fzus63 kmkx 290156
glflm 
expires:202603290915;;461333

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 pm cdt sat mar 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...

widespread gales are not anticipated across the open waters through 
the duration of the forecast period. currently centered over 
indiana, 30.5 inch high pressure will advance into the mid- 
atlantic through tonight as 29.7 inch low pressure builds into 
the northern great plains, resulting in increasing south to 
southwesterly winds across lake michigan. widespread 20-25 knot 
gusts are expected over the northern half of the waters, with a 
few gusts to 30 knots possible over the far northern lake. breezy 
southwest winds will continue through tomorrow as a cold front 
begins to approach the waters from the north. the front will 
gradually advance south across lake michigan sunday night through 
tuesday. this will result in generally east- northeast winds 
across the northern half of the lake with southerly winds further 
south. a few gales are possible over southeastern lake michigan 
monday night, but aren't expected to be widespread. periods of 
showers and thunderstorms will accompany the slow-moving front, 
with a few stronger storms possible monday night and once again on
tuesday. large hail would be the primary threat in any stronger 
storms.

winds will trend northerly behind the departing cold front tuesday 
evening through wednesday. will be monitoring trends for a few gusts 
approaching gale force tuesday evening/night, with the current 
expectation being for any such gusts to be isolated. 30.7 inch 
high pressure will shift from ontario to quebec through the late 
week time period as 29.8 inch low pressure builds into the ohio 
river valley, allowing winds to trend east-northeasterly. 
additional rain and snow will accompany the approaching/passing 
area of low pressure thursday into next weekend.


lmz261-362-364-366-563-565-567-868-290915-
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-
856 pm cdt sat mar 28 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds to 30 kt becoming southwest. waves
5 to 8 ft occasionally to 10 ft. 
.sunday...southwest winds 15 to 25 kt becoming south. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.sunday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.monday...southwest winds 10 to 20 kt backing to northeast 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.monday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. rain likely. waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft. 
.tuesday...south winds 15 to 25 kt veering to northwest. rain
likely with a chance of thunderstorms in the morning, then rain
likely in the afternoon. waves 5 to 8 ft occasionally to 10 ft. 
.tuesday night...northwest winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.wednesday...north winds to 30 kt diminishing to 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.thursday...east winds 15 to 25 kt becoming northeast. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.  

$$

fzus63 kmkx 290156
glflm 
expires:202603290915;;461334

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 pm cdt sat mar 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...

widespread gales are not anticipated across the open waters through 
the duration of the forecast period. currently centered over 
indiana, 30.5 inch high pressure will advance into the mid- 
atlantic through tonight as 29.7 inch low pressure builds into 
the northern great plains, resulting in increasing south to 
southwesterly winds across lake michigan. widespread 20-25 knot 
gusts are expected over the northern half of the waters, with a 
few gusts to 30 knots possible over the far northern lake. breezy 
southwest winds will continue through tomorrow as a cold front 
begins to approach the waters from the north. the front will 
gradually advance south across lake michigan sunday night through 
tuesday. this will result in generally east- northeast winds 
across the northern half of the lake with southerly winds further 
south. a few gales are possible over southeastern lake michigan 
monday night, but aren't expected to be widespread. periods of 
showers and thunderstorms will accompany the slow-moving front, 
with a few stronger storms possible monday night and once again on
tuesday. large hail would be the primary threat in any stronger 
storms.

winds will trend northerly behind the departing cold front tuesday 
evening through wednesday. will be monitoring trends for a few gusts 
approaching gale force tuesday evening/night, with the current 
expectation being for any such gusts to be isolated. 30.7 inch 
high pressure will shift from ontario to quebec through the late 
week time period as 29.8 inch low pressure builds into the ohio 
river valley, allowing winds to trend east-northeasterly. 
additional rain and snow will accompany the approaching/passing 
area of low pressure thursday into next weekend.


lmz080-669-671-673-675-777-779-870-872-874-876-878-290915-
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-
856 pm cdt sat mar 28 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds to 30 kt becoming southwest. waves
4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday...southwest winds 15 to 25 kt becoming south. waves 4 to
6 ft occasionally to 8 ft. 
.sunday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.monday...southwest winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.monday night...south winds 15 to 25 kt increasing to 30 kt.
chance of rain in the evening, then chance of rain and
thunderstorms overnight. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.tuesday...southwest winds to 30 kt. rain likely in the morning,
then rain with a chance of thunderstorms in the afternoon. waves
5 to 8 ft occasionally to 10 ft. 
.tuesday night...northwest winds to 30 kt becoming north. chance
of rain. waves 6 to 9 ft occasionally to 12 ft building to 8 to
11 ft occasionally to 14 ft. 
.wednesday...north winds to 30 kt diminishing to 15 to 25 kt.
waves 8 to 11 ft occasionally to 14 ft. 
.thursday...east winds to 30 kt becoming northeast 15 to 25 kt.
chance of rain and snow. waves 7 to 10 ft occasionally to 13 ft. 

$$