fzus63 kdtx 060713
glflh 
expires:202604061515;;912706

open lake forecast for lake huron
national weather service detroit/pontiac mi
313 am edt mon apr 6 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 clipper system tracks across lake huron on monday
with colder air rushing in monday night into early tuesday. brief
high pressure follows tuesday. the next low organizes over the
upper midwest wednesday, sending a slow-moving cold front through
on thursday and friday.


lhz361-362-061515-
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-
313 am edt mon apr 6 2026

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


$$

fzus63 kdtx 060713
glflh 
expires:202604061515;;912707

open lake forecast for lake huron
national weather service detroit/pontiac mi
313 am edt mon apr 6 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 clipper system tracks across lake huron on monday
with colder air rushing in monday night into early tuesday. brief
high pressure follows tuesday. the next low organizes over the
upper midwest wednesday, sending a slow-moving cold front through
on thursday and friday.


lhz363-462-061515-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
313 am edt mon apr 6 2026

.today...northwest winds 5 to 10 knots. a chance of snow showers
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in
the late morning and afternoon. 
.tonight...northwest winds 20 to 25 knots. gusts to 30 knots by
midnight. a chance of snow showers. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.tuesday...north winds 15 to 20 knots becoming northwest 5 to
10 knots. waves 6 to 9 feet subsiding to 3 to 5 feet early in the
afternoon. waves occasionally around 12 feet. 
.tuesday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet. 
.wednesday...south winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots late in the afternoon.
waves 4 to 6 feet building to 8 to 12 feet late in the afternoon.
waves occasionally around 15 feet. 
.thursday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 10 to 15 knots. a chance of rain.
waves 8 to 12 feet subsiding to 3 to 5 feet by midnight. waves
occasionally around 15 feet. 
.friday...southwest winds 10 to 15 knots. a chance of rain until
afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet. 


$$

fzus63 kmkx 060813
glflm 
expires:202604061515;;915079

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt mon apr 6 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...

northwest winds will increase today as a small area of low 
pressure around 30.0 inches develops east of lake huron. a few 
gale force gusts are possible over the northern half of the open 
waters during the afternoon hours. 

winds will decrease tonight into tuesday as high pressure around 
30.5 inches moves over and east of the area. some moderate 
freezing spray is possible over the northern half of the lake 
this evening.

low pressure around 29.6 inches will form over the northern great
plains and approach lake michigan tuesday night into wednesday, 
resulting in increasing southerly winds across the waters. winds 
will remain gusty into wednesday night as the low passes north of
lake superior. gale force gusts will be possible with this 
system. 

winds will taper during the day thursday, with high pressure
around 30.4 inches moving from the northern plains toward lake 
superior. showers and a few thunderstorms are forecast wednesday 
into thursday.


lmz261-362-364-366-563-565-567-868-061515-
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-
313 am cdt mon apr 6 2026

sheboygan wi to pentwater mi north...

.today...northwest winds 10 to 20 kt becoming north to 30 kt.
scattered snow showers this morning, then scattered snow and rain
showers this afternoon. waves 2 to 4 ft building to 6 to 9 ft
occasionally to 12 ft. 
.tonight...north winds to 30 kt diminishing to 10 to 20 kt.
freezing spray in the evening. scattered snow showers in the
evening. waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to
8 ft occasionally to 10 ft. 
.tuesday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. 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 15 to
25 kt. waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft. 
.wednesday...south winds to 30 kt increasing to gales to 35 kt.
chance of rain and snow in the morning, then chance of snow in
the afternoon. waves 8 to 12 ft occasionally to 16 ft building to
10 to 14 ft occasionally to 18 ft. 
.wednesday night...south gales to 40 kt. rain. waves 10 to 14 ft
occasionally to 18 ft. 
.thursday...southwest gales to 35 kt diminishing to 30 kt. chance
of rain showers. waves 8 to 11 ft occasionally to 14 ft subsiding
to 5 to 8 ft occasionally to 10 ft. 
.friday...north winds 10 to 15 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 060813
glflm 
expires:202604061515;;915080

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt mon apr 6 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...

northwest winds will increase today as a small area of low 
pressure around 30.0 inches develops east of lake huron. a few 
gale force gusts are possible over the northern half of the open 
waters during the afternoon hours. 

winds will decrease tonight into tuesday as high pressure around 
30.5 inches moves over and east of the area. some moderate 
freezing spray is possible over the northern half of the lake 
this evening.

low pressure around 29.6 inches will form over the northern great
plains and approach lake michigan tuesday night into wednesday, 
resulting in increasing southerly winds across the waters. winds 
will remain gusty into wednesday night as the low passes north of
lake superior. gale force gusts will be possible with this 
system. 

winds will taper during the day thursday, with high pressure
around 30.4 inches moving from the northern plains toward lake 
superior. showers and a few thunderstorms are forecast wednesday 
into thursday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-061515-
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-
313 am cdt mon apr 6 2026

sheboygan wi to pentwater mi south...

