fzus63 kdtx 281946
glflh 
expires:202608290400;;515837

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm edt fri aug 28 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz361-290400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
346 pm edt fri aug 28 2026

.tonight...light and variable winds becoming south 5 to 10 knots
in the late evening and overnight. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots backing to the
northeast late in the afternoon. waves 2 feet or less. 
.saturday night...south winds 5 to 10 knots veering to the
southwest in the late evening and overnight. a chance of showers
after midnight. waves 2 feet or less. 
.sunday...south winds 5 to 10 knots backing to the southeast
early in the afternoon. a chance of showers. waves 2 feet or
less. 
.sunday night...east winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.monday...east winds 10 to 15 knots becoming southeast 5 to
10 knots late in the evening. showers likely. a chance of
thunderstorms. a chance of showers late in the afternoon. waves
1 to 3 feet. 
.tuesday...south winds 5 to 10 knots veering to the southwest . a
chance of showers early in the morning. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 281946
glflh 
expires:202608290400;;515838

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm edt fri aug 28 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz362-363-290400-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
346 pm edt fri aug 28 2026

.tonight...southeast winds 5 to 10 knots becoming south 10 to
15 knots after midnight. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday night...southeast winds 5 to 10 knots veering to the
southwest in the late evening and overnight. a chance of showers
after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight. 
.sunday...south winds 5 to 10 knots. a chance of showers. waves
2 feet or less. 
.sunday night...southeast winds 5 to 10 knots. a chance of
showers. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon...then decreasing to 5 to 10 knots
late in the evening. a chance of showers. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. a chance of showers. waves
2 feet or less. 
.wednesday...southwest winds 5 to 10 knots backing to the south
early in the evening...then backing to the south 5 to 10 knots by
midnight. a chance of showers. waves 2 feet or less. 


$$

fzus63 kdtx 281946
glflh 
expires:202608290400;;515839

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm edt fri aug 28 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz462>464-290400-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
346 pm edt fri aug 28 2026

.tonight...east winds 5 to 10 knots veering to the southeast late
in the evening...then becoming south 10 to 15 knots after
midnight. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...south winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 10 knots backing to the south in
the late morning and afternoon. a chance of showers in the
afternoon. waves 2 feet or less. 
.sunday night...southeast winds 5 to 10 knots. a chance of
showers. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots becoming south 10 to
15 knots late in the evening. a chance of showers. waves 2 feet
or less. 
.tuesday...south winds 5 to 10 knots. a chance of showers...then
a chance of showers and thunderstorms by midnight. waves 2 feet
or less. 
.wednesday...southwest winds 5 to 10 knots veering to the west by
midnight. a chance of showers. waves 2 feet or less. 


$$

fzus63 kmkx 281955
glflm 
expires:202608290315;;515946

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 pm cdt fri aug 28 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...

high pressure around 30.1 inch will dominate the great lakes
region through tonight, moving into the northeast into saturday
as low pressure deepens to around 29.6 inches in the great
plains. this will allow for strengthening southwesterly winds
into sunday. a warm front from this low will lead to
thunderstorm potential in the northern half of the lake saturday
afternoon. low pressure is expected to lift into the northern 
plains sunday into monday, bringing chances for thunderstorms 
to the rest of the lake as well. low pressure lifts into
northern manitoba monday night, with winds remaining
southwesterly through wednesday. off and on thunderstorms are 
possible through wednesday as well.


lmz261-362-364-366-563-565-567-868-290315-
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-
255 pm cdt fri aug 28 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt becoming southwest. waves 2 to
4 ft. 
.saturday...southwest winds 10 to 20 kt increasing to 30 kt.
chance of showers in the afternoon. waves 3 to 5 ft. 
.saturday night...southwest winds to 30 kt becoming south 15 to
25 kt. chance of showers. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...south winds to 30 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft. 
.sunday night...southeast winds 15 to 25 kt becoming south 10 to
20 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.monday...south winds 15 to 25 kt. chance of showers. waves 3 to
5 ft. 
.monday night...south winds 15 to 25 kt becoming southwest 10 to
15 kt. waves 3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt. chance of showers. waves
1 to 3 ft. 
.wednesday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 281955
glflm 
expires:202608290315;;515947

