fzus63 kdtx 061951
glflh 
expires:202604070400;;940548

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 pm 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...low pressure, 30.00 inches, drags a cold front across
the great lakes tonight. a brief period of gale force gusts will
be possible late this evening before high pressure, 30.60 inches,
ensures calmer conditions tuesday. unsettled weather returns mid-
week with gusty winds and rain expected.


lhz361-362-070400-
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-
351 pm edt mon apr 6 2026

.tonight...west winds 15 to 20 knots with gusts to around
30 knots becoming north to 30 knots by midnight...then decreasing
to 20 to 25 knots early in the morning. a brief period of gusts to
35 knots is possible late this evening. a chance of snow showers.
waves 8 to 12 feet. waves occasionally around 15 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 late in the afternoon. waves 3 to 5 feet
subsiding to 1 to 3 feet late in the afternoon. 
.tuesday night...west 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 in the late morning and
afternoon. waves 4 to 6 feet building to 6 to 9 feet early in the
afternoon. waves occasionally around 12 feet. 
.wednesday night...southeast winds 20 to 25 knots becoming south
to 30 knots in the late evening and overnight. a chance of rain
after midnight. waves 8 to 12 feet. waves occasionally around
15 feet. 
.thursday...south winds 20 to 25 knots decreasing to 15 to
20 knots late in the morning...then becoming southwest 10 to
15 knots late in the afternoon becoming northwest 5 to 10 knots
late in the evening. a chance of rain in the morning. a chance of
rain late in the evening. waves 8 to 12 feet subsiding to 3 to
5 feet late in the evening. waves occasionally around 15 feet. 
.friday...north winds 5 to 10 knots backing to the northwest by
midnight. a chance of rain and snow early in the morning. waves
1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots veering to the north
early in the evening...then becoming southeast 10 to 15 knots by
midnight. waves 1 to 3 feet building to 2 to 4 feet by midnight. 


$$

fzus63 kdtx 061951
glflh 
expires:202604070400;;940549

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 pm 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...low pressure, 30.00 inches, drags a cold front across
the great lakes tonight. a brief period of gale force gusts will
be possible late this evening before high pressure, 30.60 inches,
ensures calmer conditions tuesday. unsettled weather returns mid-
week with gusty winds and rain expected.


lhz363-462-070400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
351 pm edt mon apr 6 2026

.tonight...southeast winds 10 to 15 knots becoming northwest
20 to 25 knots with gusts to around 30 knots late in the
evening...then increasing to 30 knots after midnight. a brief
period of gusts to 35 knots is possible late this evening. a 
chance of snow showers. waves 8 to 12 feet. waves occasionally 
around 15 feet. 
.tuesday...north winds 15 to 20 knots decreasing to 5 to
10 knots. waves 6 to 9 feet subsiding to 3 to 5 feet 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. waves 3 to 5 feet
building to 5 to 7 feet early in the afternoon. waves
occasionally around 10 feet. 
.wednesday night...south winds 20 to 25 knots. gusts to 30 knots
in the late evening and overnight. a chance of rain after
midnight. waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 5 to 10 knots. a chance of rain. a
chance of rain late in the evening. waves 6 to 9 feet subsiding
to 3 to 5 feet late in the evening. waves occasionally around
12 feet. 
.friday...north winds 5 to 10 knots. a chance of snow early in
the morning. a chance of rain early in the morning. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming north 5 to
10 knots until early evening...then veering to the east by
midnight. waves 1 to 3 feet. 


$$

fzus63 kmkx 061927
glflm 
expires:202604070430;;939972

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
227 pm 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 gales are expected over the north half of the lake this
afternoon and early evening, as low pressure around 29.7 inches 
tracks across the northern great lakes, reaching the lower great 
lakes late tonight. a gale warning is now in effect. some moderate 
freezing spray is possible over the northern half of the lake 
this evening.

winds will decrease late tonight into tuesday as high pressure 
around 30.5 inches moves across central lake michigan tuesday
morning into the early afternoon. 

low pressure around 29.5 inches will then track along the 
canadian border tuesday night and wednesday, then track north of 
lake superior wednesday night into thursday morning. this will
result in breezy south winds which may increase to gale force.
much weaker winds will then take hold by thursday afternoon and
the remainder of the week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-070430-
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-
227 pm cdt mon apr 6 2026

sheboygan wi to pentwater mi south...

