fzus63 kdtx 010156
glflh 
expires:202604011000;;620808

open lake forecast for lake huron
national weather service detroit/pontiac mi
956 pm edt tue mar 31 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 moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lhz361-011000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
956 pm edt tue mar 31 2026

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

wave heights are for ice free areas.

$$

fzus63 kdtx 010156
glflh 
expires:202604011000;;620809

open lake forecast for lake huron
national weather service detroit/pontiac mi
956 pm edt tue mar 31 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 moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lhz362-363-011000-
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-
956 pm edt tue mar 31 2026

.rest of tonight...north winds 10 to 15 knots. waves 3 to 5 feet.
.wednesday...north winds 10 to 15 knots. waves 3 to 5 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming east
20 to 25 knots after midnight. a chance of snow showers...showers
and sleet after midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.thursday...east winds 20 to 25 knots with gusts to around
30 knots. showers...freezing rain and a chance of snow showers in
the morning...then showers and freezing rain in the afternoon.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.thursday night...east winds 15 to 20 knots becoming southeast
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. showers and a chance of thunderstorms in the
evening...then showers after midnight. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then becoming north 15 to 20 knots
late in the evening. a chance of showers. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.saturday...east winds 20 to 25 knots decreasing to 15 to
20 knots until early evening...then becoming south 20 to 25 knots
by midnight. rain and freezing rain early in the morning. a
chance of rain. a chance of snow by midnight. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.sunday...west winds 20 to 25 knots increasing to 30 knots until
early evening...then becoming northwest 20 to 25 knots by
midnight. a chance of rain early in the morning. waves 10 to
14 feet. waves occasionally around 18 feet. 


$$

fzus63 kdtx 010156
glflh 
expires:202604011000;;620810

open lake forecast for lake huron
national weather service detroit/pontiac mi
956 pm edt tue mar 31 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 moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lhz462>464-011000-
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-
956 pm edt tue mar 31 2026

.rest of tonight...north winds 15 to 20 knots. waves 3 to 5 feet.
.wednesday...north winds 15 to 20 knots. waves 3 to 5 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming east
10 to 15 knots after midnight. a chance of rain and snow showers
after midnight. waves 4 to 6 feet. 
.thursday...east winds 10 to 15 knots. a chance of showers. waves
4 to 6 feet. waves occasionally around 8 feet. 
.thursday night...southeast winds 15 to 20 knots becoming south
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. showers in the evening...then a chance of showers
after midnight. waves 6 to 9 feet. waves occasionally around
12 feet. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then veering to the north late in
the evening. a chance of showers...then a chance of rain late in
the evening. waves 4 to 6 feet subsiding to 2 to 4 feet late in
the afternoon. waves occasionally around 8 feet. 
.saturday...east winds 15 to 20 knots veering to the southwest by
midnight. a chance of rain early in the morning. rain until early
evening...then a chance of rain by midnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday...west winds 20 to 25 knots veering to the northwest by
midnight. a chance of rain and snow early in the morning. waves
6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kmkx 311949
glflm 
expires:202604010315;;607710

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm cdt tue mar 31 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 slow moving cold front over southern lake michigan will reach 
the southern tip of the lake late this afternoon. modest 
southerly winds south of the front will shift northerly and become
brisk into wednesday. scattered thunderstorms will continue over 
the southern portion of the lake into early this evening. 

breezy easterly winds are then expected wednesday night into 
thursday between high pressure of 30.7 inches east of james bay in
canada, and low pressure of 29.4 inches lifting from the central 
plains into wisconsin. gusts could approach gale force over far 
northern lake michigan on thursday. the breezy easterly winds will
shift southerly from south to north across the lake thursday
afternoon and evening with the passage of a warm front, then
followed by the cold front with winds shifting westerly late
thursday night. 


lmz261-362-364-366-563-565-567-868-010315-
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-
249 pm cdt tue mar 31 2026

sheboygan wi to pentwater mi north...