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 pm cdt fri aug 28 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...

high pressure around 30.1 inch will dominate the great lakes
region through tonight, moving into the northeast into saturday
as low pressure deepens to around 29.6 inches in the great
plains. this will allow for strengthening southwesterly winds
into sunday. a warm front from this low will lead to
thunderstorm potential in the northern half of the lake saturday
afternoon. low pressure is expected to lift into the northern 
plains sunday into monday, bringing chances for thunderstorms 
to the rest of the lake as well. low pressure lifts into
northern manitoba monday night, with winds remaining
southwesterly through wednesday. off and on thunderstorms are 
possible through wednesday as well.


lmz080-669-671-673-675-777-779-870-872-874-876-878-290315-
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-
255 pm cdt fri aug 28 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt becoming southwest. waves 2 to
4 ft. 
.saturday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. chance of showers in the afternoon. waves 3 to 5 ft. 
.saturday night...south winds 15 to 25 kt. chance of showers.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday...south winds to 30 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft. 
.sunday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.monday...south winds 15 to 25 kt. waves 3 to 5 ft. 
.monday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.tuesday...southwest winds 10 to 15 kt. chance of showers. waves
2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516108

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri aug 28 2026 /301 pm cdt fri aug 28 2026/

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves building to 1 to 3 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. a chance of showers. waves 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming northwest 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing northeast.
waves calm to 2 feet. 

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516109

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz263-290800-
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 pm edt fri aug 28 2026

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering south late.
waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots becoming east
less than 10 knots late. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. a chance of showers. waves building to 1 to
3 feet. 
.monday night...west winds 5 to 15 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.wednesday...west winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516110

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz264-290800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt fri aug 28 2026

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest less than
10 knots late. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast in the
afternoon, then diminishing to less than 10 knots late. a slight
chance of showers by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds less than 10 knots increasing
to 5 to 15 knots after midnight, then becoming east less than
10 knots late. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of showers. waves calm to
2 feet. 
.monday...southeast winds 15 to 25 knots. a chance of showers
through early afternoon. showers likely by mid afternoon. waves
building to 2 to 4 feet. 
.monday night...southeast winds 5 to 15 knots veering west after
midnight. a chance of showers. waves subsiding to calm to 2 feet.
.tuesday...southwest winds 10 to 20 knots veering west. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516111

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz265-290800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt fri aug 28 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 10 to 20 knots becoming south 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast in the
afternoon, then increasing to 10 to 20 knots late. a chance of
showers and a slight chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots diminishing to 5 to
15 knots late. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight. a chance of showers. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. a chance of showers.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.monday night...south winds 10 to 20 knots veering west after
midnight. a chance of showers. waves subsiding to calm to 2 feet.
.tuesday...west winds 10 to 20 knots. waves calm to 2 feet. 
.wednesday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516112

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz266-290800-
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 pm edt fri aug 28 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast in the
afternoon, then increasing to 10 to 20 knots late. a chance of
showers and a slight chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots. a slight chance of
showers. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight. a chance of showers. waves calm to 2 feet. 
.monday...southeast winds 15 to 25 knots. a chance of showers.
waves building to 2 to 4 feet. 
.monday night...south winds 10 to 20 knots veering southwest
after midnight. a chance of showers. waves subsiding to calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516113

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz267-290800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt fri aug 28 2026

.late this afternoon...northeast winds less than 10 knots. waves
calm to 2 feet. 
.tonight...southeast winds less than 10 knots increasing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast in the
afternoon. a slight chance of showers by mid afternoon. waves
calm to 2 feet. 
.saturday night...south winds 10 to 20 knots diminishing to 5 to
15 knots late. a slight chance of thunderstorms through midnight.
a slight chance of showers. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight. a chance of showers. waves calm to 2 feet. 
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of showers. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. a chance of showers. waves subsiding to calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$