fzus63 kdtx 291942
glflh 
expires:202603300345;;500640

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt sun mar 29 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...southwest return flow holds in place today and monday
while a frontal boundary stalls and strengthens over northern
lake huron monday night. showers and thunderstorms develop as a
result and persist through tuesday, with potential for strong to
severe storms as a strong cold front sweeps across the great
lakes tuesday evening.


lhz361-300345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
342 pm edt sun mar 29 2026

.tonight...southeast winds 5 to 10 knots becoming south 10 to
15 knots after midnight. waves 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming northwest 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.monday night...northeast winds 5 to 10 knots becoming east 15 to
20 knots. a chance of rain after midnight. waves 1 to 3 feet
building to 3 to 5 feet after midnight. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
early in the afternoon. a chance of rain in the morning...then
rain in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.tuesday night...northeast winds 15 to 20 knots backing to the
northwest in the late evening and overnight. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday...northwest winds 15 to 20 knots becoming north 10 to
15 knots late in the morning...then becoming northeast 15 to
20 knots late in the evening. waves 4 to 6 feet subsiding to 1 to
3 feet late in the afternoon...then building to 4 to 6 feet late
in the evening. waves occasionally around 8 feet. 
.thursday...east winds 20 to 25 knots increasing to 30 knots . a
chance of snow early in the morning...then freezing rain...snow
and rain likely . waves 8 to 12 feet. waves occasionally around
15 feet. 
.friday...northeast winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. a chance of rain...snow
and freezing rain early in the morning...then a chance of rain in
the late morning and early afternoon. waves 6 to 9 feet subsiding
to 2 to 4 feet . waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 291942
glflh 
expires:202603300345;;500641

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt sun mar 29 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...southwest return flow holds in place today and monday
while a frontal boundary stalls and strengthens over northern
lake huron monday night. showers and thunderstorms develop as a
result and persist through tuesday, with potential for strong to
severe storms as a strong cold front sweeps across the great
lakes tuesday evening.


lhz362-363-300345-
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-
342 pm edt sun mar 29 2026

.tonight...south winds 10 to 15 knots increasing to 15 to
20 knots after midnight...then becoming southwest 10 to 15 knots
early in the morning. waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the southwest 5 to
10 knots in the afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet in the afternoon. 
.monday night...northeast winds 5 to 10 knots becoming east 10 to
15 knots in the late evening and overnight. a chance of rain
after midnight. waves 1 to 3 feet building to 3 to 5 feet after
midnight. 
.tuesday...east winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. rain likely and a chance of
thunderstorms in the morning...then rain in the afternoon. waves
4 to 6 feet. waves occasionally around 8 feet. 
.tuesday night...north winds 15 to 20 knots backing to the
northwest by midnight...then increasing to 20 to 25 knots after
midnight. a chance of rain in the evening. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.wednesday...northwest winds 20 to 25 knots becoming north 15 to
20 knots late in the morning...then becoming northeast 20 to
25 knots late in the evening. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.thursday...northeast winds 20 to 25 knots with gusts to around
30 knots. a chance of snow early in the morning. rain likely.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday...northeast winds 20 to 25 knots decreasing to 10 to
15 knots. a chance of rain until afternoon. waves 8 to 12 feet
subsiding to 4 to 6 feet . waves occasionally around 15 feet. 


$$

fzus63 kdtx 291942
glflh 
expires:202603300345;;500642

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt sun mar 29 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...southwest return flow holds in place today and monday
while a frontal boundary stalls and strengthens over northern
lake huron monday night. showers and thunderstorms develop as a
result and persist through tuesday, with potential for strong to
severe storms as a strong cold front sweeps across the great
lakes tuesday evening.


lhz462>464-300345-
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-
342 pm edt sun mar 29 2026

.tonight...south winds 10 to 15 knots. waves 2 to 4 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon...then veering to the southwest
5 to 10 knots late in the afternoon. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late morning and afternoon. 
.monday night...north winds 5 to 10 knots veering to the east by
midnight...then increasing to 10 to 15 knots after midnight. rain
likely and a chance of thunderstorms after midnight. waves 1 to
3 feet. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. rain likely and a chance of
thunderstorms in the morning...then rain in the afternoon. waves
3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots veering to the
northwest after midnight. rain and a chance of thunderstorms in
the evening...then a chance of rain after midnight. waves 4 to
6 feet. waves occasionally around 8 feet. 
.wednesday...north winds 15 to 20 knots veering to the northeast
late in the evening. a chance of rain and snow late in the
evening. waves 5 to 7 feet. waves occasionally around 10 feet. 
.thursday...northeast winds 15 to 20 knots. a chance of snow
early in the morning. rain likely. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.friday...north winds 15 to 20 knots decreasing to 10 to 15 knots
. rain likely early in the morning...then a chance of rain in the
late morning and early afternoon. waves 4 to 6 feet. 


