fzus63 kdtx 041359
glflh 
expires:202604042200;;819579

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt sat apr 4 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a low pressure system tracks into the straits by 
this evening as its warm front lifts northward, maintaining 
numerous showers and thunderstorms through early evening. cooler 
conditions follow this system sunday, with a series of weak 
clipper systems expected to track through monday into tuesday.


lhz361-362-042200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
959 am edt sat apr 4 2026

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

.rest of today...east winds 20 to 25 knots decreasing to 15 to
20 knots late in the afternoon. gusts to 30 knots. rain. waves
8 to 12 feet. waves occasionally around 15 feet. 
.tonight...southeast winds 10 to 15 knots veering to the south
late in the evening...then becoming southwest 15 to 20 knots with
gusts to around 30 knots after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.sunday...west winds 20 to 25 knots with gusts to 35 knot gales.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots becoming west 5 to 10 knots. waves 8 to 12 feet
subsiding to 4 to 6 feet after midnight. waves occasionally
around 15 feet. 
.monday...west winds 5 to 10 knots becoming northwest 20 to
25 knots with gusts to around 30 knots. a chance of snow. waves
1 to 3 feet building to 6 to 9 feet late in the afternoon. waves
occasionally around 12 feet. 
.tuesday...north winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and early afternoon...then becoming
west 5 to 10 knots early in the evening becoming south 10 to
15 knots by midnight. waves 8 to 12 feet subsiding to 4 to 6 feet
in the late morning and early afternoon...then subsiding to 1 to
3 feet early in the evening building to 2 to 4 feet by midnight.
waves occasionally around 15 feet. 
.wednesday...south winds 15 to 20 knots increasing to 30 knots
with gusts to 35 knot gales. a chance of snow early in the
evening. a chance of rain . waves 6 to 9 feet building to 10 to
14 feet . waves occasionally around 18 feet. 


$$

fzus63 kdtx 041359
glflh 
expires:202604042200;;819580

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt sat apr 4 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a low pressure system tracks into the straits by 
this evening as its warm front lifts northward, maintaining 
numerous showers and thunderstorms through early evening. cooler 
conditions follow this system sunday, with a series of weak 
clipper systems expected to track through monday into tuesday.


lhz363-462-042200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
959 am edt sat apr 4 2026

.rest of today...east winds 15 to 20 knots. rain. waves 4 to
6 feet. 
.tonight...south winds 10 to 15 knots becoming southwest 15 to
20 knots in the late evening and overnight. a chance of rain in
the evening. waves 3 to 5 feet. waves occasionally around 8 feet.
.sunday...west winds 15 to 20 knots. gusts to 30 knots early in
the morning then 30 knots early in the afternoon. waves 6 to
9 feet. waves occasionally around 12 feet. 
.sunday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 5 to 7 feet. waves occasionally around 10 feet. 
.monday...west winds 5 to 10 knots becoming northwest 10 to
15 knots late in the afternoon...then increasing to 20 to
25 knots with gusts to around 30 knots late in the evening. a
chance of rain late in the morning. a chance of snow. waves 1 to
3 feet building to 8 to 12 feet. waves occasionally around
15 feet. 
.tuesday...north winds 20 to 25 knots with gusts to around
30 knots becoming northwest 10 to 15 knots until early evening...
then backing to the south 10 to 15 knots by midnight. waves 8 to
12 feet subsiding to 2 to 4 feet . waves occasionally around
15 feet. 
.wednesday...south winds 15 to 20 knots increasing to 20 to
25 knots with gusts to 35 knot gales. a chance of rain by
midnight. waves 5 to 7 feet building to 8 to 12 feet . waves
occasionally around 15 feet. 


$$

fzus63 kmkx 041346
glflm 
expires:202604042130;;819353

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
846 am cdt sat apr 4 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...

east winds will continue over far northern lake michigan this
morning, with gusts to near gale force. winds will gradually veer
southwest across the entire lake through the day as low pressure 
around 29.6 inches crosses the northern portions of the lake. as 
low pressure exits into ontario and deepens to 29.3 inches, expect
winds to become westerly and gust again around 30 kt through 
tonight.

winds gradually diminish through sunday as low pressure exits 
into northern quebec. a weak low around 30.0 inches in southern 
quebec will bring gusty conditions again sunday night into monday 
morning, with winds remaining northwesterly. as low pressure exits
into monday night, winds shift northerly with a few gusts to gale
force. high pressure builds into the upper midwest into tuesday, 
with winds becoming light and variable. winds shift back to 
southerly as low pressure develops in the northern plains into 
wednesday. southerly gales will be possible mid week. 


lmz261-362-364-366-563-565-567-868-042130-
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-
846 am cdt sat apr 4 2026

sheboygan wi to pentwater mi north...

