fzus63 kdtx 171934
glflh 
expires:202608180345;;896127

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt mon aug 17 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...diffuse area of high pressure, 30.00 inches, will hold
across the great lakes through tomorrow morning. a cold front
will then push across the region tomorrow afternoon through
tomorrow evening. this will bring showers and thunderstorms and
will veer winds from southwest to northwest in the wake of the
front.


lhz361-180345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
334 pm edt mon aug 17 2026

.tonight...west winds 5 to 10 knots early in the evening becoming
light and variable...then becoming southwest 5 to 10 knots after
midnight. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots veering to the west
late in the afternoon. a chance of showers and thunderstorms in
the afternoon. waves 1 to 3 feet. 
.tuesday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots after midnight. a chance of showers and
thunderstorms in the evening...then a chance of showers after
midnight. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots becoming west 10 to
15 knots early in the afternoon. waves 2 feet or less. 
.wednesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.thursday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming southwest 5 to 10 knots late
in the afternoon backing to the south. waves 2 feet or less. 
.friday...south winds 5 to 10 knots. a chance of showers in the
late morning and early afternoon. rain showers likely early in
the evening...then a chance of showers by midnight. waves 2 feet
or less. 
.saturday...southwest winds 5 to 10 knots becoming north 10 to
15 knots . a chance of showers. a chance of thunderstorms early
in the evening. waves 1 to 3 feet. 


$$

fzus63 kdtx 171934
glflh 
expires:202608180345;;896128

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt mon aug 17 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...diffuse area of high pressure, 30.00 inches, will hold
across the great lakes through tomorrow morning. a cold front
will then push across the region tomorrow afternoon through
tomorrow evening. this will bring showers and thunderstorms and
will veer winds from southwest to northwest in the wake of the
front.


lhz362-363-180345-
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-
334 pm edt mon aug 17 2026

.tonight...light and variable winds becoming southwest 5 to
10 knots early in the morning. waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots in the late morning and afternoon. a chance of showers
and thunderstorms in the afternoon. waves 1 to 3 feet. 
.tuesday night...north winds 5 to 10 knots backing to the west by
midnight...then becoming northwest 10 to 15 knots after midnight.
a chance of showers and thunderstorms in the evening...then a
chance of showers after midnight. waves 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots veering to the northeast
early in the afternoon. waves 1 to 3 feet. 
.wednesday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming north 5 to 10 knots late in
the afternoon veering to the southeast. waves 2 feet or less. 
.friday...south winds 5 to 10 knots increasing to 10 to 15 knots.
a chance of showers . waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then veering
to the southwest 5 to 10 knots early in the evening increasing to
10 to 15 knots by midnight. a chance of showers. waves 1 to
3 feet building to 2 to 4 feet by midnight. 


$$

fzus63 kdtx 171934
glflh 
expires:202608180345;;896129

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt mon aug 17 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...diffuse area of high pressure, 30.00 inches, will hold
across the great lakes through tomorrow morning. a cold front
will then push across the region tomorrow afternoon through
tomorrow evening. this will bring showers and thunderstorms and
will veer winds from southwest to northwest in the wake of the
front.


lhz462>464-180345-
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-
334 pm edt mon aug 17 2026

.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots backing to the south
late in the afternoon. waves 2 feet or less. 
.tuesday night...south winds 5 to 10 knots becoming west 10 to
15 knots after midnight. a chance of showers and thunderstorms in
the evening...then showers likely after midnight. waves 1 to
3 feet. 
.wednesday...northwest winds 10 to 15 knots becoming north 5 to
10 knots in the late morning and afternoon. a chance of showers
in the morning. waves 1 to 3 feet. 
.wednesday night...light and variable winds becoming east 5 to
10 knots after midnight. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots backing to the north late in
the morning...then veering to the east late in the evening. waves
2 feet or less. 
.friday...south winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. a chance of showers by midnight. waves 2 feet or
less. 
.saturday...southwest winds 5 to 10 knots becoming west 10 to
15 knots by midnight. a chance of showers early in the morning.
rain showers likely until early evening...then a chance of
showers by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 171926
glflm 
expires:202608180315;;895976

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
226 pm cdt mon aug 17 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...

30.1 inch low pressure is approaching lake michigan this 
afternoon, bringing light to variable winds to the open waters. 
the lighter winds will continue into this evening as the high 
continues east. a slow-moving cold front will approach from the 
northern great plains tuesday into wednesday, bringing increasing 
southwest winds and chances for thunderstorms. tuesday evening and
night appears most favored for storm potential, with storm 
chances expected to move well south of the waters on wednesday. an
isolated stronger storm with gusty winds and hail cant be ruled 
out in this activity, though widespread severe weather potential 
appears low at this time. will continue to monitor trends through 
tomorrow. 30.0 inch high pressure will move through the western 
great lakes wednesday through thursday, with light and variable 
winds prevailing across the waters. the next thunderstorm chances 
arrive friday afternoon and evening, when the next cold front is 
expected to move across lake michigan.


lmz261-362-364-366-563-565-567-868-180315-
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-
226 pm cdt mon aug 17 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt becoming southwest. waves 1 to
3 ft. 
.tuesday...southwest winds 10 to 20 kt. slight chance of showers
and thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. waves 2 to 4 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming north 10 to
15 kt. chance of showers and thunderstorms in the evening. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.wednesday...northwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.wednesday night...east winds 10 to 15 kt becoming northeast.
waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt veering to southeast 10 to
20 kt in the afternoon. waves 1 ft or less. 
.thursday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 2 ft. 
.friday...southwest winds to 30 kt. chance of showers. waves 2 to
4 ft. 
.saturday...northwest winds 15 to 25 kt becoming north to 30 kt.
chance of showers. waves 2 to 4 ft.  

$$

fzus63 kmkx 171926
glflm 
expires:202608180315;;895977

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
226 pm cdt mon aug 17 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...

30.1 inch low pressure is approaching lake michigan this 
afternoon, bringing light to variable winds to the open waters. 
the lighter winds will continue into this evening as the high 
continues east. a slow-moving cold front will approach from the 
northern great plains tuesday into wednesday, bringing increasing 
southwest winds and chances for thunderstorms. tuesday evening and
night appears most favored for storm potential, with storm 
chances expected to move well south of the waters on wednesday. an
isolated stronger storm with gusty winds and hail cant be ruled 
out in this activity, though widespread severe weather potential 
appears low at this time. will continue to monitor trends through 
tomorrow. 30.0 inch high pressure will move through the western 
great lakes wednesday through thursday, with light and variable 
winds prevailing across the waters. the next thunderstorm chances 
arrive friday afternoon and evening, when the next cold front is 
expected to move across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-180315-
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-
226 pm cdt mon aug 17 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 15 kt becoming west 10 to 20 kt.
waves 2 to 4 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest. chance of
showers and slight chance of thunderstorms in the afternoon.
waves 2 to 4 ft. 
.tuesday night...southwest winds 10 to 20 kt veering to northwest
10 to 15 kt. chance of showers and thunderstorms in the evening.
waves 2 to 4 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.wednesday night...northeast winds 10 to 20 kt diminishing to
5 to 10 kt overnight. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.thursday night...southeast winds 10 to 20 kt becoming south.
waves 1 to 2 ft. 
.friday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.saturday...west winds 15 to 25 kt becoming northwest. waves 2 to
4 ft.  

$$