Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | 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 29
000
FZUS63 KLOT 290754
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
254 AM CDT Thu Jun 29 2017

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 29.5 inches over western Lake Superior
will fill to 29.7 inches as it moves to east-central Ontario by
this evening. The low will drag a cold front across the lake and
extend west across the lower Great Lakes into the Central
Plains...while remaining nearly stationary. Another low of 29.5
inches will develop tonight along the western end of the front.
This low will slowly track east through the lower Missouri Valley
to the Ohio Valley by Saturday. Low pressure of 29.8 inches is
also expected to develop over south-central Canada tonight. This
low should slowly deepen as it moves into eastern Ontario Saturday
with the trailing cold front pushing across the lake Saturday
night or Sunday morning. High pressure of 30.1 inches is expected
to build across the central plains Sunday night and Monday.

LMZ261-362-364-366-563-565-567-868-291530-
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-
254 AM CDT Thu Jun 29 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southwest winds 10 to 20 kt. Isolated showers and
thunderstorms. Waves 4 to 7 ft occasionally to 9 ft subsiding to
3 to 5 ft.
.TONIGHT...West winds 10 to 20 kt diminishing to 10 to 15 kt.
Isolated showers and thunderstorms overnight. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.FRIDAY...West winds 10 to 15 kt becoming southwest. Chance of
showers in the morning. Waves 1 to 2 ft.
.FRIDAY NIGHT...Southwest winds 5 to 10 kt becoming northwest.
Chance of showers overnight. Waves 1 ft or less.
.SATURDAY...West winds 5 to 10 kt becoming southwest 10 to 15 kt.
Chance of showers in the morning. Waves 1 to 2 ft.
.SATURDAY NIGHT...West winds 10 to 15 kt. Waves 1 to 2 ft.
.SUNDAY...West winds 10 to 15 kt becoming southwest. Chance of
showers. Waves 1 to 2 ft.
.MONDAY...Northeast winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-291530-
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-
254 AM CDT Thu Jun 29 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southwest winds to 30 kt diminishing to 10 to 20 kt.
Isolated showers and thunderstorms this afternoon. Waves 4 to
7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.TONIGHT...Southwest winds 10 to 20 kt. Scattered showers and
thunderstorms. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.FRIDAY...Southwest winds 10 to 20 kt veering to northwest 10 to
15 kt. Chance of showers in the morning...then chance of showers
and thunderstorms in the afternoon. Waves 1 to 2 ft.
.FRIDAY NIGHT...West winds 10 to 15 kt. Chance of showers in the
evening. Waves 1 to 2 ft.
.SATURDAY...West winds 10 to 15 kt. Waves 1 ft or less.
.SATURDAY NIGHT...West winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 2 ft.
.SUNDAY...West winds 10 to 15 kt becoming southwest 10 to 20 kt.
Chance of showers. Waves 1 to 2 ft.
.MONDAY...North winds 10 to 15 kt. Chance of showers. Waves 1 to
2 ft.

$$

LMZ761-291530-
MAFOR 2909/
MICHIGAN NORTH 11530 14520 13610. Scattered showers and
thunderstorms early this morning. Waves 6 to 9 feet occasionally
to 12 feet this early morning subsiding to 3 to 5 feet today.
Waves 2 to 4 feet subsiding to 1 to 3 feet tonight.

MICHIGAN SOUTH 12540 11530 14520 11510. Scattered showers and
thunderstorms early this morning and tonight. Waves 6 to 9 feet
occasionally to 12 feet early this morning subsiding to 3 to 5
feet today. Waves 2 to 4 feet subsiding to 1 to 2 feet tonight.

$$

MDB

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.