513
FZUS63 KMKX 201939
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
239 PM CDT Mon May 20 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...

Southeast winds will turn southwesterly for a time late this
afternoon over the southern third of the lake, as a compact area
of low pressure averaging 29.8 inches moves through the area.
Winds then turn westerly tonight.

Winds will turn more south to southeasterly again Tuesday. Breezy
southerly winds are expected as a deepening low pressure around
29.4 inches approaches the Upper Great Lakes Region and tracks
northeast into Wednesday. There looks to be periods of
thunderstorms over the lake, especially southern portions Monday
through Wednesday morning.

LMZ261-362-364-366-563-565-567-868-210315-
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-
239 PM CDT Mon May 20 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt
late this evening, then becoming north after midnight diminishing
to 5 to 10 kt late. Chance of rain showers and slight chance of
thunderstorms this evening. Waves 1 to 2 ft.
.TUESDAY...Northeast winds 5 to 10 kt becoming east. Chance of
rain showers in the afternoon. Waves 1 to 2 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt becoming southeast to
30 kt late in the evening, then becoming south after midnight
becoming south to 30 kt late. Chance of showers and
thunderstorms. Waves 2 to 4 ft building to 6 to 9 ft occasionally
to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt. Waves 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.THURSDAY...Southwest winds 15 to 25 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt veering to north 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 15 kt becoming east 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...Southeast winds 10 to 20 kt. Chance of showers. Waves
2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-210315-
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-
239 PM CDT Mon May 20 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southwest winds 15 to 25 kt becoming west 10 to 20 kt
late this evening, then diminishing to 10 to 15 kt after midnight
backing to southeast late. Chance of rain showers and
thunderstorms this evening, then slight chance of rain showers
and thunderstorms overnight. Waves 1 to 3 ft.
.TUESDAY...Southeast winds 5 to 10 kt increasing to 10 to 20 kt.
Slight chance of showers and thunderstorms. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt becoming south to
30 kt, then becoming southwest late. Chance of showers and
thunderstorms. Waves 2 to 4 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 7 ft
occasionally to 9 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 2 to
4 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt becoming southeast 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...East winds 10 to 15 kt becoming northeast 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...Southeast winds 10 to 20 kt. Chance of showers. Waves
2 to 4 ft.

$$

LMZ761-210315-
MAFOR 2022/
MICHIGAN NORTH 11126 11110 11810 11700 11800 11200 11300 11210. A
chance of thunderstorms early this evening. Waves 2 feet or less.

MICHIGAN SOUTH 11536 11630 11610 11600 11200 11300 12310. A
chance of thunderstorms this evening. Waves 1 to 3 feet tonight.
Waves 2 feet or less Tuesday.

$$


Boxell

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

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