fzus63 kmkx 240148
glflm 
expires:202604240930;;883449

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
848 pm cdt thu apr 23 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...

areas of fog will continue over the lake into friday due to 
relatively mild and moist air flowing over the cold lake. modest 
south to southeast winds will persist into friday as a trough of 
low pressure and cold front approaches from minnesota and iowa. 
however, breezy easterly winds are expected over the northern tip 
of the lake through friday afternoon, as the warm front will 
stall before reaching the upper peninsula. 

the low will pull a cold front across lake michigan friday afternoon 
and evening, resulting in modest northwest to north winds. 
showers and thunderstorms are expected late tonight through 
friday, both ahead of and along the front. severe weather is not 
anticipated at this time.

light north winds on saturday will then become easterly saturday
night and sunday before increasing into monday. 29.4 inch low 
pressure is forecast to track northeastward from the central great
plains (sunday night) near or over lake michigan (monday night), 
with gusty east to southeast winds ahead of its arrival and gusty 
west winds behind it (into tuesday). not seeing widespread gale 
potential with this system, though trends will be monitored.


lmz364-366-563-565-567-868-240930-
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-
848 pm cdt thu apr 23 2026

rock island passage to charlevoix mi south to sheboygan wi to
pentwater mi...

.rest of tonight...southeast winds 10 to 20 kt. chance of rain
showers and thunderstorms overnight. waves 3 to 5 ft. 
.friday...southeast winds 10 to 20 kt veering to west. patchy
fog. chance of rain showers and slight chance of thunderstorms in
the morning, then chance of rain showers and thunderstorms in the
afternoon. waves 3 to 5 ft. 
.friday night...north winds 10 to 20 kt. patchy fog in the
evening. waves 2 to 4 ft. 
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt overnight. waves 1 to 3 ft. 
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.sunday night...northeast winds 10 to 15 kt becoming southeast
10 to 20 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.monday...east winds 15 to 25 kt becoming southeast to 30 kt.
waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft. 
.tuesday...southwest winds to 30 kt. chance of rain showers.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft.  

$$

fzus63 kmkx 240148
glflm 
expires:202604240930;;883450

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
848 pm cdt thu apr 23 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...

areas of fog will continue over the lake into friday due to 
relatively mild and moist air flowing over the cold lake. modest 
south to southeast winds will persist into friday as a trough of 
low pressure and cold front approaches from minnesota and iowa. 
however, breezy easterly winds are expected over the northern tip 
of the lake through friday afternoon, as the warm front will 
stall before reaching the upper peninsula. 

the low will pull a cold front across lake michigan friday afternoon 
and evening, resulting in modest northwest to north winds. 
showers and thunderstorms are expected late tonight through 
friday, both ahead of and along the front. severe weather is not 
anticipated at this time.

light north winds on saturday will then become easterly saturday
night and sunday before increasing into monday. 29.4 inch low 
pressure is forecast to track northeastward from the central great
plains (sunday night) near or over lake michigan (monday night), 
with gusty east to southeast winds ahead of its arrival and gusty 
west winds behind it (into tuesday). not seeing widespread gale 
potential with this system, though trends will be monitored.


lmz080-669-671-673-675-777-779-870-872-874-876-878-240930-
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-
848 pm cdt thu apr 23 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 10 to 20 kt. chance of rain
showers and thunderstorms overnight. waves 3 to 5 ft. 
.friday...south winds 10 to 20 kt veering to west. chance of rain
showers and thunderstorms in the morning, then chance of rain
showers and slight chance of thunderstorms in the afternoon.
waves 3 to 5 ft. 
.friday night...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 2 to 4 ft. 
.saturday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt becoming east 10 to
15 kt. waves 2 to 4 ft. 
.sunday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.sunday night...east winds 10 to 20 kt. waves 2 to 4 ft building
to 4 to 6 ft occasionally to 8 ft. 
.monday...southeast winds to 30 kt. chance of rain showers and
thunderstorms. waves 5 to 8 ft occasionally to 10 ft building to
8 to 11 ft occasionally to 14 ft. 
.tuesday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft.  

$$