.tonight...north winds to 30 kt diminishing to 15 to 25 kt.
isolated snow showers. waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.tuesday...north winds 10 to 20 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. isolated snow showers in the
morning. 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 10 to
20 kt after midnight, then becoming south 15 to 25 kt late. waves
2 to 4 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 showers
in the evening, then rain showers likely overnight. 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. 
.thursday night...south winds 10 to 20 kt backing to east 5 to
10 kt. chance of rain showers. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.friday...north winds 10 to 15 kt. chance of rain showers. waves
1 to 3 ft. 
.saturday...east winds 5 to 10 kt becoming northeast. waves 2 to
4 ft.  

$$

fzus63 kmkx 061927
glflm 
expires:202604070430;;939971

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
227 pm 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 gales are expected over the north half of the lake this
afternoon and early evening, as low pressure around 29.7 inches 
tracks across the northern great lakes, reaching the lower great 
lakes late tonight. a gale warning is now in effect. some moderate 
freezing spray is possible over the northern half of the lake 
this evening.

winds will decrease late tonight into tuesday as high pressure 
around 30.5 inches moves across central lake michigan tuesday
morning into the early afternoon. 

low pressure around 29.5 inches will then track along the 
canadian border tuesday night and wednesday, then track north of 
lake superior wednesday night into thursday morning. this will
result in breezy south winds which may increase to gale force.
much weaker winds will then take hold by thursday afternoon and
the remainder of the week.


lmz567-868-070430-
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-
227 pm cdt mon apr 6 2026

two rivers wi to manistee mi south to sheboygan wi to pentwater
mi...

.tonight...north winds to 30 kt diminishing to 10 to 20 kt.
scattered snow showers this evening. waves 8 to 11 ft
occasionally to 14 ft subsiding to 7 to 10 ft occasionally to
13 ft. 
.tuesday...north winds 10 to 15 kt backing to south. waves 4 to
6 ft occasionally to 8 ft subsiding to 1 to 3 ft. 
.tuesday night...south winds 10 to 15 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 showers in the morning. waves 10 to 14 ft
occasionally to 18 ft. 
.wednesday night...south gales to 40 kt becoming southwest. rain
showers in the evening, then rain showers likely overnight. waves
10 to 14 ft occasionally to 18 ft. 
.thursday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.thursday night...west winds 10 to 15 kt veering to northeast
5 to 10 kt. chance of rain showers. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.friday...north winds 5 to 10 kt increasing to 10 to 15 kt.
chance of rain showers. waves 1 to 3 ft. 
.saturday...east winds 5 to 10 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 061927
glflm 
expires:202604070430;;939970

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
227 pm 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 gales are expected over the north half of the lake this
afternoon and early evening, as low pressure around 29.7 inches 
tracks across the northern great lakes, reaching the lower great 
lakes late tonight. a gale warning is now in effect. some moderate 
freezing spray is possible over the northern half of the lake 
this evening.

winds will decrease late tonight into tuesday as high pressure 
around 30.5 inches moves across central lake michigan tuesday
morning into the early afternoon. 

low pressure around 29.5 inches will then track along the 
canadian border tuesday night and wednesday, then track north of 
lake superior wednesday night into thursday morning. this will
result in breezy south winds which may increase to gale force.
much weaker winds will then take hold by thursday afternoon and
the remainder of the week.


lmz261-362-364-366-563-565-070430-
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-
227 pm cdt mon apr 6 2026

two rivers wi to manistee mi north...

...gale warning in effect until 7 pm cdt this evening...

