Great Lakes Forecast
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491
FZUS63 KLOT 160807
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
207 AM CST Sat Dec 16 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...A weak front stalled over southern portions of the
lake early this morning will move slowly south today and clear the
southern portions of the lake by evening. High pressure of 30.1
inches over Ontario will slowly move east to Maine by Sunday
night. Meanwhile, low pressure of 29.0 inches will move to
northern Saskatchewan Sunday afternoon and then track east to
Hudson Bay by Tuesday morning with a cold front trailing south
from this low moving across Lake Michigan Tuesday morning. A
narrow ridge of high pressure averaging 30.3 inches will build
into the western Great Lakes region in the wake of this front
Tuesday night into Wednesday.

LMZ261-362-364-366-563-565-161615-
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-
207 AM CST Sat Dec 16 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.TODAY...Southwest winds 15 to 25 kt backing to east 10 to 20 kt.
Chance of snow this morning. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft.
.TONIGHT...East winds 10 to 20 kt becoming southeast. Waves 2 to
4 ft.
.SUNDAY...Southeast winds 10 to 20 kt veering to south. Waves
2 to 4 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Waves
2 to 4 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest to 30 kt in
the afternoon. Waves 1 to 3 ft building to 4 to 6 ft occasionally
to 8 ft.
.MONDAY NIGHT...Southwest winds to 30 kt becoming west. Waves
6 to 9 ft occasionally to 12 ft.
.TUESDAY...West gales to 35 kt. Waves 7 to 10 ft occasionally to
13 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming north 10 to
15 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.

$$

LMZ567-669-671-673-868-870-872-874-161615-
Lake Michigan from Two Rivers to Sheboygan WI 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 Pentwater to Manistee MI 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-
207 AM CST Sat Dec 16 2017

TWO RIVERS WI TO MANISTEE MI SOUTH TO WIND POINT WI TO HOLLAND
MI...

.TODAY...Northeast winds around 10 kt increasing to 10 to 20 kt
this morning and becoming east this afternoon. Chance of snow
this morning. Waves 2 to 4 ft.
.TONIGHT...East winds 10 to 20 kt. Waves 2 to 4 ft.
.SUNDAY...East winds 10 to 20 kt becoming south. Waves 2 to 4 ft.
.SUNDAY NIGHT...West winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest to 30 kt in
the afternoon. Waves 1 to 3 ft building to 4 to 6 ft occasionally
to 8 ft.
.MONDAY NIGHT...Southwest winds to 30 kt becoming west gales to
35 kt. Waves 6 to 9 ft occasionally to 12 ft.
.TUESDAY...West gales to 35 kt increasing to gales to 40 kt.
Waves 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming north 10 to
15 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.

$$

LMZ080-675-777-779-876-878-161615-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
207 AM CST Sat Dec 16 2017

WIND POINT WI TO HOLLAND MI SOUTH...

.TODAY...Southwest winds to 30 kt diminishing to 10 to 20 this
morning then shifting to east 10 to 15 kt this afternoon. Waves 5
to 8 ft occasionally to 10 ft subsiding to 2 to 4 ft.
.TONIGHT...East winds 10 to 20 kt becoming southeast. Waves 2 to
4 ft.
.SUNDAY...Southeast winds 10 to 20 kt veering to southwest. Waves
2 to 4 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Waves
2 to 4 ft.
.MONDAY...Southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft.
.MONDAY NIGHT...Southwest winds to 30 kt becoming west. Waves
6 to 9 ft occasionally to 12 ft.
.TUESDAY...West winds to 30 kt. Waves 6 to 9 ft occasionally to
12 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming north 10 to
15 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.

$$

LMZ761-161615-
MAFOR 1610/
MICHIGAN NORTH 10720 11820 11120 14220 11220 11320. Waves 2 to 4
ft.

MICHIGAN CENTRAL 12110 12120 14220. Waves 2 to 4 ft.

MICHIGAN SOUTH 11540 11530 12520 11210 12220 11320. Waves 5 to 8
ft occasionally to 10 ft subsiding to 2 to 4 ft today and
continuing 2 to 4 ft tonight.

$$

- Izzi

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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