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 29 30
000
FZUS63 KLOT 162043
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
243 PM CST Sat Dec 16 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 30.3 inches over Ontario will slowly
move east to Maine by Sunday night. Meanwhile, low pressure of
29.0 inches will move to northern Saskatchewan Sunday afternoon
and then track east to Hudson Bay by Tuesday morning with a cold
front trailing south from this low moving across Lake Michigan
Tuesday morning. A narrow ridge of high pressure averaging 30.3
inches will build into the western Great Lakes region in the wake
of this front Tuesday night into Wednesday.

LMZ261-362-364-366-563-565-567-868-170415-
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-
243 PM CST Sat Dec 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...East winds 10 to 20 kt. Waves 2 to 4 ft.
.SUNDAY...Southeast winds 10 to 20 kt diminishing to 10 to 15 kt.
Slight chance of snow in the afternoon. Waves 2 to 4 ft subsiding
to 1 to 3 ft.
.SUNDAY NIGHT...South winds 10 to 15 kt veering to west 10 to
20 kt. Waves 1 to 3 ft.
.MONDAY...Southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 2 to 4 ft building to 4 to 7 ft occasionally to
9 ft.
.MONDAY NIGHT...Southwest gales to 35 kt becoming west. Chance of
rain and snow in the evening. Waves 6 to 9 ft occasionally to
12 ft.
.TUESDAY...West winds to 30 kt increasing to gales to 35 kt.
Chance of snow in the afternoon. Waves 6 to 9 ft occasionally to
12 ft.
.TUESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Chance of snow. Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming north. Waves
3 to 5 ft subsiding to 1 to 3 ft.
.THURSDAY...East winds 10 to 20 kt. Snow likely. Waves 1 to 3 ft.


$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170415-
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-
243 PM CST Sat Dec 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...East winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY...Southeast winds 10 to 20 kt becoming south. Slight
chance of rain in the afternoon. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Waves
2 to 4 ft.
.MONDAY...Southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft.
.MONDAY NIGHT...Southwest winds to 30 kt becoming west. Waves
6 to 9 ft occasionally to 12 ft.
.TUESDAY...West winds to 30 kt increasing to gales to 35 kt.
Waves 6 to 9 ft occasionally to 12 ft.
.TUESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 20 kt. Chance of rain and snow.
Waves 2 to 4 ft.

$$

LMZ761-170415-
MAFOR 1622/
MICHIGAN NORTH 14220 13320 11310. Waves 2 to 4 feet.

MICHIGAN SOUTH 14220 11220 12320 11420. Waves 3 to 5 feet
tonight, subsiding to 2 to 4 feet Sunday.

$$

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.