Great Lakes Forecast
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FZUS63 KMKX 230759
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
259 AM CDT Tue Apr 23 2019

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 of 29.8 inches over southern Lake Michigan will move
into southeast Ontario today, deepening to 29.5 inches. Gusty
northwest winds are expected this morning, before gradually
weakening this afternoon and evening. Winds will gradually weaken
Tuesday night into Wednesday morning, with weak high pressure of
30.0 inches moving across Wisconsin and into northern Ohio.

South to southwest winds will then increase later Wednesday into
Wednesday night. A cold front will then move east across the
region Thursday, with winds veering to the west northwest later
Thursday and lingering into Friday.

LMZ261-362-364-366-563-565-567-868-231515-
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-
259 AM CDT Tue Apr 23 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...North winds to 30 kt diminishing to 15 to 25 kt. Slight
chance of rain showers this morning. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 3 to 5 ft.
.TONIGHT...North winds 10 to 20 kt becoming northwest 10 to 15 kt
after midnight, then becoming west late. Waves 3 to 5 ft
subsiding to 1 to 3 ft.
.WEDNESDAY...Southwest winds 5 to 10 kt becoming south late in
the morning, then becoming 10 to 20 kt early in the afternoon
becoming south 10 to 20 kt late. Waves 1 to 2 ft building to 3 to
5 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt becoming southwest.
Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Chance of rain showers. Waves 3 to 5 ft subsiding to 1 to
3 ft.
.THURSDAY NIGHT...West winds 5 to 10 kt increasing to 10 to
20 kt. Waves 1 to 2 ft.
.FRIDAY...Northwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft.
.SATURDAY...North winds 10 to 20 kt becoming northeast 15 to
25 kt. Chance of rain showers. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-231515-
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-
259 AM CDT Tue Apr 23 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northwest winds to 30 kt becoming north 10 to 20 kt.
Slight chance of rain showers this morning. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TONIGHT...Northeast winds 5 to 10 kt backing to northwest. Waves
3 to 5 ft subsiding to 1 to 3 ft.
.WEDNESDAY...South winds less than 10 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 ft or less building to 1 to 3 ft.
.FRIDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 2 to 4 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming east 15 to
25 kt. Chance of rain showers. Waves 1 to 3 ft.

$$

LMZ761-231515-
MAFOR 2309/
MICHIGAN NORTH 11846 11840 11740 12830 12820 11710. Chance of
rain showers this morning. Waves 4 to 7 ft occasionally to 9 ft
building to 5 to 8 ft occasionally to 10 ft, then subsiding to 4
to 6 ft occasionally to 8 ft today. Waves 3 to 5 ft subsiding to
2 to 4 ft tonight.

MICHIGAN SOUTH 12740 11730 11820 11810 11100 11800 11700. Chance
of showers early this morning. Waves 4 to 6 ft occasionally to 8
ft building to 5 to 8 ft occasionally to 10 ft, then subsiding to
4 to 7 ft occasionally to 9 ft today. Waves 3 to 5 ft subsiding
to 2 to 4 ft tonight.

$$
Wood

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

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


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