.today...northwest winds 10 to 20 kt increasing to 30 kt.
scattered snow showers with isolated rain showers this afternoon.
waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. 
.tonight...north winds to 30 kt diminishing to 10 to 20 kt.
isolated snow showers in the evening. waves 7 to 10 ft
occasionally to 13 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.tuesday...north winds 10 to 15 kt diminishing to 5 to 10 kt late
in the morning, then becoming northeast early in the afternoon
becoming northeast 5 to 10 kt late. waves 5 to 8 ft occasionally
to 10 ft subsiding to 2 to 4 ft. 
.tuesday night...southeast winds 10 to 15 kt increasing to 15 to
25 kt overnight. waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft. 
.wednesday...south winds to 30 kt increasing to gales to 35 kt.
waves 8 to 11 ft occasionally to 14 ft building to 8 to 12 ft
occasionally to 16 ft. 
.wednesday night...south gales to 35 kt. chance of rain. waves
8 to 12 ft occasionally to 16 ft. 
.thursday...southwest winds to 30 kt diminishing to 15 to 25 kt.
chance of rain showers. waves 8 to 11 ft occasionally to 14 ft
subsiding to 5 to 8 ft occasionally to 10 ft. 
.friday...north winds 10 to 15 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 060801
glfls 
expires:202604062000;;913943

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon apr 6 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 weak 30.1 inch trough over the lake this morning departs to the 
southeast, deepening to 30.0 inches over the lower great lakes this 
afternoon. meanwhile, 30.6 inch high pressure resides over north 
dakota before moving over the upper great lakes tuesday morning at 
30.5 inches. the high builds back to 30.6 inches over the lower 
great lakes tuesday night as a 29.5 inch low organizes along the 
montana/saskatchewan border. this low moves over the dakotas 
wednesday night before moving north of the lake through thursday 
morning. high pressure of 30.4 inches then moves over the upper 
great lakes friday, building to 30.5 inches saturday.



lsz162-062000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt mon apr 6 2026 /301 am cdt mon apr 6 2026/

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

$$

fzus63 kmqt 060801
glfls 
expires:202604062000;;913944

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon apr 6 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 weak 30.1 inch trough over the lake this morning departs to the 
southeast, deepening to 30.0 inches over the lower great lakes this 
afternoon. meanwhile, 30.6 inch high pressure resides over north 
dakota before moving over the upper great lakes tuesday morning at 
30.5 inches. the high builds back to 30.6 inches over the lower 
great lakes tuesday night as a 29.5 inch low organizes along the 
montana/saskatchewan border. this low moves over the dakotas 
wednesday night before moving north of the lake through thursday 
morning. high pressure of 30.4 inches then moves over the upper 
great lakes friday, building to 30.5 inches saturday.



lsz263-062000-
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-
401 am edt mon apr 6 2026

...gale warning in effect until 1 pm edt this afternoon...

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

$$

fzus63 kmqt 060801
glfls 
expires:202604062000;;913945

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon apr 6 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 weak 30.1 inch trough over the lake this morning departs to the 
southeast, deepening to 30.0 inches over the lower great lakes this 
afternoon. meanwhile, 30.6 inch high pressure resides over north 
dakota before moving over the upper great lakes tuesday morning at 
30.5 inches. the high builds back to 30.6 inches over the lower 
great lakes tuesday night as a 29.5 inch low organizes along the 
montana/saskatchewan border. this low moves over the dakotas 
wednesday night before moving north of the lake through thursday 
morning. high pressure of 30.4 inches then moves over the upper 
great lakes friday, building to 30.5 inches saturday.



lsz264-062000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt mon apr 6 2026

...heavy freezing spray warning in effect from 8 am edt this
morning through this evening...