.rest of today...east winds to 30 kt veering to southwest. rain
showers, freezing rain and slight chance of thunderstorms through
mid morning, then chance of rain showers this afternoon. waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tonight...southwest winds to 30 kt becoming west. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.sunday...northwest winds to 30 kt becoming west 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 3 to 5 ft. 
.sunday night...west winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain showers in the evening. waves 1 to 3 ft. 
.monday...northwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. chance of snow showers in the afternoon. waves 2 to
4 ft building to 4 to 7 ft occasionally to 9 ft. 
.monday night...north gales to 35 kt diminishing to 30 kt. waves
8 to 11 ft occasionally to 14 ft. 
.tuesday...northwest winds 15 to 25 kt backing to southwest 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 1 to
3 ft. 
.wednesday...south gales to 35 kt. chance of rain and snow
showers. waves 12 to 16 ft occasionally to 21 ft.  

$$

fzus63 kmkx 041346
glflm 
expires:202604042130;;819354

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
846 am cdt sat apr 4 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...

east winds will continue over far northern lake michigan this
morning, with gusts to near gale force. winds will gradually veer
southwest across the entire lake through the day as low pressure 
around 29.6 inches crosses the northern portions of the lake. as 
low pressure exits into ontario and deepens to 29.3 inches, expect
winds to become westerly and gust again around 30 kt through 
tonight.

winds gradually diminish through sunday as low pressure exits 
into northern quebec. a weak low around 30.0 inches in southern 
quebec will bring gusty conditions again sunday night into monday 
morning, with winds remaining northwesterly. as low pressure exits
into monday night, winds shift northerly with a few gusts to gale
force. high pressure builds into the upper midwest into tuesday, 
with winds becoming light and variable. winds shift back to 
southerly as low pressure develops in the northern plains into 
wednesday. southerly gales will be possible mid week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-042130-
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-
846 am cdt sat apr 4 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds to 30 kt veering to southwest.
rain showers likely with slight chance of thunderstorms through
mid morning, then slight chance of rain showers this afternoon.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tonight...west winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt becoming west 10 to 20 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.sunday night...west winds 10 to 15 kt increasing to 10 to 20 kt.
chance of rain showers. waves 2 to 4 ft. 
.monday...northwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft. 
.monday night...north winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft. 
.tuesday...north winds 15 to 25 kt becoming northeast 5 to 10 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 3 to 5 ft. 
.wednesday...south gales to 35 kt. waves 10 to 14 ft occasionally
to 18 ft.  

$$

fzus63 kmqt 041401
glfls 
expires:202604042000;;819635

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 4 2026

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

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

.synopsis...

this morning, lake superior is between a low of 29.8 inches in 
southern wisconsin and a high of 30.6 inches over northern quebec. 
the low deepens to 29.7 inches over the straits of mackinac today 
before further deepening to 29.4 inches over western quebec by 
sunday morning. a weak 30.1 inch trough passes over the lake sunday 
night into monday. monday afternoon, 30.6 inch high pressure resides 
over north dakota before moving over wisconsin tuesday morning. the 
high shifts to the lowert great lakes tuesday night as a 29.5 inch 
low organizes along the montana/saskatchewan border. this low moves 
over the northwest angle wednesday night before moving north of the 
lake through thursday morning.



lsz162-042000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat apr 4 2026 /900 am cdt sat apr 4 2026/

...gale warning in effect until 2 pm edt /1 pm cdt/ this
afternoon...

