Great Lakes Forecast
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FZUS63 KMKX 182002
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
302 PM 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...

Northwesterly winds will continue to slowly diminish through this
afternoon, shifting to become westerly this evening and increasing
overnight as high pressure of 30.3 inches builds southward into
the Lower Mississippi Valley and low pressure of 29.4 inches moves
southeastward across southern Ontario. A few gusts may approach
gale force across the southern half of the lake Tuesday morning.
Winds will shift to northwesterly Tuesday afternoon as an
associated cold front sinks southeast across the lake. Building
high pressure in the northern Great Plains may result in a few
gales Wednesday as the low exits.

Winds will remain northwesterly through Wednesday, slowly
diminishing into Thursday.

LMZ261-362-364-366-563-565-567-868-190330-
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-
302 PM CDT Mon Mar 18 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Slight chance of light freezing rain and snow showers this
evening, then chance of snow showers and slight chance of light
freezing rain 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, then slight chance
of snow showers in the afternoon. 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 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.
.WEDNESDAY...Northwest gales to 35 kt. Chance of snow showers in
the morning. Waves 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY NIGHT...Northwest 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.
.THURSDAY...Northwest winds 10 to 20 kt. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.THURSDAY NIGHT...Southeast winds 10 to 15 kt. Snow likely. Waves
1 to 2 ft.
.FRIDAY...Southeast winds 10 to 20 kt becoming east. Chance of
snow. Waves 1 to 3 ft.
.SATURDAY...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190330-
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-
302 PM CDT Mon Mar 18 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...West winds 10 to 20 kt becoming southwest to 30 kt.
Slight chance of light freezing rain overnight. Waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Southwest winds to 30 kt becoming northwest 15 to
25 kt. Waves 6 to 9 ft occasionally to 12 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 15 to 25 kt increasing to 30 kt.
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 6 to 9 ft occasionally to 12 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.THURSDAY...North winds 10 to 15 kt becoming northeast. Waves
3 to 5 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...East winds 10 to 20 kt. Snow likely. Waves 1 to
3 ft.
.FRIDAY...Southeast winds 10 to 20 kt becoming east. Chance of
snow and rain. Waves 2 to 4 ft.
.SATURDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 3 to 5 ft.

$$

LMZ761-190330-
MAFOR 1822/
MICHIGAN NORTH 12620 11630 12530 12630 11730. A chance of snow
showers overnight and Tuesday morning. Waves 2 to 4 feet
subsiding to 1 to 3 feet, then building to 3 to 5 feet tonight.
Waves 5 to 8 feet subsiding to 3 to 5 feet Tuesday.

MICHIGAN SOUTH 12620 11630 11530 11540 11550 11640 11630. Waves 3
to 6 feet subsiding to 2 to 4 feet, then building to 4 to 7 feet
tonight. Waves 6 to 10 feet subsiding to 4 to 7 feet Tuesday.

$$


MH

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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