Great Lakes Forecast
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FZUS63 KLOT 181953
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
253 PM CDT Wed Apr 18 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...Low pressure of 29.4 inches over west central Indiana
will tracks into Ohio this evening. The low will reach New
England Thursday while a 30.5 inch high builds over the Great
Plains. The high will settle over the Western Great Lakes Friday
through Sunday.

LMZ261-362-364-366-563-565-567-868-190330-
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-
253 PM CDT Wed Apr 18 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...North winds to 30 kt. A few gale force gusts to 35 kt
possible overnight. Waves 6 to 9 ft occasionally to 12 ft
building to 8 to 11 ft occasionally to 14 ft.
.THURSDAY...North winds to 30 kt becoming northwest 10 to 20 kt.
Waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northwest 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.FRIDAY...West winds 5 to 10 kt becoming southwest. Waves 1 to
2 ft.
.FRIDAY NIGHT...Southwest winds 5 to 10 kt. Waves 1 ft or less.
.SATURDAY...South winds 5 to 10 kt becoming southwest. Waves
nearly calm.
.SATURDAY NIGHT...South winds 5 to 10 kt. Waves nearly calm.
.SUNDAY...South winds 5 to 10 kt. Waves nearly calm.
.MONDAY...South winds 10 to 15 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190330-
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-
253 PM CDT Wed Apr 18 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds to 30 kt. a few gale force gusts to 35 kt
possible overnight. Snow and slight chance of rain this evening,
then chance of snow overnight. Waves 6 to 9 ft occasionally to 12
ft building to 8 to 11 ft occasionally to 14 ft.
.THURSDAY...North winds to 30 kt becoming northwest. Waves 8 to
11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally
to 12 ft.
.THURSDAY NIGHT...Northwest winds 15 to 25 kt becoming north 5 to
10 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft.
.FRIDAY...Northwest winds 5 to 10 kt becoming west. Waves 1 to
2 ft.
.FRIDAY NIGHT...Southeast winds less than 10 kt. Waves 1 ft or
less.
.SATURDAY...Southeast winds 5 to 10 kt backing to northeast.
Waves nearly calm.
.SATURDAY NIGHT...Northeast winds 5 to 10 kt becoming east. Waves
1 ft or less.
.SUNDAY...Southeast winds 10 to 15 kt becoming east. Waves 1 to
2 ft.
.MONDAY...Southeast winds 10 to 15 kt becoming east 5 to 10 kt.
Waves 1 to 2 ft.

$$

LMZ761-190330-
MAFOR 1821/
MICHIGAN NORTH 11140 11840 13840 19850 12840 11830. Waves 6 to 9
ft occasionally to 12 ft building to 8 to 11 ft occasionally to 14
ft tonight. Waves 8 to 11 ft occasionally to 14 ft subsiding to 4
to 7 ft occasionally to 9 ft Thursday.

MICHIGAN SOUTH 11137 12847 11840 11840 19850 13840. Chance of
snow late this evening tonight. Waves 6 to 9 ft occasionally to 12
ft building to 8 to 11 ft occasionally to 14 ft tonight. Waves 8
to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally
to 12 ft Thursday.

$$


KJB

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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