.rest of today...east gales to 35 knots becoming northeast 20 to
30 knots late. snow by late morning. a slight chance of rain and
sleet. snow showers by mid afternoon. waves 9 to 12 feet
occasionally to 15 feet subsiding to 5 to 8 feet occasionally to
10 feet. 
.tonight...north winds 15 to 25 knots becoming northwest 20 to
30 knots after midnight, then diminishing to 15 to 25 knots late.
a chance of snow showers through midnight. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 10 to 20 knots backing west in the
afternoon. a slight chance of rain and snow showers by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots becoming northwest 15 to
25 knots after midnight. a chance of rain and snow showers. waves
building to 2 to 4 feet. 
.monday...north winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.monday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south 15 to
25 knots. a chance of snow showers, possibly mixed with rain.
waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...south winds 15 to 25 knots becoming west 20 to
30 knots. a chance of rain showers, possibly mixed with snow.
waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202604042000;;819636

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 4 2026

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

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

.synopsis...

this morning, lake superior is between a low of 29.8 inches in 
southern wisconsin and a high of 30.6 inches over northern quebec. 
the low deepens to 29.7 inches over the straits of mackinac today 
before further deepening to 29.4 inches over western quebec by 
sunday morning. a weak 30.1 inch trough passes over the lake sunday 
night into monday. monday afternoon, 30.6 inch high pressure resides 
over north dakota before moving over wisconsin tuesday morning. the 
high shifts to the lowert great lakes tuesday night as a 29.5 inch 
low organizes along the montana/saskatchewan border. this low moves 
over the northwest angle wednesday night before moving north of the 
lake through thursday morning.



lsz263-042000-
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 am edt sat apr 4 2026

...gale warning in effect until 2 pm edt this afternoon...

.rest of today...east gales to 35 knots becoming northeast 20 to
30 knots late. rain likely by late morning. snow, possibly mixed
with sleet. a slight chance of rain showers by mid afternoon.
waves 7 to 10 feet occasionally to 13 feet subsiding to 5 to
8 feet occasionally to 10 feet. 
.tonight...north winds 15 to 25 knots becoming northwest 20 to
30 knots after midnight. snow showers likely through midnight,
then a slight chance of snow showers after midnight. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming north 15 to
25 knots after midnight. a chance of snow showers, possibly mixed
with rain. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.monday...north winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. freezing spray. snow showers likely
through early afternoon. a slight chance of snow showers 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. 
.monday night...north winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...west winds 10 to 20 knots becoming south 15 to
25 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...south winds 15 to 25 knots becoming west 20 to
30 knots. a chance of rain showers, possibly mixed with snow.
waves subsiding to 3 to 5 feet occasionally to 7 feet, then
building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202604042000;;819637

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 4 2026

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

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

.synopsis...

this morning, lake superior is between a low of 29.8 inches in 
southern wisconsin and a high of 30.6 inches over northern quebec. 
the low deepens to 29.7 inches over the straits of mackinac today 
before further deepening to 29.4 inches over western quebec by 
sunday morning. a weak 30.1 inch trough passes over the lake sunday 
night into monday. monday afternoon, 30.6 inch high pressure resides 
over north dakota before moving over wisconsin tuesday morning. the 
high shifts to the lowert great lakes tuesday night as a 29.5 inch 
low organizes along the montana/saskatchewan border. this low moves 
over the northwest angle wednesday night before moving north of the 
lake through thursday morning.



lsz264-042000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt sat apr 4 2026

...gale warning in effect until 2 pm edt this afternoon...

.rest of today...east winds 20 to 30 knots diminishing to 15 to
25 knots late. snow, possibly mixed with sleet. waves 6 to 9 feet
occasionally to 11 feet subsiding to 4 to 7 feet occasionally to
9 feet. 
.tonight...north winds 10 to 20 knots increasing to 20 to
30 knots after midnight. snow showers likely through midnight,
then a chance of snow showers after midnight. waves subsiding to
3 to 6 feet occasionally to 8 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.sunday...north winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon, then becoming west 10 to 20 knots
late. waves subsiding to 2 to 4 feet. 
.sunday night...north winds 5 to 15 knots increasing to 15 to
25 knots after midnight. a chance of rain showers through
midnight. a chance of snow showers. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.monday...north winds 20 to 30 knots. freezing spray. a chance of
snow showers. waves building to 4 to 8 feet occasionally to
10 feet. 
.monday night...north winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. freezing spray through midnight.
waves subsiding to 1 to 3 feet. 
.tuesday...west winds 10 to 20 knots becoming south 20 to
30 knots. waves subsiding to calm to 2 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.wednesday...south gales to 35 knots veering west. a chance of
rain and snow showers. waves building to 7 to 10 feet
occasionally to 13 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202604042000;;819638

