Great Lakes Forecast
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FZUS63 KLOT 151451
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
851 AM CST Mon Jan 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...Low pressure of 30.1 inches straddling the Wisconsin
and Illinois state line will move across the southern part of the
lake this afternoon. The low will continue to Lake Huron later on
Tuesday, filling slightly to 30.2 inches. Another strong high
pressure of 30.9 inches will push south across the Plains,
weakening to 30.7 inches as it reaches the lower Missouri Valley
by Wednesday morning. The high will weaken further to 30.4 inches
over the southeast USA late week.

LMZ261-362-364-366-563-565-567-868-152215-
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-
851 AM CST Mon Jan 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southeast winds to 30 kt becoming east 15 to
25 kt. Snow through mid morning...then snow likely this
afternoon. Waves 6 to 9 ft occasionally to 12 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.TONIGHT...East winds to 30 kt becoming northeast. Snow showers
likely. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Northeast winds to 30 kt becoming north 15 to 25 kt.
Chance of snow showers. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt becoming west. Waves
3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...West winds to 30 kt becoming southwest gales to 35
kt in the afternoon. Freezing spray in the afternoon. Waves 4 to
7 ft occasionally to 9 ft building to 7 to 10 ft occasionally to
13 ft.
.WEDNESDAY NIGHT...Southwest gales to 35 kt becoming west.
Freezing spray. Waves 7 to 10 ft occasionally to 13 ft.
.THURSDAY...West 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 building to 5 to 8 ft
occasionally to 10 ft.

$$

LMZ669-671-673-675-870-872-874-876-152215-
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 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-
851 AM CST Mon Jan 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...

.REST OF TODAY...Southeast winds to 30 kt becoming east 10 to
20 kt late. Snow. Waves 6 to 9 ft occasionally to 12 ft subsiding
to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...Northeast winds 15 to 25 kt becoming north. Snow
showers. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...North winds to 30 kt. Snow showers. Waves 4 to 7 ft
occasionally to 9 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt. Snow showers
likely in the evening...then a chance of snow showers overnight.
Waves 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...West winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...West gales to 35 kt. Freezing spray. Waves 6
to 9 ft occasionally to 12 ft.
.THURSDAY...West winds to 30 kt becoming southwest. Waves 6 to
9 ft occasionally to 12 ft.
.FRIDAY...Southwest winds to 30 kt. Waves 4 to 7 ft occasionally
to 9 ft.

$$

LMZ080-777-779-878-152215-
Lake Michigan from Michigan City IN to St. Joseph MI 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 St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
851 AM CST Mon Jan 15 2018

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...

.REST OF TODAY...Southeast winds to 30 kt becoming southwest
15 to 25 kt. Snow through mid morning...then snow likely this
afternoon. Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft.
.TONIGHT...West winds to 30 kt diminishing to 15 to 25 kt. Snow
showers. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming north to 30 kt.
Snow showers. Waves building to 4 to 7 ft occasionally to 9 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10
to 20 kt. Snow showers likely in the evening...then a chance of
snow showers overnight. Waves 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...West winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...Southwest gales to 35 kt. Freezing spray.
Waves 5 to 8 ft occasionally to 10 ft.
.THURSDAY...Southwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.FRIDAY...Southwest winds to 30 kt. Waves 4 to 7 ft occasionally
to 9 ft.

$$
LMZ761-152215-
MAFOR 1516/
MICHIGAN NORTH 11347 12237 11247 14140. Chance of snow showers
after midnight tonight through Tuesday morning. Waves 6 to 9 feet
occasionally to 12 feet subsiding to 4 to 7 feet occasionally to
9 feet today. Waves 4 to 7 feet occasionally to 9 feet building to
5 to 8 feet occasionally to 10 feet tonight. Waves 5 to 8 feet
occasionally to 10 feet Tuesday morning.

MICHIGAN SOUTH 11347 11337 11247 11147 11847 12837 11847. Waves 6
to 9 feet occasionally to 12 feet subsiding to 4 to 7 feet
occasionally to 9 feet today. Waves 4 to 6 feet occasionally to 8
feet subsiding to 3 to 5 feet tonight. Waves 5 to 8 feet
occasionally to 10 feet Tuesday morning.

$$

Lenning

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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