$$

fzus63 kmkx 291956
glflm 
expires:202603300315;;500963

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt sun mar 29 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...

breezy southwest winds continue through this afternoon as a cold 
front begins to approach the waters from the north. the front will 
gradually advance south across lake michigan tonight through 
tuesday. this will result in generally east-northeast winds across 
the northern half of the lake with southerly winds further south. a 
few gales are possible over southeastern lake michigan monday night, 
but aren't expected to be widespread. periods of showers and 
thunderstorms will accompany the slow-moving front, with a few 
stronger storms possible monday night and once again on tuesday. 
large hail would be the primary threat in any stronger storms.

winds will trend northerly behind the departing cold front tuesday 
evening through wednesday. will be monitoring trends for a few gusts 
approaching gale force tuesday night into wednesday, with the 
current expectation being for any such gusts to be isolated. 30.7
inch high pressure will shift from ontario to quebec through the 
late week time period as 29.8 inch low pressure builds into the 
ohio river valley, allowing winds to trend east-northeasterly. 
will need to watch for additional isolated gale potential thursday
into friday as low pressure passes near or over lake michigan, 
with the continued expectation for any gusts to be too sparse to 
justify headlines. will nevertheless be monitoring trends into 
this week. additional rain and snow will accompany the 
approaching/passing area of low pressure thursday into next 
weekend.


lmz261-362-364-366-563-565-567-868-300315-
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-
256 pm cdt sun mar 29 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.monday...southwest winds 10 to 20 kt backing to east 10 to
15 kt. waves 2 to 4 ft. 
.monday night...northeast winds 10 to 20 kt becoming east 15 to
25 kt. chance of rain and scattered thunderstorms in the evening,
then rain likely with scattered thunderstorms overnight. waves
3 to 5 ft. 
.tuesday...east winds 10 to 20 kt backing to north. rain likely.
waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.tuesday night...north winds 15 to 25 kt increasing to 30 kt.
waves 5 to 8 ft occasionally to 10 ft. 
.wednesday...north winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.wednesday night...northeast winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.thursday...northeast winds to 30 kt. snow, rain likely with a
chance of light freezing rain. waves 8 to 11 ft occasionally to
14 ft. 
.friday...northeast winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmkx 291956
glflm 
expires:202603300315;;500964

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt sun mar 29 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...

breezy southwest winds continue through this afternoon as a cold 
front begins to approach the waters from the north. the front will 
gradually advance south across lake michigan tonight through 
tuesday. this will result in generally east-northeast winds across 
the northern half of the lake with southerly winds further south. a 
few gales are possible over southeastern lake michigan monday night, 
but aren't expected to be widespread. periods of showers and 
thunderstorms will accompany the slow-moving front, with a few 
stronger storms possible monday night and once again on tuesday. 
large hail would be the primary threat in any stronger storms.

winds will trend northerly behind the departing cold front tuesday 
evening through wednesday. will be monitoring trends for a few gusts 
approaching gale force tuesday night into wednesday, with the 
current expectation being for any such gusts to be isolated. 30.7
inch high pressure will shift from ontario to quebec through the 
late week time period as 29.8 inch low pressure builds into the 
ohio river valley, allowing winds to trend east-northeasterly. 
will need to watch for additional isolated gale potential thursday
into friday as low pressure passes near or over lake michigan, 
with the continued expectation for any gusts to be too sparse to 
justify headlines. will nevertheless be monitoring trends into 
this week. additional rain and snow will accompany the 
approaching/passing area of low pressure thursday into next 
weekend.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300315-
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-
256 pm cdt sun mar 29 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt becoming south. waves 2 to
4 ft subsiding to 1 to 2 ft. 
.monday night...south winds 10 to 20 kt. chance of rain and
scattered thunderstorms in the evening, then rain likely with
scattered thunderstorms overnight. waves 2 to 4 ft building to
4 to 6 ft occasionally to 8 ft. 
.tuesday...south winds to 30 kt becoming southwest. rain likely
with scattered thunderstorms in the morning, then rain and
scattered thunderstorms in the afternoon. waves 4 to 7 ft
occasionally to 9 ft. 
.tuesday night...northwest winds 15 to 25 kt becoming north.
chance of rain and scattered thunderstorms in the evening, then
chance of rain overnight. waves 5 to 8 ft occasionally to 10 ft. 
.wednesday...north winds 15 to 25 kt increasing to 30 kt. waves
6 to 9 ft occasionally to 12 ft building to 7 to 10 ft
occasionally to 13 ft. 
.wednesday night...northeast winds to 30 kt becoming east. chance
of rain and snow. waves 8 to 12 ft occasionally to 16 ft. 
.thursday...northeast winds to 30 kt. rain and snow likely. waves
8 to 12 ft occasionally to 16 ft. 
.friday...northeast winds 10 to 20 kt. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmqt 292001
glfls 
expires:202603300800;;501115

