Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
000
FZUS63 KLOT 241400
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
900 AM CDT Tue Apr 24 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...Low pressure of 29.9 inches is over the southeastern
United States this morning with weak troughing stretching into
the Midwest. A cold front will move south across Lake Michigan
tonight. 30.5 inch high pressure over the northern Great Plains
will build into the Upper Midwest tonight into Wednesday. The
ridge will move across Lake Michigan Wednesday night. A 29.4 inch
low will move across Hudson Bay Wednesday night and a trailing
cold front will push across Lake Michigan Thursday night. High
pressure of 30.2 inches will build across the Great Plains Friday
and shift across the Ohio Valley and Great Lakes over the
weekend.

LMZ261-362-364-366-563-565-567-868-242115-
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-
900 AM CDT Tue Apr 24 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northeast winds less than 10 kt becoming north
10 to 20 kt this afternoon. Isolated rain showers this afternoon.
Waves 1 to 2 ft building to 2 to 4 ft late.
.TONIGHT...North winds 15 to 25 kt increasing to 30 kt. Isolated
rain showers in the evening. Waves 3 to 5 ft building to 5 to 8
ft occasionally to 10 ft.
.WEDNESDAY...North winds 20 to 25 kt diminishing to 10 to 20 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY NIGHT...North winds 10 to 15 kt backing to southwest.
Waves 2 to 4 ft subsiding to 1 to 2 ft.
.THURSDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft building
to 2 to 4 ft.
.THURSDAY NIGHT...West winds 15 to 25 kt becoming north. Chance
of rain showers, light freezing rain and snow showers. Waves 3 to
5 ft.
.FRIDAY...North winds 15 to 25 kt becoming northwest 10 to 20 kt.
Waves 3 to 5 ft.
.SATURDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-242115-
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-
900 AM CDT Tue Apr 24 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Isolated rain showers. Waves 1 to 2 ft.
.TONIGHT...North winds 15 to 25 kt increasing to 30 kt. Isolated
rain showers in the evening. Waves 3 to 5 ft building to 7 to 10
ft occasionally to 13 ft.
.WEDNESDAY...North winds to 30 kt diminishing to 15 to 25 kt.
Waves subsiding to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...North winds 10 to 20 kt becoming west 5 to
10 kt overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding
to 2 to 4 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt veering to northwest
15 to 25 kt. Chance of rain showers. Waves 1 to 3 ft building to
3 to 5 ft.
.FRIDAY...North winds to 30 kt diminishing to 10 to 20 kt in the
afternoon. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...Northwest winds 10 to 20 kt becoming north. Waves
2 to 4 ft.

$$
LMZ761-242115-
MAFOR 2415/
MICHIGAN NORTH 11100 12820 14840 11830. Waves 1 ft or less
building to 2 to 4 ft this afternoon. Waves 3 to 5 ft building to
5 to 8 ft occasionally to 10 ft tonight. Waves 5 to 8 ft
occasionally to 10 ft Wednesday morning.

MICHIGAN SOUTH 10300 11110 11810 11820 11830 14840. Waves 1 to 2
ft today. Waves 3 to 5 ft building to 7 to 10 ft occasionally to
13 ft tonight. Waves 7 to 10 ft occasionally to 13 ft Wednesday
morning.


$$


KMD

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

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



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.