Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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 100147
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
847 PM CDT Wed Aug 9 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...High pressure of 30.2 inches over the Mid Atlantic
will move off the east coast overnight. Weak low pressure of
29.9 inches over western Minnesota will move across northern
Wisconsin Thursday and across northern Lake Michigan Thursday
night. A 30.1 inch high will then build over the Upper Midwest
Saturday, before spreading across the Great Lakes region early
next week.

LMZ261-362-364-366-563-565-567-868-100800-
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-
847 PM CDT Wed Aug 9 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 10 to 20 kt. Slight chance of
showers overnight. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers and slight chance of thunderstorms in the
morning...then showers likely with a chance of thunderstorms in
the afternoon. Waves building to 3 to 5 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt veering to west 10 to
15 kt. Showers and thunderstorms likely in the evening... then
chance of showers overnight. Waves 3 to 5 ft subsiding to 2 to
4 ft.
.FRIDAY...Northwest winds 10 to 15 kt increasing to 15 to 25 kt.
Chance of showers in the morning. Waves 2 to 4 ft.
.FRIDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to 20
kt. Waves 3 to 5 ft.
.SATURDAY...North winds 10 to 20 kt becoming northwest. Waves
3 to 5 ft.
.SATURDAY NIGHT...North winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY...North winds 10 to 15 kt becoming northwest. Waves 1 ft
or less.
.MONDAY...North winds 5 to 10 kt becoming northwest. Waves 1 ft
or less.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-100800-
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-
847 PM CDT Wed Aug 9 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 15 kt becoming south 10
to 20 kt. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt. Slight chance of showers and
thunderstorms in the morning...then chance of showers and
thunderstorms in the afternoon. Waves building to 3 to 5 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt becoming west. Showers
and thunderstorms likely in the evening...then chance of showers
overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.FRIDAY...Northwest winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt. Waves 3 to 5 ft.
.SATURDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.SATURDAY NIGHT...North winds 10 to 20 kt diminishing to 5 to 10
kt overnight. Waves 2 to 4 ft.
.SUNDAY...Northeast winds 10 to 15 kt becoming north. Waves 1 to
3 ft.
.MONDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 1 to 3 ft.

$$

LMZ761-100800-
MAFOR 1003/
MICHIGAN NORTH 14420 11420 11436 11439 11429. Chance of
thunderstorms Thursday. Waves 1 to 3 ft tonight building to 3
to 5 ft Thursday.

MICHIGAN SOUTH 12310 15420. Chance of showers and thunderstorms
Thursday afternoon. Waves 1 to 3 ft tonight building to 3 to 5
ft Thursday.

$$

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.