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 29 2026

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

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

.synopsis...

a 29.7 inch low over the central plains this afternoon lifts a 30.0 
inch trough over lake superior. this trough lingers over the great 
lakes and slowly deepens with time early this week before the low 
pushes through at 29.6 inches on tuesday. as the low tracks along 
the st. lawrence seaway tuesday night, 30.3 inch high pressure 
builds over the northern plains, gradually building pressure over 
northern ontario to 30.6 inches by wednesday. by thursday, the high 
builds to 30.8 inches over northern quebec while a weak 29.9 inch 
low passes over the southern great lakes basin and a 29.3 inch low 
pressure organizes in the lee of the rockies.



lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sun mar 29 2026 /300 pm cdt sun mar 29 2026/

.late this afternoon...northeast winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots becoming east 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...east winds 20 to 30 knots backing northeast late.
a chance of rain showers, snow showers, possibly mixed with
freezing rain and sleet after midnight. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of rain showers, freezing
rain and sleet through early afternoon. a chance of snow showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...northeast winds 10 to 20 knots veering east by mid
afternoon. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.wednesday night...east winds 15 to 25 knots. waves building to
4 to 7 feet occasionally to 9 feet. 
.thursday...east gales to 40 knots. a chance of snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet. 
.friday...east winds 15 to 25 knots. a chance of rain and snow
showers. waves subsiding to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202603300800;;501116

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 29 2026

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

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

.synopsis...

a 29.7 inch low over the central plains this afternoon lifts a 30.0 
inch trough over lake superior. this trough lingers over the great 
lakes and slowly deepens with time early this week before the low 
pushes through at 29.6 inches on tuesday. as the low tracks along 
the st. lawrence seaway tuesday night, 30.3 inch high pressure 
builds over the northern plains, gradually building pressure over 
northern ontario to 30.6 inches by wednesday. by thursday, the high 
builds to 30.8 inches over northern quebec while a weak 29.9 inch 
low passes over the southern great lakes basin and a 29.3 inch low 
pressure organizes in the lee of the rockies.



lsz263-300800-
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 pm edt sun mar 29 2026

.late this afternoon...northeast winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then becoming east 15 to 25 knots
late. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...east winds 20 to 30 knots. a chance of rain and
snow showers, possibly mixed with freezing rain after midnight.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northeast winds 15 to 25 knots. a chance of rain
showers through early afternoon. a chance of snow showers,
possibly mixed with freezing rain and sleet. waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday night...north winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.wednesday...northeast winds 5 to 15 knots. waves subsiding to
1 to 3 feet. 
.wednesday night...east winds 10 to 20 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.thursday...east winds 20 to 30 knots. a chance of snow showers.
waves building to 8 to 11 feet occasionally to 14 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet. 
.friday...east winds 15 to 25 knots. a chance of rain showers.
waves subsiding to 4 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202603300800;;501117

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 29 2026

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

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

.synopsis...

a 29.7 inch low over the central plains this afternoon lifts a 30.0 
inch trough over lake superior. this trough lingers over the great 
lakes and slowly deepens with time early this week before the low 
pushes through at 29.6 inches on tuesday. as the low tracks along 
the st. lawrence seaway tuesday night, 30.3 inch high pressure 
builds over the northern plains, gradually building pressure over 
northern ontario to 30.6 inches by wednesday. by thursday, the high 
builds to 30.8 inches over northern quebec while a weak 29.9 inch 
low passes over the southern great lakes basin and a 29.3 inch low 
pressure organizes in the lee of the rockies.



lsz264-300800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt sun mar 29 2026

