fzus63 kdtx 042000
glflh 
expires:202604050400;;835126

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm 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.


lhz363-462-050400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
400 pm edt sat apr 4 2026

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


$$

fzus63 kdtx 042000
glflh 
expires:202604050400;;835125

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm 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.


lhz361-362-050400-
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-
400 pm edt sat apr 4 2026

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

.tonight...southeast winds 10 to 15 knots veering to the
southwest late in the evening...then increasing to 15 to 20 knots
with gusts to around 30 knots after midnight. a chance of rain in
the evening. waves 4 to 6 feet. waves occasionally around 8 feet.
.sunday...west winds 20 to 25 knots. gusts to 35 knot gales. a
chance of snow in the morning. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots in the late evening
and overnight. 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 10 to
15 knots early in the afternoon. a chance of snow in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon. 
.monday night...northwest winds 20 to 25 knots increasing to
30 knots by midnight...then becoming north 20 to 25 knots after
midnight. a chance of snow. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.tuesday...northwest winds 10 to 15 knots backing to the south
late in the evening. waves 6 to 9 feet subsiding to 3 to 5 feet
late in the morning...then subsiding to 1 to 3 feet late in the
afternoon building to 3 to 5 feet late in the evening. waves
occasionally around 12 feet. 
.wednesday...south winds 15 to 20 knots increasing to 30 knots
with gusts to 35 knot gales. a chance of rain. waves 8 to 12 feet
building to 10 to 14 feet . waves occasionally around 18 feet. 
.thursday...southwest winds to 30 knots with gusts to 35 knot
gales becoming west 20 to 25 knots with gusts to around 30 knots
in the late morning and early afternoon...then decreasing to
15 to 20 knots early in the evening becoming northwest 10 to
15 knots by midnight. a chance of rain...then a chance of rain
and snow by midnight. waves 8 to 12 feet subsiding to 4 to 6 feet
by midnight. waves occasionally around 15 feet. 


$$

fzus63 kmkx 041954
glflm 
expires:202604050315;;834895

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 pm 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...

winds will continue to veer southwest and accelerate this
afternoon as low pressure around 29.6 inches crosses northern 
portions of the lake. as low pressure exits into ontario and 
deepens to 29.3 inches, expect winds to become due westerly and 
gust to 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 drag a cold front southward across the lake,
bringing northwest winds late sunday night into monday morning.
winds intensify and turn north as strong high pressure around 
30.6 inches moves southeastward across minnesota / wisconsin 
late monday afternoon into monday night. gusts upwards of 30 kt 
expected, but just shy of gale force. 

light and variable winds for the daytime hours of tuesday as 
the aforementioned high pressure weakens and crosses the lake.
as it drifts further east and low pressure tracks into the 
northern plains, a period of southerly gales is possible mid 
week.


lmz261-362-364-366-563-565-567-868-050315-
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-
254 pm cdt sat apr 4 2026

sheboygan wi to pentwater mi north...

.tonight...southwest winds to 30 kt becoming west late. a few 
gusts to gale force possible. waves 4 to 6 ft occasionally to 8 ft
building to 7 to 10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt becoming west 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 3 to 5 ft. 
.sunday night...west winds 10 to 20 kt. chance of rain showers in
the evening. waves 2 to 4 ft. 
.monday...northwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. chance of snow showers in the afternoon. waves 3 to
5 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday night...north winds to 30 kt. a few gusts to gale force 
possible. freezing spray in the evening. waves 7 to 10 ft 
occasionally to 13 ft. 
.tuesday...northwest winds 10 to 15 kt backing to southwest.
waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft. 
.tuesday night...south winds 10 to 20 kt increasing to 30 kt.
waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. 
.wednesday...south gales to 35 kt. chance of rain and snow
showers. waves 10 to 14 ft occasionally to 18 ft building to
12 to 16 ft occasionally to 21 ft. 
.thursday...west gales to 35 kt becoming northwest 15 to 25 kt.
chance of rain showers. waves 10 to 14 ft occasionally to 18 ft
subsiding to 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 041954
glflm 
expires:202604050315;;834896

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 pm 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...

winds will continue to veer southwest and accelerate this
afternoon as low pressure around 29.6 inches crosses northern 
portions of the lake. as low pressure exits into ontario and 
deepens to 29.3 inches, expect winds to become due westerly and 
gust to 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 drag a cold front southward across the lake,
bringing northwest winds late sunday night into monday morning.
winds intensify and turn north as strong high pressure around 
30.6 inches moves southeastward across minnesota / wisconsin 
late monday afternoon into monday night. gusts upwards of 30 kt 
expected, but just shy of gale force. 

light and variable winds for the daytime hours of tuesday as 
the aforementioned high pressure weakens and crosses the lake.
as it drifts further east and low pressure tracks into the 
northern plains, a period of southerly gales is possible mid 
week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-050315-
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-
254 pm cdt sat apr 4 2026

sheboygan wi to pentwater mi south...

