Great Lakes Forecast
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432
FZUS63 KLOT 151727
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
1227 PM CDT Tue May 15 2018

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...High pressure of 30.2 inches will set up over Ontario
and the western Great Lakes region today. This high will shift
into Quebec tonight. A slightly stronger high will then shift over
the region Wednesday night through Thursday night.

LMZ261-362-364-366-563-565-567-868-152130-
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-
1227 PM CDT Tue May 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 25 to 25 kt diminishing to 10 to 20
kt. Waves 3 to 5 ft.
.TONIGHT...Northeast winds 10 to 20 kt easing to 10 to 15 kt and
veering to south overnight. Waves 3 to 5 ft subsiding to 1 to 3
ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt veering to
northeast. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.THURSDAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...East winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft.
.FRIDAY...East winds 10 to 20 kt. Waves 1 to 3 ft.
.SATURDAY...South winds 10 to 20 kt becoming southwest. Waves
1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-152130-
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-
1227 PM CDT Tue May 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...North winds 15 to 25 kt. Occasional gusts to 30
kt. Patchy fog. Waves 3 to 6 ft occasionally to 8 ft.
.TONIGHT...North winds 10 to 20 kt becoming northeast late in the
evening, then becoming east 10 to 15 kt after midnight
diminishing to 5 to 10 kt late. Waves 3 to 5 ft subsiding to 2 to
4 ft.
.WEDNESDAY...East winds 5 to 10 kt veering to south. Waves 1 to
3 ft.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 kt backing to
northeast. Waves 1 to 2 ft.
.THURSDAY...Northeast winds 5 to 10 kt becoming north 10 to
15 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...Northeast winds 10 to 15 kt becoming east 10 to
20 kt. Waves 1 to 3 ft.
.FRIDAY...East winds 10 to 15 kt. Waves 1 to 3 ft.
.SATURDAY...Southeast winds 10 to 15 kt becoming south. Waves
1 to 2 ft.

$$
LMZ761-152130-
MAFOR 1518 AMD/
MICHIGAN NORTH 11830 11820 11120 11210 11310 11410 11520. Waves 3
to 5 ft this afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft
tonight. Waves 2 to 4 ft Wednesday morning.

MICHIGAN SOUTH 12830 19140 11820 11110 11210 12200. Waves 3 to 6
ft occasionally to 8 ft this afternoon. Waves 3 to 5 ft subsiding
to 2 to 4 ft tonight. Waves 1 to 3 ft Wednesday morning.

$$


Rodriguez

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

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



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