.tonight...north winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 6 ft occasionally to 8 ft. 
.wednesday...northeast winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.wednesday night...northeast winds to 30 kt becoming east. chance
of rain in the evening, then rain with freezing rain and snow
likely overnight. waves 5 to 8 ft occasionally to 10 ft.
.thursday...east winds to 30 kt becoming southeast. brief gales
are possible. rain, freezing rain and snow in the morning, then 
rain and freezing rain in the afternoon. waves 7 to 10 ft 
occasionally to 13 ft. 
.thursday night...south winds to 30 kt becoming southwest to 30 
kt. brief gales are possible. rain with a chance of thunderstorms
in the evening. waves 8 to 11 ft occasionally to 14 ft. 
.friday...west winds to 30 kt becoming northwest 10 to 20 kt in
the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
3 to 5 ft. 
.friday night...northeast winds 15 to 25 kt. chance of rain,
freezing rain likely with a chance of snow. waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.saturday...east winds to 30 kt. rain likely with freezing rain.
waves 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest gales to 35 kt diminishing to 30 kt. waves
7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft.  

$$

fzus63 kmkx 010159
glflm 
expires:202604010930;;620867

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue mar 31 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...

northerly winds become brisk into wednesday as a high pressure
around 30.5 inches builds over ontario. high pressure will
strengthen into the day wednesday to 30.6 inches as it pushes
toward eastern ontario with a bit of a front sliding down the lake
with northeastern winds behind it. 

breezy easterly winds are then expected wednesday night into 
thursday between high pressure of now 30.7 inches east of james 
bay in canada, and low pressure of 29.4 inches lifting from the 
central plains into wisconsin. gusts appear more likely to reach 
gale force over far northern lake michigan on thursday and thus a 
gale watch has been issued thursday morning through most of the
afternoon. the breezy easterly winds will shift southerly from 
south to north across the lake thursday afternoon into the evening
with the passage of a warm front, then followed by the cold front
with winds shifting westerly late thursday night. precipitation 
is expected wednesday night through thursday with a chance for
some ice toward far northern parts of the lake, particularly
thursday morning. then expect some storm chances primarily over 
the southern half of the lake thursday afternoon and evening as
the 29.5 inch low pushes through the northern lake thursday 
night.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010930-
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 pm cdt tue mar 31 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds to 30 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.wednesday...northeast winds 15 to 25 kt. slight chance of rain
in the morning. waves 5 to 8 ft occasionally to 10 ft. 
.wednesday night...northeast winds 15 to 25 kt becoming east to
30 kt. chance of rain overnight. waves 6 to 9 ft occasionally to
12 ft. 
.thursday...southeast gales to 35 kt becoming south to 30 kt.
rain likely in the morning, then chance of rain and thunderstorms
in the afternoon. waves 7 to 10 ft occasionally to 13 ft. 
.thursday night...south gales to 35 kt becoming southwest to
30 kt. rain likely with a chance of thunderstorms in the evening.
waves 8 to 11 ft occasionally to 14 ft. 
.friday...west winds 10 to 20 kt veering to northeast 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft. 
.friday night...northeast winds 15 to 25 kt becoming east 10 to
20 kt. rain likely with a chance of thunderstorms. waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft. 
.saturday...south winds 15 to 25 kt becoming west. chance of
rain. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest winds to 30 kt. waves 8 to 11 ft occasionally
to 14 ft.  

$$

fzus63 kmkx 010159
glflm 
expires:202604010930;;620865

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue mar 31 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...

northerly winds become brisk into wednesday as a high pressure
around 30.5 inches builds over ontario. high pressure will
strengthen into the day wednesday to 30.6 inches as it pushes
toward eastern ontario with a bit of a front sliding down the lake
with northeastern winds behind it. 

breezy easterly winds are then expected wednesday night into 
thursday between high pressure of now 30.7 inches east of james 
bay in canada, and low pressure of 29.4 inches lifting from the 
central plains into wisconsin. gusts appear more likely to reach 
gale force over far northern lake michigan on thursday and thus a 
gale watch has been issued thursday morning through most of the
afternoon. the breezy easterly winds will shift southerly from 
south to north across the lake thursday afternoon into the evening
with the passage of a warm front, then followed by the cold front
with winds shifting westerly late thursday night. precipitation 
is expected wednesday night through thursday with a chance for
some ice toward far northern parts of the lake, particularly
thursday morning. then expect some storm chances primarily over 
the southern half of the lake thursday afternoon and evening as
the 29.5 inch low pushes through the northern lake thursday 
night.


lmz261-362-364-563-010930-
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-
859 pm cdt tue mar 31 2026

sturgeon bay wi to point betsie mi north...