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 4 2026

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

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

.synopsis...

this morning, lake superior is between a low of 29.8 inches in 
southern wisconsin and a high of 30.6 inches over northern quebec. 
the low deepens to 29.7 inches over the straits of mackinac today 
before further deepening to 29.4 inches over western quebec by 
sunday morning. a weak 30.1 inch trough passes over the lake sunday 
night into monday. monday afternoon, 30.6 inch high pressure resides 
over north dakota before moving over wisconsin tuesday morning. the 
high shifts to the lowert great lakes tuesday night as a 29.5 inch 
low organizes along the montana/saskatchewan border. this low moves 
over the northwest angle wednesday night before moving north of the 
lake through thursday morning.



lsz265-042000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt sat apr 4 2026

...gale warning in effect until 2 pm edt this afternoon...

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

$$

fzus63 kmqt 041401
glfls 
expires:202604042000;;819639

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 4 2026

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

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

.synopsis...

this morning, lake superior is between a low of 29.8 inches in 
southern wisconsin and a high of 30.6 inches over northern quebec. 
the low deepens to 29.7 inches over the straits of mackinac today 
before further deepening to 29.4 inches over western quebec by 
sunday morning. a weak 30.1 inch trough passes over the lake sunday 
night into monday. monday afternoon, 30.6 inch high pressure resides 
over north dakota before moving over wisconsin tuesday morning. the 
high shifts to the lowert great lakes tuesday night as a 29.5 inch 
low organizes along the montana/saskatchewan border. this low moves 
over the northwest angle wednesday night before moving north of the 
lake through thursday morning.



lsz266-042000-
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 am edt sat apr 4 2026

...gale warning in effect until 2 pm edt this afternoon...

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

$$

fzus63 kmqt 041401
glfls 
expires:202604042000;;819640

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat apr 4 2026

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

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

.synopsis...

this morning, lake superior is between a low of 29.8 inches in 
southern wisconsin and a high of 30.6 inches over northern quebec. 
the low deepens to 29.7 inches over the straits of mackinac today 
before further deepening to 29.4 inches over western quebec by 
sunday morning. a weak 30.1 inch trough passes over the lake sunday 
night into monday. monday afternoon, 30.6 inch high pressure resides 
over north dakota before moving over wisconsin tuesday morning. the 
high shifts to the lowert great lakes tuesday night as a 29.5 inch 
low organizes along the montana/saskatchewan border. this low moves 
over the northwest angle wednesday night before moving north of the 
lake through thursday morning.



lsz267-042000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt sat apr 4 2026

.rest of today...east winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots.
freezing rain, possibly mixed with snow and sleet by late
morning. rain. sleet by mid afternoon. waves 4 to 7 feet
occasionally to 9 feet subsiding to 2 to 4 feet. 
.tonight...southeast winds 10 to 20 knots becoming west 20 to
30 knots after midnight, then becoming northwest to 30 knots with
a few gale force gusts to 35 knots possible late. a chance of
rain and snow showers. waves subsiding to calm to 2 feet, then
building to 7 to 10 feet occasionally to 13 feet. 
.sunday...northwest winds to 30 knots with a few gale force gusts
to 40 knots possible diminishing to 20 to 30 knots late. a slight
chance of snow showers through early afternoon. waves building to
9 to 12 feet occasionally to 15 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...north winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. a chance of snow showers. freezing spray by mid
afternoon. waves building to 7 to 10 feet occasionally to
13 feet. 
.monday night...north winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. freezing spray. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tuesday...west winds 10 to 20 knots becoming south 20 to
30 knots. waves subsiding to 1 to 3 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.wednesday...south gales to 40 knots. snow showers likely. rain
showers likely. waves building to 7 to 11 feet occasionally to
14 feet. 

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