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

$$

fzus63 kmqt 060801
glfls 
expires:202604062000;;913946

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon apr 6 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 weak 30.1 inch trough over the lake this morning departs to the 
southeast, deepening to 30.0 inches over the lower great lakes this 
afternoon. meanwhile, 30.6 inch high pressure resides over north 
dakota before moving over the upper great lakes tuesday morning at 
30.5 inches. the high builds back to 30.6 inches over the lower 
great lakes tuesday night as a 29.5 inch low organizes along the 
montana/saskatchewan border. this low moves over the dakotas 
wednesday night before moving north of the lake through thursday 
morning. high pressure of 30.4 inches then moves over the upper 
great lakes friday, building to 30.5 inches saturday.



lsz265-062000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt mon apr 6 2026

...gale warning in effect from 10 am edt this morning through
this afternoon...
...heavy freezing spray warning in effect from noon edt today
through this evening...

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

$$

fzus63 kmqt 060801
glfls 
expires:202604062000;;913947

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon apr 6 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 weak 30.1 inch trough over the lake this morning departs to the 
southeast, deepening to 30.0 inches over the lower great lakes this 
afternoon. meanwhile, 30.6 inch high pressure resides over north 
dakota before moving over the upper great lakes tuesday morning at 
30.5 inches. the high builds back to 30.6 inches over the lower 
great lakes tuesday night as a 29.5 inch low organizes along the 
montana/saskatchewan border. this low moves over the dakotas 
wednesday night before moving north of the lake through thursday 
morning. high pressure of 30.4 inches then moves over the upper 
great lakes friday, building to 30.5 inches saturday.



lsz266-062000-
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-
401 am edt mon apr 6 2026

...gale warning in effect from 10 am edt this morning through
this evening...
...heavy freezing spray warning in effect from noon edt today
through this evening...

.early this morning...north winds 20 to 30 knots. a chance of
snow showers. waves 1 to 3 feet building to 3 to 5 feet
occasionally to 7 feet. 
.today...north gales to 40 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. 
.tonight...north gales to 35 knots diminishing to 20 to 30 knots
after midnight, then becoming northwest 15 to 25 knots late.
freezing spray. a slight chance of snow showers. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon. 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 3 to 6 feet occasionally to 8 feet. 
.wednesday...south gales to 40 knots. snow showers likely. rain
showers by mid afternoon. waves building to 8 to 11 feet
occasionally to 14 feet. 
.wednesday night...south gales to 40 knots becoming southwest
gales to 35 knots after midnight. rain showers through midnight,
then a chance of rain showers after midnight. waves subsiding to
5 to 8 feet occasionally to 10 feet. 
.thursday...west winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to 4 to 8 feet occasionally to 10 feet.
.friday...northwest winds 10 to 20 knots becoming southwest 5 to
15 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

$$

fzus63 kmqt 060801
glfls 
expires:202604062000;;913948

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon apr 6 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 weak 30.1 inch trough over the lake this morning departs to the 
southeast, deepening to 30.0 inches over the lower great lakes this 
afternoon. meanwhile, 30.6 inch high pressure resides over north 
dakota before moving over the upper great lakes tuesday morning at 
30.5 inches. the high builds back to 30.6 inches over the lower 
great lakes tuesday night as a 29.5 inch low organizes along the 
montana/saskatchewan border. this low moves over the dakotas 
wednesday night before moving north of the lake through thursday 
morning. high pressure of 30.4 inches then moves over the upper 
great lakes friday, building to 30.5 inches saturday.



lsz267-062000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt mon apr 6 2026

...gale warning in effect from 1 pm edt this afternoon through
this afternoon...
...heavy freezing spray warning in effect from this afternoon
through late tonight...

.early this morning...north winds 10 to 20 knots. a slight chance
of snow showers. waves 1 to 3 feet. 
.today...northeast winds 15 to 25 knots becoming north gales to
40 knots in the afternoon. a chance of snow showers. freezing
spray by mid afternoon. waves building to 5 to 9 feet
occasionally to 11 feet. 
.tonight...north gales to 35 knots diminishing to 10 to 20 knots.
freezing spray. a slight chance of snow showers. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. a slight chance of snow showers through early afternoon.
waves subsiding to 2 to 4 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...south gales to 35 knots backing southeast by mid
afternoon. snow showers likely through early afternoon, then rain
showers likely by mid afternoon. waves building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday night...south gales to 40 knots. rain showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.friday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 

$$