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Hurricane Symbol Storm Special! View the latest observations near Atlantic Post-Tropical Cyclone Nestor and East Pacific Tropical Depression Octave.

National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 191959
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
259 PM CDT Sat Oct 19 2019

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

Southerly winds taper off this evening as a low pressure system of
29.5 inches shifts into central Canada. This system will drag a
weak cold front across the lake tonight with both winds and waves
diminishing behind the front.

Southeast winds will pick up Sunday night into Monday ahead of a
stronger approaching low pressure system. The low of 29.4 inches
will move from South Dakota Sunday night to somewhere between
northwest Wisconsin and western Lake Superior Monday night, while
deepening to 29.1 inches. The winds will remain elevated and
become south to southwest later Monday into Monday night, and then
westerly by later Tuesday. Winds may gust to gale force at times
Monday through Tuesday night. Winds will be a little lighter
Wednesday, but will remain gusty and out of the west.

&&

LMZ261-362-364-366-563-565-567-868-200400-
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-
259 PM CDT Sat Oct 19 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

TONIGHT
South winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming southwest 10 to 15 kt after
midnight becoming west late. Chance of showers. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.

SUNDAY
West winds 5 to 10 kt becoming southwest. Waves 1 to
3 ft subsiding to 1 to 2 ft.

SUNDAY NIGHT
Southeast winds 5 to 10 kt becoming east late in
the evening, then increasing to 10 to 20 kt after midnight
becoming southeast late. Waves 1 ft or less building to 2 to
4 ft.

MONDAY
Southeast winds to 30 kt. Showers likely in the
morning, then showers in the afternoon. Waves 4 to 7 ft
occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft.

MONDAY NIGHT
South gales to 35 kt becoming southwest to 30 kt.
Showers in the evening, then chance of showers overnight. Waves
6 to 9 ft occasionally to 12 ft.

TUESDAY
Southwest gales to 35 kt. Chance of showers in the
morning, then showers likely in the afternoon. Waves 7 to 10 ft
occasionally to 13 ft.

TUESDAY NIGHT
West gales to 35 kt. Chance of rain showers.
Waves 7 to 10 ft occasionally to 13 ft.

WEDNESDAY
West winds to 30 kt. Chance of rain showers. Waves
5 to 8 ft occasionally to 10 ft.

THURSDAY
West winds 10 to 20 kt. Chance of rain showers. Waves
2 to 4 ft. 



LMZ080-669-671-673-675-777-779-870-872-874-876-878-200400-
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-
259 PM CDT Sat Oct 19 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TONIGHT
South winds 10 to 20 kt diminishing to 10 to 15 kt
late this evening, then becoming west after midnight becoming
northwest 5 to 10 kt late. Slight chance of showers. Waves 3 to
5 ft subsiding to 1 to 2 ft.

SUNDAY
Northwest winds 5 to 10 kt becoming northeast. Waves
1 to 2 ft.

SUNDAY NIGHT
East winds 5 to 10 kt increasing to 10 to 15 kt
late in the evening, then increasing to 10 to 20 kt after
midnight becoming southeast late. Chance of showers overnight.
Waves 1 to 3 ft building to 2 to 4 ft.

MONDAY
Southeast winds to 30 kt becoming south gales to 35 kt.
Showers. Waves 7 to 10 ft occasionally to 13 ft.

MONDAY NIGHT
Southwest winds to 30 kt increasing to gales to
35 kt. Chance of showers in the evening. Waves 6 to 9 ft
occasionally to 12 ft building to 7 to 10 ft occasionally to
13 ft.

TUESDAY
Southwest gales to 35 kt becoming west gales to 40 kt.
Chance of showers. Waves 8 to 12 ft occasionally to 16 ft.

TUESDAY NIGHT
West gales to 40 kt diminishing to gales to
35 kt. Waves 8 to 12 ft occasionally to 16 ft subsiding to 8 to
11 ft occasionally to 14 ft.

WEDNESDAY
West winds to 30 kt becoming southwest. Waves 6 to
9 ft occasionally to 12 ft.

THURSDAY
West winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft. 



LMZ761-200400-
MAFOR 1921/
MICHIGAN NORTH 12430 11520 11510 13600 11500. Chance of showers
tonight. Waves 3 to 6 feet subsiding to 1 to 3 feet tonight.
Waves 2 feet or less Sunday.

MICHIGAN SOUTH 11420 11410 11510 11610 13700 11800. Waves 3 to 5
feet subsiding to 1 to 3 feet tonight. Waves 2 feet or less
Sunday.



Stumpf

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes