Great Lakes Forecast
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000
FZUS63 KMKX 180803
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
303 AM CDT Mon Mar 18 2024

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...

Brisk northwest winds continue this morning as a 29.3 inch low
pressure moves across Quebec, and high pressure of 30.4 inches
builds south through the Great Plains. Northwest winds will shift
out of the west Monday evening, becoming breezy & southwesterly
late Monday night and Tuesday morning as low pressure around 29.5
inches moves from Alberta toward Lake Superior. A few gale force
gusts are possible over the southern half of the lake Tuesday
morning. Winds will turn back out of the northwest behind a cold
front Tuesday afternoon through Wednesday. Gales are possible over
the far northern portion of the lake on Wednesday.

LMZ261-362-364-366-563-565-567-868-181530-
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-
303 AM CDT Mon Mar 18 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...North winds to 30 kt becoming northwest 10 to 20 kt.
Slight chance of light freezing rain and snow showers. Waves 4 to
7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TONIGHT...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Slight chance of snow showers in the evening, then chance of snow
showers overnight. Waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...Southwest winds to 30 kt becoming northwest 15 to
25 kt. Chance of snow showers in the morning. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt increasing to 30 kt.
Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...Northwest gales to 40 kt. Freezing spray. Chance of
snow. Waves 8 to 11 ft occasionally to 14 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt diminishing to 15 to
25 kt. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.THURSDAY...Northwest winds 10 to 20 kt becoming west. Waves 1 to
3 ft.
.FRIDAY...East winds 10 to 15 kt backing to north. Waves 1 to
3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-181530-
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-
303 AM CDT Mon Mar 18 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northwest winds 15 to 25 kt. Slight chance of snow
showers. Waves 6 to 9 ft occasionally to 12 ft.
.TONIGHT...West winds 10 to 20 kt increasing to 30 kt after
midnight, then becoming southwest late. Waves 4 to 6 ft
occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft.
.TUESDAY...Southwest winds to 30 kt becoming west late in the
morning, then becoming west to 30 kt early in the afternoon
becoming northwest 15 to 25 kt late. Waves 7 to 10 ft
occasionally to 13 ft building to 8 to 11 ft occasionally to
14 ft, then subsiding to 5 to 8 ft occasionally to 10 ft.
.TUESDAY NIGHT...Northwest winds 10 to 20 kt increasing to 30 kt
overnight. Waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft.
.WEDNESDAY...Northwest winds to 30 kt. Waves 8 to 12 ft
occasionally to 16 ft.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 kt becoming north
10 to 20 kt. Waves 7 to 10 ft occasionally to 13 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.THURSDAY...North winds 10 to 15 kt becoming east. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.FRIDAY...East winds 10 to 20 kt becoming northeast. Chance of
snow and rain. Waves 1 to 3 ft.

$$

LMZ761-181530-
MAFOR 1810/
MICHIGAN NORTH 11830 11840 11730 11720 12620 11630 11530. A
chance of snow showers early this morning and overnight. Waves 4
to 7 feet subsiding to 3 to 6 feet today. Waves 1 to 3 feet
building to 3 to 5 feet tonight.

MICHIGAN SOUTH 14730 12620 12630. A chance of snow showers early
this morning. Waves 5 to 8 feet today. Waves 3 to 6 feet building
to 4 to 7 feet tonight.

$$


Sheppard

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

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


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