fzus63 kdtx 291944
glfsc 
expires:202609300345;;262952

lake st clair forecast
national weather service detroit/pontiac mi
344 pm edt tue sep 29 2026

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, 30.10 inches, exits east of the central
great lakes this evening. southwest winds then slowly increase
through tomorrow, ahead of a cold front. this front looks to get
hung up over southern lower michigan, leading to occasional
showers in the wednesday to friday timeframe.


lcz460-300345-
lake st clair-
344 pm edt tue sep 29 2026

.tonight...south winds 5 to 10 knots. mostly clear this evening
becoming mostly cloudy. waves 2 feet or less.
.wednesday...southwest winds 5 to 10 knots increasing to 10 to 15
knots late in the morning...then becoming south 5 to 10 knots in the
afternoon. mostly cloudy. a chance of light rain late in the
afternoon. waves 2 feet or less.
.wednesday night...south winds 10 to 15 knots. cloudy with a chance
of light rain. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots diminishing to 5 to 10
knots in the late morning and afternoon. mostly cloudy. light rain
likely until late afternoon...then a chance of light rain early in
the afternoon. waves 2 feet or less.
.thursday night...southwest winds 5 to 10 knots becoming north 10 to
15 knots after midnight. a chance of light rain early in the
evening...then light rain likely by midnight. rain after midnight.
waves 2 feet or less.
.friday...north winds 10 to 15 knots. cloudy with rain in the
morning...then partly cloudy in the afternoon and evening. waves 2
feet or less.
.saturday...east winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.sunday...northwest winds 10 to 15 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 291944
glflh 
expires:202609300345;;262950

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt tue sep 29 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, 30.10 inches, exits east of the central
great lakes this evening. southwest winds then slowly increase
through tomorrow, ahead of a cold front. this front looks to get
hung up over southern lower michigan, leading to occasional
showers in the wednesday to friday timeframe.


lhz462>464-300345-
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-
344 pm edt tue sep 29 2026

.tonight...southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. waves 2 feet or less.
.wednesday...south winds 10 to 15 knots. a chance of rain in the
afternoon. waves 1 to 3 feet. 
.wednesday night...south winds 10 to 15 knots. a chance of rain
in the evening...then rain likely after midnight. waves 2 to
4 feet. 
.thursday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. rain likely. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the afternoon. 
.thursday night...southwest winds 5 to 10 knots becoming north
10 to 15 knots in the late evening and overnight. rain likely.
waves 1 to 3 feet building to 2 to 4 feet after midnight. 
.friday...north winds 10 to 15 knots increasing to 15 to
20 knots. a chance of rain. waves 2 to 4 feet. 
.saturday...north winds 10 to 15 knots becoming northeast 5 to
10 knots until early evening...then veering to the east by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...south winds 5 to 10 knots veering to the southwest in
the late morning and early afternoon...then becoming west 10 to
15 knots early in the evening becoming northwest 15 to 20 knots
by midnight. waves 2 feet or less building to 5 to 7 feet. waves
occasionally around 10 feet. 


$$

fzus63 kmkx 291942
glflm 
expires:202609300315;;262865

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt tue sep 29 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...

southerly winds will increase tonight into wednesday, becoming 
southwest wednesday night into thursday, as a cold front 
approaches from the northern plains. wind gusts to 30 knots are 
possible wednesday into wednesday evening, along with building 
waves, particularly across central and northern portions of the 
lake.

expect northwest winds in the wake of the front thursday 
afternoon, with north to northeast winds thursday night into 
friday. strong high pressure around 30.4 inches will overspread 
the great lakes friday night. a fast-moving low pressure system 
around 29.8 inches should move across or north of lake superior 
saturday night, with high pressure around 30.4 inches moving 
southeast into the region by early next week. northwest to north 
winds should result across lake michigan.


lmz261-362-364-366-563-565-567-868-300315-
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-
242 pm cdt tue sep 29 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt increasing to 30 kt. slight
chance of showers this evening, then showers overnight. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.wednesday...south winds to 30 kt becoming southwest. chance of
showers in the morning, then slight chance of showers in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday night...southwest winds to 30 kt diminishing to 10 to
20 kt. chance of showers overnight. waves 6 to 9 ft occasionally
to 12 ft subsiding to 3 to 5 ft. 
.thursday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt. chance of showers in
the evening. waves 1 to 2 ft building to 2 to 4 ft. 
.friday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt. waves 1 to 3 ft. 
.saturday...southeast winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.sunday...west winds 15 to 25 kt becoming northwest to 30 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 291942
glflm 
expires:202609300315;;262866

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt tue sep 29 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...

southerly winds will increase tonight into wednesday, becoming 
southwest wednesday night into thursday, as a cold front 
approaches from the northern plains. wind gusts to 30 knots are 
possible wednesday into wednesday evening, along with building 
waves, particularly across central and northern portions of the 
lake.

expect northwest winds in the wake of the front thursday 
afternoon, with north to northeast winds thursday night into 
friday. strong high pressure around 30.4 inches will overspread 
the great lakes friday night. a fast-moving low pressure system 
around 29.8 inches should move across or north of lake superior 
saturday night, with high pressure around 30.4 inches moving 
southeast into the region by early next week. northwest to north 
winds should result across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300315-
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-
242 pm cdt tue sep 29 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt. chance of showers overnight.
waves 3 to 5 ft. 
.wednesday...south winds 15 to 25 kt increasing to 30 kt. showers
in the morning, then showers likely in the afternoon. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.wednesday night...south winds to 30 kt becoming southwest 10 to
20 kt. chance of showers in the evening, then showers overnight.
waves 6 to 9 ft occasionally to 12 ft subsiding to 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt becoming northwest.
showers. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.thursday night...north winds 10 to 20 kt. showers in the
evening, then chance of showers overnight. waves 1 to 3 ft
building to 4 to 6 ft occasionally to 8 ft. 
.friday...northeast winds 10 to 20 kt becoming north 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.friday night...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft. 
.saturday...east winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 2 to
4 ft.  

$$