Great Lakes Forecast
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379
FZUS63 KLOT 270148
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
848 PM CDT Mon Jun 26 2017

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 30.3 inches extending from the
northern and central Plains to the lower Ohio Valley will remain
in this position while weak low pressure of 29.9 inches is over
Lake Huron. The surface ridge axis will shift over the lake
Tuesday and then continue east as the center of the high moves
across the Ohio Valley. Low pressure of 29.4 inches will develop
across the northern plains Tuesday evening and then track over the
northern end of the lake Wednesday night into Thursday morning.
The low will weaken north of the Great Lakes late in the week.
Another weaker low around 29.7 inches may move over the southern
end of the lake Friday.

LMZ261-362-364-366-563-565-567-868-270800-
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-
848 PM CDT Mon Jun 26 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northwest winds 10 to 20 kt becoming west.
Slight chance of waterspouts this evening. Slight chance of
showers this evening. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.TUESDAY...West winds 10 to 20 kt backing to south. Waves 1 to
3 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10
to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY...South winds to 30 kt increasing to gales to 35 kt.
Showers and thunderstorms likely in the afternoon. Waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft.
.WEDNESDAY NIGHT...South winds to 30 kt becoming southwest.
Showers and thunderstorms in the evening...then showers and
thunderstorms likely overnight. Waves 6 to 9 ft occasionally to
12 ft.
.THURSDAY...West winds 15 to 25 kt diminishing to 10 to 20 kt.
Chance of showers and thunderstorms in the morning. Waves 4 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 20 kt becoming north 10
to 15 kt. Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 15 kt becoming east 10 to 20 kt.
Chance of showers and thunderstorms. Waves 1 to 2 ft.
.SATURDAY...West winds 10 to 15 kt becoming southwest. Waves 1
to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-270800-
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-
848 PM CDT Mon Jun 26 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Northwest winds 15 to 25 kt becoming west
10 to 20 kt. Slight chance of waterspouts this evening. Slight
chance of showers this evening. Waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft.
.TUESDAY...West winds 10 to 20 kt backing to south. Waves 2 to
4 ft subsiding to 1 to 2 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY...South winds to 30 kt increasing to gales to 35 kt.
Chance of showers and thunderstorms in the afternoon. Waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft.
.WEDNESDAY NIGHT...South gales to 35 kt becoming southwest.
Showers and thunderstorms in the evening...then showers and
thunderstorms likely overnight. Waves 6 to 9 ft occasionally to
12 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming west 10 to 20
kt. Chance of showers and thunderstorms in the morning. Waves 4
to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt veering to
northeast. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.FRIDAY...East winds 10 to 15 kt becoming south 10 to 20 kt.
Showers and thunderstorms likely. Waves 1 to 3 ft.
.SATURDAY...West winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ761-270800-
MAFOR 2703/
MICHIGAN NORTH 11720 13620 11520 12420 11530. Waves 3 to 5 ft
subsiding to 1 to 3 ft overnight. Waves 1 to 3 ft Tuesday.

MICHIGAN SOUTH 11730 11720 13620 11510 12420. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft overnight. Waves 2
to 4 ft subsiding to 1 to 2 ft Tuesday.

$$

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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