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 31 32
000
FZUS63 KLOT 060233
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
833 PM CST Tue Dec 5 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...Deep low pressure of 28.7 inches just over central
Ontario will move across James Bay on Wednesday, and into
northern Quebec by Thursday. Another low of 29.7 inches will
form over Lake Superior Friday and shift to Lake Huron Friday
night into Saturday.

LMZ261-362-364-366-563-565-567-868-061030-
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-
833 PM CST Tue Dec 5 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT THROUGH WEDNESDAY MORNING...

.REST OF TONIGHT...West gales to 45 kt easing to gales to 40 kt.
Chance of snow showers. Waves 10 to 14 ft occasionally to 18 ft
subsiding to 8 to 12 ft occasionally to 16 ft.
.WEDNESDAY...West gales to 35 kt diminishing to 30 kt. Chance of
snow. Waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9
ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow
showers. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.THURSDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow showers. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt increasing to 15 to
25 kt. Chance of snow showers overnight. Waves 2 to 4 ft.
.FRIDAY...West winds 15 to 25 kt. Chance of snow showers in the
morning...then snow showers likely in the afternoon. Waves 3 to
5 ft.
.FRIDAY NIGHT...Northwest winds to 30 kt. Chance of snow showers.
Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow showers. Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY...West winds 15 to 25 kt becoming southwest to 30 kt.
Chance of snow showers. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-061030-
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-
833 PM CST Tue Dec 5 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT THROUGH WEDNESDAY MORNING...

.REST OF TONIGHT...West gales to 45 kt diminishing to gales to
40 kt. Chance of snow showers through early evening. Waves 12 to
16 ft occasionally to 21 ft.
.WEDNESDAY...West gales to 35 kt diminishing to 30 kt. Slight
chance of snow in the morning...then chance of snow in the
afternoon. Waves 8 to 12 ft occasionally to 15 ft subsiding to 6
to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow
showers. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.THURSDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow showers. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...West winds 15 to 25 kt. Waves 3 to 5 ft.
.FRIDAY...West winds to 30 kt. Chance of snow showers. Waves 3 to
5 ft building to 4 to 6 ft occasionally to 8 ft.
.FRIDAY NIGHT...West winds to 30 kt becoming northwest. Chance of
snow showers. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow showers. Waves 5 to 8 ft occasionally to 10 ft.
.SUNDAY...West winds 15 to 25 kt becoming southwest to 30 kt.
Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.

$$
LMZ761-061030-
MAFOR 0604/
MICHIGAN NORTH...Gale Warning in effect...12660 12650 13640
11740. Chance of snow showers. Waves 10 to 14 ft occasionally to
18 ft subsiding to 8 to 12 ft occasionally to 16 ft by
morning...and to 6 to 9 feet occasionally to 12 feet Wednesday
afternoon. Waves 5 to 8 feet occasionally to 10 feet Wednesday
evening.

MICHIGAN SOUTH...Gale Warning in effect...11660 13650 13640
11740. Chance of snow showers. Waves 12 to 16 feet occasionally
to 21 feet subsiding to 8 to 12 feet occasionally to 15 feet
overnight and to 7 to 10 feet occasionally to 13 feet by Wednesday
afternoon. Waves 6 to 9 feet occasionally to 12 feet Wednesday
evening.

$$

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.