Great Lakes Forecast
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000
FZUS63 KLOT 130852
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
252 AM CST Wed Dec 13 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...Low pressure of 29.4 inches over Minnesota will move
to far southern Lake Michigan this afternoon and then to the mid
Atlantic coast Thursday morning. Low pressure will develop over
Lake Superior Thursday evening and deepen to 29.6 inches as it
moves to Lake Huron Friday afternoon. A 30.1 inch high will
strengthen to 30.2 inches as it crosses Ontario Friday night and
Saturday. The high will merge with another high over the southeast
U.S. to form a high averaging 30.4 inches that will span the
Atlantic Coast Saturday night. Another weak low is forecast to
move across the lake early next week.

LMZ261-362-364-366-563-565-567-868-131630-
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-
252 AM CST Wed Dec 13 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southeast winds 10 to 15 kt becoming east to 30 kt.
Snow. Waves 2 to 4 feet building to 6 to 9 feet occasionally to
12 feet.
.TONIGHT...Northeast winds to 30 kt becoming northwest 15 to 25
kt late. Chance of snow. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt. Chance of snow. Waves
2 to 4 ft.
.FRIDAY...West winds 15 to 25 kt becoming northwest to 30 kt.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY NIGHT...Northwest winds to 30 kt becoming north 15 to
25 kt. Chance of snow. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
.SATURDAY...Northeast winds 10 to 20 kt veering to southeast
15 to 25 kt. Chance of snow. Waves 3 to 5 ft.
.SUNDAY...South winds 15 to 25 kt becoming southwest. Chance of
snow and rain. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-131630-
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-
252 AM CST Wed Dec 13 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southwest winds 10 to 20 kt increasing to 30 kt and then
becoming north late. Snow. Waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft.
.TONIGHT...Northeast winds to 30 kt becoming north 15 to 25 kt
late. Occasional gale gusts to 35 kt are possible early this
evening. Snow likely. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...North winds 15 to 25 kt becoming northwest 10 to
20 kt. Chance of snow. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 2 to 4 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt increasing to 15 to
25 kt. Chance of flurries in the evening...then chance of snow
overnight. Waves 3 to 5 ft.
.FRIDAY...West winds to 30 kt. Chance of snow. Waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.FRIDAY NIGHT...Northwest winds to 30 kt subsiding to 10 to 20 kt
after midnight. Chance of snow. Waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Northwest winds 10 to 20 kt becoming south 15 to 25
kt. Waves 3 to 5 ft.
.SUNDAY...Southwest winds 15 to 25 kt. Chance of rain and snow.
Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-131630-
MAFOR 1310/
MICHIGAN NORTH 11317 11337 12247 11147 11140 12840. Chance of
snow early this morning and tonight. Waves 2 to 4 feet building
to 6 to 9 feet occasionally to 12 feet today. Waves 6 to 9 feet
occasionally to 12 feet tonight.

MICHIGAN SOUTH 10527 11437 12447 11647 11847 11147 19157 11147
11847. Chance of snow early this morning. Waves 4 to 6 feet
occasionally to 8 feet building to 6 to 9 feet occasionally to 12
feet today. Waves 6 to 9 feet occasionally to 12 feet tonight.

$$


JEE

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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