Great Lakes Forecast
Issued by NWS

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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KLOT 280756
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
256 AM CDT Wed Jun 28 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 29.4 inches over the eastern Dakotas
will move east across the Upper Mississippi Valley by this
evening...then will fill slightly to 29.6 inches as it moves to
the northern Lakes by Thursday morning. The low will trail a cold
front across the lake and into the Central Plains...where another
low of 29.6 inches will develop Thursday night...before moving
across central or northern Lake Michigan by late Friday. This low
will then slowly deepen as it moves into eastern Ontario Saturday
with the trailing cold front moving south of the lake. Weak high
pressure of 29.9 inches will spread across the lake Sunday.

LMZ261-362-364-366-563-565-567-868-281530-
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-
256 AM CDT Wed Jun 28 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 15 to 25 kt increasing to south winds to 30
kt. Occasional gale force gusts to 35 kt. Scattered showers and
thunderstorms developing by mid to late morning. Waves 3 to 5 ft
building to 7 to 10 ft occasionally to 13 ft.
.TONIGHT...South winds to 30 kt becoming southwest. Occasional
gale force gusts to 35 kt this evening. Showers and thunderstorms
especially in the evening. Waves 7 to 10 ft occasionally to 13 ft
subsiding to 5 to 8 ft occasionally to 10 ft.
.THURSDAY...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.THURSDAY NIGHT...West winds 10 to 15 kt becoming south. Chance
of thunderstorms overnight. Waves 1 to 3 ft.
.FRIDAY...Southeast winds 10 to 20 kt becoming south. Chance of
thunderstorms in the afternoon. Waves 1 to 3 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.
.SATURDAY...West winds 10 to 20 kt. Chance of thunderstorms.
Waves 1 to 3 ft.
.SUNDAY...West winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-281530-
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-
256 AM CDT Wed Jun 28 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 15 to 25 kt increasing to 30 kt. Occasional
gale force gusts to 35 kt. Scattered showers and thunderstorms
developing by mid to late morning. Waves 2 to 4 ft building to 6
to 9 ft occasionally to 12 ft.
.TONIGHT...South winds to 30 kt becoming southwest. Showers and
thunderstorms likely...especially in the evening. Waves 6 to 9
ft occasionally to 12 ft.
.THURSDAY...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Chance of thunderstorms. Waves 4 to 7 ft occasionally to
9 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming south.
Chance of thunderstorms. Waves 1 to 3 ft.
.FRIDAY...South winds 15 to 20 kt. Thunderstorms likely. Waves 1
to 3 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.
.SATURDAY...West winds 10 to 20 kt. Chance of thunderstorms.
Waves 1 to 3 ft.
.SUNDAY...West winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 1 to 3 ft.

$$

LMZ761-281530-
MAFOR 2809/
MICHIGAN NORTH 12430 13446 13449. Scattered showers and
thunderstorms today. Waves 3 to 5 feet building to 7 to 10 feet
occasionally to 13 feet today. Waves 7 to 10 feet occasionally to
13 feet subsiding to 5 to 8 feet occasionally to 10 feet tonight.

MICHIGAN SOUTH 12430 12446 12440 11449 11540. Scattered showers
and thunderstorms today. Chance of showers and thunderstorms
likely tonight. Waves 2 to 4 feet building to 6 to 9 feet
occasionally to 12 feet today. Waves 6 to 9 feet occasionally to
12 feet tonight.

$$

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.