...gale watch in effect from thursday morning through thursday
afternoon...

.rest of tonight...north winds 10 to 20 kt increasing to 30 kt,
then diminishing to 15 to 25 kt late. waves 2 to 4 ft building to
4 to 6 ft occasionally to 8 ft. 
.wednesday...northeast winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.wednesday night...east winds 15 to 25 kt increasing to 30 kt.
chance of snow overnight. waves 5 to 8 ft occasionally to 10 ft. 
.thursday...east gales to 40 kt. rain and freezing rain. waves
7 to 10 ft occasionally to 13 ft. 
.thursday night...southeast gales to 35 kt veering to southwest
to 30 kt. rain and freezing rain in the evening. waves 8 to 11 ft
occasionally to 14 ft. 
.friday...west winds to 30 kt becoming northwest 10 to 20 kt in
the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
3 to 5 ft. 
.friday night...northeast winds 15 to 25 kt becoming east. chance
of rain, freezing rain likely with a chance of snow. waves 3 to
5 ft building to 4 to 7 ft occasionally to 9 ft. 
.saturday...east winds to 30 kt. rain likely with freezing rain.
waves 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest gales to 35 kt diminishing to 30 kt. waves
6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 010159
glflm 
expires:202604010930;;620866

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue mar 31 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...

northerly winds become brisk into wednesday as a high pressure
around 30.5 inches builds over ontario. high pressure will
strengthen into the day wednesday to 30.6 inches as it pushes
toward eastern ontario with a bit of a front sliding down the lake
with northeastern winds behind it. 

breezy easterly winds are then expected wednesday night into 
thursday between high pressure of now 30.7 inches east of james 
bay in canada, and low pressure of 29.4 inches lifting from the 
central plains into wisconsin. gusts appear more likely to reach 
gale force over far northern lake michigan on thursday and thus a 
gale watch has been issued thursday morning through most of the
afternoon. the breezy easterly winds will shift southerly from 
south to north across the lake thursday afternoon into the evening
with the passage of a warm front, then followed by the cold front
with winds shifting westerly late thursday night. precipitation 
is expected wednesday night through thursday with a chance for
some ice toward far northern parts of the lake, particularly
thursday morning. then expect some storm chances primarily over 
the southern half of the lake thursday afternoon and evening as
the 29.5 inch low pushes through the northern lake thursday 
night.


lmz366-565-567-868-010930-
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-
859 pm cdt tue mar 31 2026

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

.rest of tonight...north winds to 30 kt diminishing to 15 to
25 kt. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft. 
.wednesday...northeast winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.wednesday night...northeast winds 15 to 25 kt becoming east to
30 kt. rain overnight. waves 5 to 8 ft occasionally to 10 ft. 
.thursday...east winds to 30 kt becoming southeast gales to
35 kt. rain. waves 7 to 10 ft occasionally to 13 ft. 
.thursday night...south gales to 35 kt becoming southwest to
30 kt. rain with a chance of thunderstorms in the evening, then
rain likely overnight. waves 8 to 11 ft occasionally to 14 ft. 
.friday...west winds 10 to 20 kt veering to north 10 to 15 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to 4 ft. 
.friday night...northeast winds 15 to 25 kt. rain. waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft. 
.saturday...east winds 15 to 25 kt veering to west. chance of
rain. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft subsiding to 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 010201
glfls 
expires:202604010800;;620926

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue mar 31 2026

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

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

.synopsis...

this evening lake superior is between a 29.7 inch low over southern 
ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt tue mar 31 2026 /900 pm cdt tue mar 31 2026/

...gale watch in effect from thursday morning through late
thursday night...

