fzus63 kmkx 132009
glflm 
expires:202603140315;;619521

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
309 pm cdt fri mar 13 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...

strong low pressure around 29.2 inches will cross lake huron 
tonight. strong west winds will veer northwest this evening. 
widespread gale force gusts are expected across the northern half 
of the open waters this evening, where a gale warning remains in 
effect.

storm force gusts are expected across the southern half of the 
open waters until early evening. a storm warning is in effect for
that period. a gale warning is then in effect for the rest of this
evening. some light freezing spray may occur over northern lake 
michigan this evening.

winds will diminish later tonight through saturday, as high 
pressure around 30.2 inches builds into the northern great plains 
and crosses the open waters. east northeast winds will steadily 
increase saturday night through sunday, as a second low pressure 
system around 29.4 inches forms in the central great plains. the 
low will progress over far southern lake michigan sunday night as
it deepens toward 29.1 inches, resulting in strong northerly
winds developing.

strong winds will shift out of the northwest monday, as the 
strong low continues to move into ontario. expect another 
prolonged period of gales, if not storm force gusts, across all of
the open waters and nearshore waters early sunday morning through
monday night. gale watches or storm watches are likely for this 
period.

prolonged snow is expected saturday night through monday, some of
which could be heavy, over northern portions of the lake. sleet 
or freezing rain should mix in with rain and snow over southern 
lake michigan saturday night into sunday, with mainly rain and 
perhaps a few thunderstorms in the far southern portions of the 
lake sunday into sunday evening. snow is then expected over
southern portions of the lake sunday night into monday night.

freezing spray potential will increase monday and linger into
tuesday behind the departing low, with areas of moderate to heavy
freezing spray possible. trends will be monitored in coming 
forecasts for potential headlines.


lmz261-362-364-366-563-565-567-868-140315-
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-
309 pm cdt fri mar 13 2026

sheboygan wi to pentwater mi north...

...gale warning in effect until 1 am cdt saturday...

.tonight...north to northwest gales to 45 kt this evening, 
becoming northwest to 30 kt later tonight. chance of snow this 
evening. waves 14 to 18 ft occasionally to 23 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.saturday...northwest winds 10 to 20 kt diminishing to 5 to 10 kt
late in the morning, then becoming northwest 5 to 10 kt early in
the afternoon backing to south late. waves 4 to 6 ft occasionally
to 8 ft subsiding to 1 to 3 ft. 
.saturday night...southeast winds 10 to 15 kt becoming east to
30 kt. chance of snow in the evening, then snow, sleet and
freezing rain overnight. waves 1 to 2 ft building to 7 to 10 ft
occasionally to 13 ft. 
.sunday...east gales to 40 kt becoming northeast gales to 45 kt.
visibility one quarter mile or less at times. snow, light sleet,
rain and freezing rain in the morning, then snow, rain and
freezing rain in the afternoon. waves 8 to 12 ft occasionally to
16 ft building to 12 to 16 ft occasionally to 21 ft. 
.sunday night...northeast storm force winds to 50 kt becoming
north storm force winds to 55 kt. visibility one quarter mile or
less at times. snow. waves 18 to 23 ft occasionally to 30 ft. 
.monday...north storm force winds to 55 kt becoming northwest.
visibility one quarter mile or less at times. snow. waves 18 to
23 ft occasionally to 30 ft. 
.monday night...northwest storm force winds to 55 kt diminishing
to gales to 45 kt. chance of snow. visibility one quarter mile or
less at times. waves 18 to 23 ft occasionally to 30 ft. 
.tuesday...northwest gales to 35 kt diminishing to 15 to 25 kt.
heavy freezing spray. waves 12 to 16 ft occasionally to 21 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.wednesday...south winds to 30 kt. freezing spray. chance of
snow. waves 8 to 12 ft occasionally to 16 ft.  

$$

fzus63 kmkx 132009
glflm 
expires:202603140315;;619522

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
309 pm cdt fri mar 13 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...

strong low pressure around 29.2 inches will cross lake huron 
tonight. strong west winds will veer northwest this evening. 
widespread gale force gusts are expected across the northern half 
of the open waters this evening, where a gale warning remains in 
effect.

storm force gusts are expected across the southern half of the 
open waters until early evening. a storm warning is in effect for
that period. a gale warning is then in effect for the rest of this
evening. some light freezing spray may occur over northern lake 
michigan this evening.

winds will diminish later tonight through saturday, as high 
pressure around 30.2 inches builds into the northern great plains 
and crosses the open waters. east northeast winds will steadily 
increase saturday night through sunday, as a second low pressure 
system around 29.4 inches forms in the central great plains. the 
low will progress over far southern lake michigan sunday night as
it deepens toward 29.1 inches, resulting in strong northerly
winds developing.

strong winds will shift out of the northwest monday, as the 
strong low continues to move into ontario. expect another 
prolonged period of gales, if not storm force gusts, across all of
the open waters and nearshore waters early sunday morning through
monday night. gale watches or storm watches are likely for this 
period.

prolonged snow is expected saturday night through monday, some of
which could be heavy, over northern portions of the lake. sleet 
or freezing rain should mix in with rain and snow over southern 
lake michigan saturday night into sunday, with mainly rain and 
perhaps a few thunderstorms in the far southern portions of the 
lake sunday into sunday evening. snow is then expected over
southern portions of the lake sunday night into monday night.

freezing spray potential will increase monday and linger into
tuesday behind the departing low, with areas of moderate to heavy
freezing spray possible. trends will be monitored in coming 
forecasts for potential headlines.


lmz080-669-671-673-675-777-779-870-872-874-876-878-140315-
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-
309 pm cdt fri mar 13 2026

sheboygan wi to pentwater mi south...

...storm warning in effect until 8 pm cdt this evening...
...gale warning in effect from 8 pm this evening to 1 am cdt
saturday...

.tonight...northwest storm force winds to 50 kt, becoming gales 
to 45 kt early this evening, diminishing to 15 to 25 kt later 
tonight. waves 15 to 20 ft occasionally to 26 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.saturday...north winds 10 to 15 kt veering to southeast. waves
5 to 8 ft occasionally to 10 ft subsiding to 1 to 3 ft. 
.saturday night...east winds 10 to 20 kt increasing to 30 kt.
snow with a chance of rain in the evening, then rain likely, snow
and light freezing rain overnight. waves 1 to 3 ft building to
7 to 10 ft occasionally to 13 ft. 
.sunday...southeast gales to 35 kt increasing to gales to 40 kt.
rain likely with light freezing rain in the morning, then rain in
the afternoon. waves 12 to 16 ft occasionally to 21 ft. 
.sunday night...southwest gales to 45 kt veering to northwest
storm force winds to 50 kt. rain and snow. waves 18 to 23 ft
occasionally to 30 ft building to 20 to 25 ft occasionally to
33 ft. 
.monday...northwest storm force winds to 55 kt diminishing to
storm force winds to 50 kt. freezing spray. snow. waves 20 to
25 ft occasionally to 33 ft. 
.monday night...northwest storm force winds to 50 kt diminishing
to gales to 40 kt. heavy freezing spray. chance of snow. waves
18 to 23 ft occasionally to 30 ft. 
.tuesday...northwest gales to 35 kt becoming west 15 to 25 kt.
freezing spray. waves 12 to 16 ft occasionally to 21 ft subsiding
to 8 to 11 ft occasionally to 14 ft. 
.wednesday...south winds to 30 kt. chance of snow. waves 8 to
12 ft occasionally to 16 ft.  

$$