
evening. the low deepens to 29.4 inches over the northern plains 
monday night before lifting into the upper great lakes on tuesday. 
30.3 inch high pressure ridging over the canadian prairies and 
northern plains tuesday night moves over lake superior wednesday as 
it strengthens to 30.5 inches.



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-
400 am edt fri mar 27 2026

.early this morning...north winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.today...west winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon, then increasing to 30 knots with a few
gale force gusts to 35 knots possible late. a chance of snow
showers. waves subsiding to 1 to 3 feet, then building to 5 to
8 feet occasionally to 10 feet. 
.tonight...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots.
freezing spray. a slight chance of snow showers. waves building
to 5 to 9 feet occasionally to 11 feet. 
.saturday...west winds 15 to 25 knots backing south late.
freezing spray through early afternoon. a chance of snow showers
by mid afternoon. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet. 
.sunday...northeast winds 10 to 20 knots backing north by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 10 to 20 knots veering north after
midnight. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots becoming east 20 to
30 knots. a chance of rain showers, possibly mixed with snow.
waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...east gales to 35 knots backing north. a chance of rain
showers. waves building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202603272000;;367762

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 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...

today, high pressure builds to 30.8 inches over the northern plains. 
because of this, expect heights to rise to 30.4 inches over lake 
superior today. as this high slowly slides southeast through friday 
and into saturday morning, it weakens to 30.6 inches, eventually 
moving south of lake michigan by midday saturday. as the high 
further weakens to 30.5 inches over the northern appalachian range 
saturday evening, broad 29.7 inch low pressure develops in the 
colorado/wyoming area. on sunday, the high shifts offshore while the 
low extends a weak 30.0 inch trough over lake superior by sunday 
evening. the low deepens to 29.4 inches over the northern plains 
monday night before lifting into the upper great lakes on tuesday. 
30.3 inch high pressure ridging over the canadian prairies and 
northern plains tuesday night moves over lake superior wednesday as 
it strengthens to 30.5 inches.



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

.early this morning...east winds 10 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.today...south winds 15 to 25 knots veering northwest in the
afternoon, then increasing to 20 to 30 knots late. a chance of
snow showers. waves building to 5 to 8 feet occasionally to
10 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. freezing spray. a chance of snow showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.saturday...west winds 15 to 25 knots backing southwest late.
freezing spray through early afternoon. a chance of snow showers.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots backing north by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots becoming east 15 to 25 knots.
a chance of rain showers, possibly mixed with snow. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...east winds 20 to 30 knots. a chance of rain showers.
waves building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202603272000;;367757

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 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...

today, high pressure builds to 30.8 inches over the northern plains. 
because of this, expect heights to rise to 30.4 inches over lake 
superior today. as this high slowly slides southeast through friday 
and into saturday morning, it weakens to 30.6 inches, eventually 
moving south of lake michigan by midday saturday. as the high 
further weakens to 30.5 inches over the northern appalachian range 
saturday evening, broad 29.7 inch low pressure develops in the 
colorado/wyoming area. on sunday, the high shifts offshore while the 
low extends a weak 30.0 inch trough over lake superior by sunday 
evening. the low deepens to 29.4 inches over the northern plains 
monday night before lifting into the upper great lakes on tuesday. 
30.3 inch high pressure ridging over the canadian prairies and 
northern plains tuesday night moves over lake superior wednesday as 
it strengthens to 30.5 inches.



lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri mar 27 2026 /300 am cdt fri mar 27 2026/

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

$$

fzus63 kmqt 270801
glfls 
expires:202603272000;;367758

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 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...

today, high pressure builds to 30.8 inches over the northern plains. 
because of this, expect heights to rise to 30.4 inches over lake 
superior today. as this high slowly slides southeast through friday 
and into saturday morning, it weakens to 30.6 inches, eventually 
moving south of lake michigan by midday saturday. as the high 
further weakens to 30.5 inches over the northern appalachian range 
saturday evening, broad 29.7 inch low pressure develops in the 
colorado/wyoming area. on sunday, the high shifts offshore while the 
low extends a weak 30.0 inch trough over lake superior by sunday 
evening. the low deepens to 29.4 inches over the northern plains 
monday night before lifting into the upper great lakes on tuesday. 
30.3 inch high pressure ridging over the canadian prairies and 
northern plains tuesday night moves over lake superior wednesday as 
it strengthens to 30.5 inches.



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-
400 am edt fri mar 27 2026

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a slight chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots backing west late.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...west winds 10 to 20 knots backing south late. a
slight chance of snow showers by mid afternoon. waves subsiding
to 1 to 3 feet, then building to 2 to 4 feet. 
.saturday night...south winds 5 to 15 knots backing east after
midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots becoming east 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...east winds 15 to 25 knots becoming north 20 to
30 knots. a chance of rain showers, possibly mixed with snow.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 270801
glfls 
expires:202603272000;;367759

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 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...

today, high pressure builds to 30.8 inches over the northern plains. 
because of this, expect heights to rise to 30.4 inches over lake 
superior today. as this high slowly slides southeast through friday 
and into saturday morning, it weakens to 30.6 inches, eventually 
moving south of lake michigan by midday saturday. as the high 
further weakens to 30.5 inches over the northern appalachian range 
saturday evening, broad 29.7 inch low pressure develops in the 
colorado/wyoming area. on sunday, the high shifts offshore while the 
low extends a weak 30.0 inch trough over lake superior by sunday 
evening. the low deepens to 29.4 inches over the northern plains 
monday night before lifting into the upper great lakes on tuesday. 
30.3 inch high pressure ridging over the canadian prairies and 
northern plains tuesday night moves over lake superior wednesday as 
it strengthens to 30.5 inches.



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

.early this morning...north winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. freezing spray. waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...west winds 10 to 20 knots backing south late. a
slight chance of snow showers by mid afternoon. waves subsiding
to 1 to 3 feet. 
.saturday night...south winds 5 to 15 knots backing east after
midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots becoming east 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...east winds 20 to 30 knots backing northeast. a chance
of rain showers, possibly mixed with snow. waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 

$$