Great Lakes Forecast
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000
FZUS63 KLOT 171458
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
858 AM CST Wed Jan 17 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...Strong high pressure of 30.8 inches centered over
northeast Texas early this morning will moves across the lower
Mississippi Valley tonight and stay over the Deep South into the
weekend. Meanwhile, low pressure of 29.6 inches over Hudson Bay
will move across northern Quebec tonight. Another low of 29.3
inches will move from Alberta Thursday to James Bay Friday night.
Yet another low of 29.7 inches will move from the central and
southern Great Plains Saturday night to Lake Michigan late Sunday
night into Monday deepening to 29.3 inches.

LMZ261-362-364-366-563-565-567-868-172215-
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-
858 AM CST Wed Jan 17 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...West winds to 30 kt quickly becoming southwest
gales to 40 kt. Freezing spray. Waves 7 to 10 ft occasionally to
13 ft building to 10 to 14 ft occasionally to 18 ft.
.TONIGHT...Southwest gales to 35 kt becoming west to 30 kt late.
Waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.THURSDAY...West winds to 30 kt becoming southwest. Waves 4 to
7 ft occasionally to 9 ft.
.THURSDAY NIGHT...West winds 15 to 25 kt becoming southwest 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.FRIDAY...Southwest winds to 30 kt increasing to gales to 35 kt.
Waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft.
.FRIDAY NIGHT...Southwest gales to 40 kt diminishing to 30 kt
overnight. Waves 8 to 11 ft occasionally to 14 ft.
.SATURDAY...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.SUNDAY...Southeast winds 10 to 15 kt becoming east 10 to 20 kt.
Chance of rain and snow. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-172215-
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-
858 AM CST Wed Jan 17 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM 3 PM CST THIS AFTERNOON THROUGH
LATE TONIGHT...

.REST OF TODAY...West winds 15 to 25 kt becoming southwest to
30 kt and then increasing to gales to 35 kt late. Freezing spray.
Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft.
.TONIGHT...Southwest gales to 35 kt becoming west to 30 kt late.
Freezing spray. Waves 8 to 11 ft occasionally to 14 ft.
.THURSDAY...West winds to 30 kt becoming southwest. Waves 6 to
9 ft occasionally to 12 ft.
.THURSDAY NIGHT...Southwest winds to 30 kt diminishing to 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.FRIDAY...Southwest winds to 30 kt. Waves 4 to 6 ft occasionally
to 8 ft building to 5 to 8 ft occasionally to 10 ft.
.FRIDAY NIGHT...Southwest gales to 35 kt diminishing to 30 kt.
Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.SUNDAY...South winds 10 to 20 kt. Chance of rain. Waves 2 to
4 ft.

$$
LMZ761-172215-
MAFOR 1716/
MICHIGAN NORTH...Gale Warning in effect...10640 12550 11551 11550
11650 11640 12630. Freezing spray today. Waves 7 to 10 ft
occasionally to 13 ft building to 10 to 14 ft occasionally to 18
ft today. Waves 10 to 14 ft occasionally to 18 ft subsiding to 6
to 9 ft occasionally to 12 ft tonight and to 4 to 7 ft
occasionally to 9 ft Thursday morning.

MICHIGAN SOUTH...Gale Warning in effect...11630 11540 14550 11640
11540. Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft today. Waves 8 to 11 ft occasionally to 14
ft tonight. Waves 6 to 9 ft occasionally to 12 ft Thursday
morning.

$$

RC

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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