.rest of tonight...northwest winds 10 to 20 knots veering
northeast after midnight, then increasing to 15 to 25 knots late.
a slight chance of snow showers by midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...east winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of snow by mid afternoon. waves
building to 4 to 7 feet occasionally to 9 feet. 
.wednesday night...east winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible late. a
chance of snow. waves building to 7 to 10 feet occasionally to
13 feet. 
.thursday...east gales to 40 knots becoming northeast gales to
45 knots by mid afternoon. snow, possibly mixed with sleet. a
slight chance of rain by mid afternoon. waves building to 12 to
17 feet occasionally to 21 feet. 
.thursday night...northeast gales to 45 knots becoming north
gales to 35 knots after midnight. snow, possibly mixed with rain
and sleet through midnight, then a chance of snow after midnight.
waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.friday...north winds 15 to 25 knots veering northeast by mid
afternoon. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.friday night...east winds 20 to 30 knots becoming northeast
gales to 35 knots after midnight. a chance of snow showers
through midnight, then snow showers, possibly mixed with rain
after midnight. waves building to 9 to 12 feet occasionally to
15 feet. 
.saturday...northeast winds 20 to 30 knots backing north. snow
showers, then a chance of snow showers. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202604010800;;620927

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue mar 31 2026

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

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

.synopsis...

this evening lake superior is between a 29.7 inch low over southern 
ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz263-010800-
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-
1000 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.rest of tonight...northeast winds 5 to 15 knots. a slight chance
of snow showers by midnight. waves 2 to 4 feet. 
.wednesday...east winds 10 to 20 knots increasing to 15 to
25 knots late. waves building to 3 to 6 feet occasionally to
8 feet. 
.wednesday night...east winds 15 to 25 knots. a chance of snow.
waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday...east gales to 45 knots. snow likely through early
afternoon. a slight chance of sleet. snow, possibly mixed with
rain and freezing rain by mid afternoon. waves building to 11 to
15 feet occasionally to 19 feet. 
.thursday night...northeast gales to 45 knots becoming north
gales to 35 knots after midnight. snow, possibly mixed with rain
and sleet likely through midnight. a chance of freezing rain. a
chance of snow after midnight. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday...north winds 15 to 25 knots veering northeast by mid
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet.
.friday night...northeast winds 20 to 30 knots veering east after
midnight. a chance of snow showers, possibly mixed with freezing
rain through midnight, then snow showers, possibly mixed with
rain after midnight. waves building to 9 to 12 feet occasionally
to 15 feet. 
.saturday...northeast winds 20 to 30 knots backing north. snow
showers, possibly mixed with rain, then a chance of snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet. 
.sunday...northwest winds 20 to 30 knots becoming southwest 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202604010800;;620928

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue mar 31 2026

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

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

.synopsis...

this evening lake superior is between a 29.7 inch low over southern 
ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.rest of tonight...northeast winds 10 to 20 knots. waves 2 to
4 feet. 
.wednesday...northeast winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. waves
subsiding to 1 to 3 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 20 to
30 knots. a slight chance of snow. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...east gales to 40 knots. snow likely through early
afternoon. a slight chance of sleet. snow, possibly mixed with
freezing rain by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.thursday night...northeast gales to 40 knots becoming north
gales to 35 knots after midnight. snow, possibly mixed with
freezing rain, rain and sleet through midnight, then a chance of
snow, possibly mixed with freezing rain after midnight. freezing
spray after midnight. waves subsiding to 6 to 9 feet occasionally
to 11 feet. 
.friday...north winds 20 to 30 knots becoming northeast 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.friday night...northeast winds 20 to 30 knots veering east after
midnight. a chance of snow showers. a chance of freezing rain
after midnight. waves building to 8 to 11 feet occasionally to
14 feet. 
.saturday...northeast winds 20 to 30 knots becoming north gales
to 35 knots. snow showers likely with pockets of freezing rain,
then a chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.sunday...northwest gales to 35 knots becoming southwest 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202604010800;;620929