.tonight...west winds to 30 kt. waves 4 to 6 ft occasionally to
8 ft building to 7 to 10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt becoming west 10 to 20 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.sunday night...southwest winds 10 to 15 kt becoming northwest
10 to 20 kt. chance of rain showers. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.monday...northwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. waves 4 to 6 ft occasionally to 8 ft building to 6 to
9 ft occasionally to 12 ft. 
.monday night...north winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft. 
.tuesday...north winds 10 to 20 kt becoming northeast 5 to 10 kt
in the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding
to 3 to 5 ft. 
.tuesday night...southeast winds 10 to 20 kt increasing to 30 kt.
waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. 
.wednesday...south gales to 35 kt. waves 10 to 14 ft occasionally
to 18 ft. 
.thursday...southwest winds to 30 kt becoming northwest 10 to
20 kt. chance of rain showers. waves 8 to 12 ft occasionally to
16 ft subsiding to 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmqt 042001
glfls 
expires:202604050800;;835231

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

a 29.7 inch low over northern lake michigan tracks over the straits 
of mackinac this evening 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 lower 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.



lsz264-050800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt sat apr 4 2026

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

$$

fzus63 kmqt 042001
glfls 
expires:202604050800;;835232

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

a 29.7 inch low over northern lake michigan tracks over the straits 
of mackinac this evening 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 lower 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.



lsz265-050800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sat apr 4 2026

...gale warning in effect from 3 am edt sunday through sunday
morning...

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

$$

fzus63 kmqt 042001
glfls 
expires:202604050800;;835233

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

a 29.7 inch low over northern lake michigan tracks over the straits 
of mackinac this evening 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 lower 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.



lsz266-050800-
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 sat apr 4 2026

...gale warning in effect from 3 am edt sunday through sunday
morning...

.late this afternoon...east winds 15 to 25 knots. snow showers
likely, possibly mixed with rain showers and sleet. waves 4 to
8 feet occasionally to 10 feet. 
.tonight...west winds 15 to 25 knots becoming northwest gales to
40 knots after midnight. a chance of rain and snow showers. 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. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. 
.sunday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots late. a 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 6 feet occasionally to 8 feet. 
.tuesday...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.tuesday night...south winds 15 to 25 knots increasing to gales
to 35 knots after midnight. waves building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday...south gales to 45 knots becoming southwest gales to
40 knots. rain and snow showers likely, then a chance of rain
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 8 to 11 feet occasionally to 14 feet. 
.thursday...northwest gales to 35 knots becoming east 15 to
25 knots. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202604050800;;835234

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

a 29.7 inch low over northern lake michigan tracks over the straits 
of mackinac this evening 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 lower 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.



lsz267-050800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt sat apr 4 2026

...gale warning in effect from 3 am edt sunday through sunday
morning...

.late this afternoon...east winds 15 to 25 knots. a chance of
rain showers. waves 3 to 6 feet occasionally to 8 feet subsiding
to 2 to 4 feet. 
.tonight...southwest winds 15 to 25 knots becoming west 20 to
30 knots after midnight, then becoming northwest gales to
40 knots late. a chance of snow showers, possibly mixed with
rain. waves subsiding to 1 to 3 feet, then building to 7 to
10 feet occasionally to 13 feet. 
.sunday...northwest gales to 40 knots 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, then veering north late. a slight
chance of snow showers after midnight. waves subsiding to 1 to
3 feet. 
.monday...north winds 20 to 30 knots increasing to gales to
35 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. waves subsiding to 2 to
4 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...south gales to 40 knots veering southwest. snow
showers likely. rain showers. waves building to 7 to 11 feet
occasionally to 14 feet. 
.thursday...northwest winds 20 to 30 knots becoming east 10 to
20 knots. a chance of rain showers. waves subsiding to 2 to
4 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202604050800;;835230

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

a 29.7 inch low over northern lake michigan tracks over the straits 
of mackinac this evening 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 lower 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.



lsz263-050800-
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 sat apr 4 2026

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

$$

fzus63 kmqt 042001
glfls 
expires:202604050800;;835229

open lake forecast for lake superior
national weather service marquette mi
400 pm 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...

a 29.7 inch low over northern lake michigan tracks over the straits 
of mackinac this evening 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 lower 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.



lsz162-050800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat apr 4 2026 /300 pm cdt sat apr 4 2026/

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

$$