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...north winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots becoming east 10 to
20 knots late. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.monday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of snow showers. a chance of
rain showers and freezing rain after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.tuesday...east winds 20 to 30 knots becoming northeast 15 to
25 knots by mid afternoon. a slight chance of freezing rain
through early afternoon. a chance of snow showers, possibly mixed
with sleet. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north winds 15 to 25 knots. waves subsiding to
2 to 4 feet. 
.wednesday...north winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...east winds 20 to 30 knots. a chance of snow showers.
waves building to 5 to 9 feet occasionally to 11 feet. 
.friday...east winds 15 to 25 knots increasing to 20 to 30 knots.
a chance of snow showers. a chance of rain showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202603300800;;501118

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 29 2026

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

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

.synopsis...

a 29.7 inch low over the central plains this afternoon lifts a 30.0 
inch trough over lake superior. this trough lingers over the great 
lakes and slowly deepens with time early this week before the low 
pushes through at 29.6 inches on tuesday. as the low tracks along 
the st. lawrence seaway tuesday night, 30.3 inch high pressure 
builds over the northern plains, gradually building pressure over 
northern ontario to 30.6 inches by wednesday. by thursday, the high 
builds to 30.8 inches over northern quebec while a weak 29.9 inch 
low passes over the southern great lakes basin and a 29.3 inch low 
pressure organizes in the lee of the rockies.



lsz265-300800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sun mar 29 2026

.late this afternoon...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering northwest after
midnight, then veering north late. waves calm to 2 feet. 
.monday...north winds 10 to 20 knots veering east late. waves
building to 1 to 3 feet. 
.monday night...east winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers, possibly mixed with snow.
waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...east winds 20 to 30 knots backing northeast by mid
afternoon. rain showers likely through early afternoon. a chance
of snow showers, possibly mixed with freezing rain. a chance of
rain showers by mid afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...north winds 20 to 30 knots. freezing spray after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...north winds 15 to 25 knots becoming northeast 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots becoming east
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east winds 20 to 30 knots increasing to gales to
35 knots. freezing spray. a chance of snow showers. waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.friday...east winds 20 to 30 knots veering southeast. a chance
of rain showers. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202603300800;;501119

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 29 2026

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

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

.synopsis...

a 29.7 inch low over the central plains this afternoon lifts a 30.0 
inch trough over lake superior. this trough lingers over the great 
lakes and slowly deepens with time early this week before the low 
pushes through at 29.6 inches on tuesday. as the low tracks along 
the st. lawrence seaway tuesday night, 30.3 inch high pressure 
builds over the northern plains, gradually building pressure over 
northern ontario to 30.6 inches by wednesday. by thursday, the high 
builds to 30.8 inches over northern quebec while a weak 29.9 inch 
low passes over the southern great lakes basin and a 29.3 inch low 
pressure organizes in the lee of the rockies.



lsz266-300800-
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 pm edt sun mar 29 2026

.late this afternoon...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...south winds 10 to 20 knots veering northwest after
midnight, then veering north late. waves building to 1 to 3 feet.
.monday...north winds 10 to 20 knots veering northeast in the
afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain and snow showers. a slight chance of
freezing rain after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...east winds 20 to 30 knots backing northeast by mid
afternoon. snow showers, possibly mixed with rain through early
afternoon. a slight chance of freezing rain, possibly mixed with
sleet. a chance of snow showers, possibly mixed with rain by mid
afternoon. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north winds 20 to 30 knots. freezing spray after
midnight. waves building to 4 to 8 feet occasionally to 10 feet. 
.wednesday...north winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. freezing spray through early
afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots becoming east
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east winds 20 to 30 knots. freezing spray. a chance
of snow showers. waves building to 6 to 10 feet occasionally to
13 feet. 
.friday...east winds 20 to 30 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 5 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202603300800;;501120

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 29 2026

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

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

.synopsis...

a 29.7 inch low over the central plains this afternoon lifts a 30.0 
inch trough over lake superior. this trough lingers over the great 
lakes and slowly deepens with time early this week before the low 
pushes through at 29.6 inches on tuesday. as the low tracks along 
the st. lawrence seaway tuesday night, 30.3 inch high pressure 
builds over the northern plains, gradually building pressure over 
northern ontario to 30.6 inches by wednesday. by thursday, the high 
builds to 30.8 inches over northern quebec while a weak 29.9 inch 
low passes over the southern great lakes basin and a 29.3 inch low 
pressure organizes in the lee of the rockies.



lsz267-300800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt sun mar 29 2026

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

$$