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue mar 31 2026

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

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

.synopsis...

this evening lake superior is between a 29.7 inch low over southern 
ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.rest of tonight...north winds 15 to 25 knots. waves 2 to 4 feet.
.wednesday...northeast winds 10 to 20 knots veering east in the
afternoon, then increasing to 15 to 25 knots late. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of snow. waves building to 5 to
8 feet occasionally to 10 feet. 
.thursday...east gales to 40 knots. freezing spray through early
afternoon. a slight chance of freezing rain and sleet through
early afternoon. snow. sleet, possibly mixed with freezing rain
and rain by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.thursday night...east gales to 40 knots becoming north gales to
35 knots after midnight. rain likely through midnight. a chance
of snow. a chance of rain after midnight. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.friday...northwest winds 20 to 30 knots veering north by mid
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet.
.friday night...northeast winds 20 to 30 knots becoming east
gales to 35 knots after midnight. a chance of snow showers,
possibly mixed with freezing rain, rain showers and sleet through
midnight, then rain showers, freezing rain likely and snow
showers after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.saturday...east gales to 35 knots backing north. rain showers,
possibly mixed with freezing rain. snow showers. waves building
to 9 to 12 feet occasionally to 15 feet, then subsiding to 7 to
10 feet occasionally to 13 feet. 
.sunday...northwest gales to 35 knots becoming west 15 to
25 knots. a chance of snow showers. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202604010800;;620930

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue mar 31 2026

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

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

.synopsis...

this evening lake superior is between a 29.7 inch low over southern 
ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz266-010800-
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-
1000 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.rest of tonight...north winds 15 to 25 knots veering northeast
late. waves 2 to 4 feet. 
.wednesday...northeast winds 15 to 25 knots becoming east 10 to
20 knots in the afternoon. waves 2 to 4 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots late. a chance of snow. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...east gales to 45 knots. a slight chance of freezing
rain through early afternoon. snow, possibly mixed with sleet.
freezing rain, possibly mixed with rain by mid afternoon. waves
building to 10 to 14 feet occasionally to 18 feet. 
.thursday night...east gales to 40 knots becoming north gales to
35 knots after midnight. rain, possibly mixed with freezing rain
and sleet through midnight. a chance of snow. a chance of rain,
possibly mixed with freezing rain after midnight. waves subsiding
to 6 to 9 feet occasionally to 11 feet. 
.friday...northwest gales to 35 knots becoming north 20 to
30 knots by mid afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...northeast winds 20 to 30 knots becoming east
gales to 35 knots after midnight. a chance of snow showers,
possibly mixed with rain and sleet through midnight. a chance of
freezing rain. snow showers, possibly mixed with rain after
midnight. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 8 to 11 feet occasionally to 14 feet. 
.saturday...east gales to 35 knots becoming north gales to
40 knots. freezing rain. snow showers, possibly mixed with rain.
waves subsiding to 7 to 10 feet occasionally to 13 feet, then
building to 11 to 15 feet occasionally to 19 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202604010800;;620931

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue mar 31 2026

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

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

.synopsis...

this evening lake superior is between a 29.7 inch low over southern 
ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.rest of tonight...north winds 15 to 25 knots veering northeast
after midnight. waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.wednesday...northeast winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 20 to
30 knots. a chance of snow. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east gales to 40 knots. snow, possibly mixed with
freezing rain and sleet. rain by mid afternoon. waves building to
7 to 10 feet occasionally to 13 feet. 
.thursday night...east gales to 35 knots becoming west 20 to
30 knots after midnight. rain and a slight chance of
thunderstorms through midnight. a chance of snow. a chance of
rain after midnight. waves subsiding to 3 to 6 feet occasionally
to 8 feet. 
.friday...northwest winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northeast winds 20 to 30 knots veering east after
midnight. rain and snow showers likely, possibly mixed with
freezing rain after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...east winds 20 to 30 knots becoming north gales to
35 knots. freezing rain. rain and snow showers. waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.sunday...northwest gales to 35 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$