.tonight...north gales to 35 kt diminishing to 10 to 20 kt.
freezing spray this evening. scattered snow showers this evening.
waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.tuesday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 3 to 5 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 showers in the morning. 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 becoming southwest. rain
showers. waves 10 to 14 ft occasionally to 18 ft. 
.thursday...southwest gales to 35 kt diminishing to 30 kt. waves
8 to 11 ft occasionally to 14 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.thursday night...northwest winds 10 to 20 kt veering to
northeast 5 to 10 kt. chance of rain showers. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.friday...north winds 5 to 10 kt. waves 1 to 3 ft. 
.saturday...southeast winds 5 to 10 kt becoming south 10 to
15 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 062001
glfls 
expires:202604070800;;940810

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 is dropping southeast of the area this 
afternoon, with rising heights the rest of the day as strong 30.6 
inch high pressure centered over the northern plains extends riding 
into the great lakes. this feature moves 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.



lsz266-070800-
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 mon apr 6 2026

...gale warning in effect until 7 pm edt this evening...
...heavy freezing spray warning in effect until 8 pm edt this
evening...

.late this afternoon...north gales to 35 knots. freezing spray. a
slight chance of snow showers. waves 9 to 12 feet occasionally to
15 feet subsiding to 8 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 1 to 3 feet. 
.tuesday night...south winds 10 to 20 knots increasing to gales
to 35 knots. a slight chance of snow showers after midnight.
waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...south gales to 40 knots. snow showers through early
afternoon. rain showers. a slight chance of snow showers by mid
afternoon. waves building to 8 to 11 feet occasionally to
14 feet. 
.wednesday night...south gales to 40 knots becoming southwest
20 to 30 knots after midnight. rain showers likely through
midnight. waves subsiding to 5 to 8 feet occasionally to 10 feet.
.thursday...southwest gales to 35 knots becoming west 20 to
30 knots by mid afternoon. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 20 to
30 knots. a chance of rain showers, possibly mixed with snow.
waves building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202604070800;;940811

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 is dropping southeast of the area this 
afternoon, with rising heights the rest of the day as strong 30.6 
inch high pressure centered over the northern plains extends riding 
into the great lakes. this feature moves 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.



lsz267-070800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt mon apr 6 2026

...gale warning in effect until 6 pm edt this evening...
...heavy freezing spray warning in effect until 2 am edt
tuesday...

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

$$

fzus63 kmqt 062001
glfls 
expires:202604070800;;940806

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 is dropping southeast of the area this 
afternoon, with rising heights the rest of the day as strong 30.6 
inch high pressure centered over the northern plains extends riding 
into the great lakes. this feature moves 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.



lsz162-070800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt mon apr 6 2026 /300 pm cdt mon apr 6 2026/

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

$$

fzus63 kmqt 062001
glfls 
expires:202604070800;;940807

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 is dropping southeast of the area this 
afternoon, with rising heights the rest of the day as strong 30.6 
inch high pressure centered over the northern plains extends riding 
into the great lakes. this feature moves 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.



lsz263-070800-
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 mon apr 6 2026

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

$$

fzus63 kmqt 062001
glfls 
expires:202604070800;;940808

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 is dropping southeast of the area this 
afternoon, with rising heights the rest of the day as strong 30.6 
inch high pressure centered over the northern plains extends riding 
into the great lakes. this feature moves 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.



lsz264-070800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt mon apr 6 2026

...heavy freezing spray warning in effect until 8 pm edt this
evening...

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

$$

fzus63 kmqt 062001
glfls 
expires:202604070800;;940809

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 is dropping southeast of the area this 
afternoon, with rising heights the rest of the day as strong 30.6 
inch high pressure centered over the northern plains extends riding 
into the great lakes. this feature moves 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.



lsz265-070800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt mon apr 6 2026

...gale warning in effect until 6 pm edt this evening...
...heavy freezing spray warning in effect until 8 pm edt this
evening...

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

$$