132
FZUS63 KMKX 211442
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
942 AM CDT Tue May 21 2024

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...

Low pressure around 29.4 inches over eastern Nebraska will deepen
to 29.1 inches by early evening just northwest of Minneapolis,
then track to western Ontario by sunrise Wednesday. East to
southeast winds will increase today as a warm front begins to lift
north over the lake, becoming breezy south winds, possibly
approaching gale force, as the front moves from south to north
across the lake this evening. Areas of dense fog will continue
over the south half of the lake today.

A strong cold front will then veer the winds to southwesterly
late tonight with the breezy winds continuing over the north half
of the lake through Wednesday. Light to modest southwest winds
will then prevail over the entire lake for Wednesday night and
Thursday. Widespread thunderstorms are expected tonight and may
contain strong, damaging winds.


LMZ261-362-364-366-563-565-567-868-212130-
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-
942 AM CDT Tue May 21 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...East winds 5 to 10 kt increasing to 10 to 20 kt.
Patchy dense fog possible. Slight chance of showers and
thunderstorms this afternoon. Waves 1 to 2 ft.
.TONIGHT...East winds to 30 kt veering to south. Chance of
showers and thunderstorms. Waves 2 to 4 ft building to 7 to 10 ft
occasionally to 13 ft.
.WEDNESDAY...Southwest winds to 30 kt. Waves 7 to 10 ft
occasionally to 13 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.THURSDAY...Southwest winds 15 to 25 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt veering to
northeast 10 to 15 kt. Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...South winds 10 to 20 kt. Chance of showers. Waves
1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-212130-
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-
942 AM CDT Tue May 21 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Southeast winds 5 to 10 kt increasing to 10 to
20 kt. Areas of dense fog late this morning. Waves 1 to 2 ft
building to 1 to 3 ft.
.TONIGHT...Southeast winds to 30 kt becoming southwest. Chance of
thunderstorms and slight chance of showers in the evening, then
chance of showers and thunderstorms overnight. Waves 3 to 5 ft
building to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 kt becoming west
10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming south. Waves
1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...Southeast winds 10 to 20 kt becoming east. Chance of
thunderstorms. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.

$$

LMZ761-212130-
MAFOR 2116/
MICHIGAN NORTH 11200 11210 11230 11350 11346 11440 12540. A
chance of thunderstorms tonight. Waves 1 foot or less this
afternoon. Waves 2 to 4 feet building to 5 to 9 feet tonight.
Waves 5 to 9 feet Wednesday morning.

MICHIGAN SOUTH 11310 11320 11330 11450 11456 12540 11530. A
chance of thunderstorms tonight. Waves 1 foot or less building to
1 to 3 feet this afternoon. Waves 2 to 4 feet building to 6 to 9
feet tonight. Waves 6 to 9 feet subsiding to 4 to 7 feet
Wednesday morning.

$$


Gehring

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes