National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS63 KMKX 240145
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
845 PM CDT Tue Oct 23 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...

High pressure of 30.5 inches will drift from Minnesota to the
central Great Lakes by Wednesday afternoon. Winds will be
northerly tonight into Wednesday morning, becoming somewhat
variable by afternoon. That high will drift east on Thursday,
while weakening to 30.2 inches. Winds will become southerly as the
high moves east of Lake Michigan.

A trough of low pressure around 29.8 inches will develop across
the northern and central Great Plains on Friday into Saturday.
Expect southerly winds to become easterly with time, as high
pressure of 30.3 inches moves through southern Ontario Friday
night and Saturday.

LMZ261-362-364-366-563-565-567-868-240915-
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-
845 PM CDT Tue Oct 23 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...North winds 10 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY...North winds 10 to 15 kt becoming west. Waves 1 to
3 ft subsiding to 1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 kt increasing to 10 to
20 kt, then diminishing to 10 to 15 kt late. Waves 1 to 3 ft.
.THURSDAY...Southwest winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...Southwest winds 10 to 15 kt diminishing to 5 to
10 kt. Chance of rain showers. Waves 1 to 3 ft.
.FRIDAY...Southeast winds 5 to 10 kt increasing to 10 to 15 kt.
Chance of rain showers. Waves 1 to 2 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt becoming southeast. Chance
of rain showers. Waves 1 to 3 ft.
.SATURDAY...East winds 10 to 20 kt. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north 10 to 15 kt.
Chance of rain showers. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240915-
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-
845 PM CDT Tue Oct 23 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 10 to 20 kt becoming northeast.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...Northeast winds 10 to 20 kt diminishing to 5 to
10 kt. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...East winds 5 to 10 kt veering to south. Waves
1 to 2 ft.
.THURSDAY...South winds 5 to 10 kt. Waves 1 to 2 ft.
.THURSDAY NIGHT...Southeast winds 5 to 10 kt. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 5 to 10 kt becoming east 10 to 15 kt.
Waves 1 to 2 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt. Chance of rain showers.
Waves 2 to 4 ft.
.SATURDAY...East winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 2 to 4 ft.
.SUNDAY...North winds 10 to 15 kt. Chance of rain showers. Waves
1 to 2 ft.

$$

LMZ761-240915-
MAFOR 2403/
MICHIGAN NORTH 12820 13810 11710 11600 11510. Waves 3 to 5 ft
subsiding to 2 to 4 ft overnight. Waves 2 to 4 ft Wednesday.
Waves 1 ft or less Wednesday evening.

MICHIGAN SOUTH 11820 11120 14110 11100 11200. Waves 3 to 5 ft
subsiding to 2 to 4 ft overnight. Waves 2 to 4 ft Wednesday and
Wednesday evening.

$$


Boxell

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

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