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 29

000
FZUS63 KLOT 131438
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
838 AM CST Tue Feb 13 2018

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...Strong high pressure of 30.8 inches over the eastern
Great Lakes will move across New England today. Low pressure of
29.6 inches will move across the upper Great Lakes Wednesday
night into Thursday morning...with a trailing cold front moving
across the lake Thursday. Low pressure will develop along this
front Thursday and quickly move to New England by Friday morning.
Another strong high pressure will build across the Plains Thursday
night and Friday.

LMZ261-362-364-366-563-565-567-868-132230-
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-
838 AM CST Tue Feb 13 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...South winds 15 to 25 kt increasing to 30 kt from
late morning on. Waves 1 to 2 ft building to 4 to 7 ft
occasionally to 9 ft.
.TONIGHT...South winds to 30 kt becoming southwest. Occasional
gale gusts to 35 kt possible. Freezing spray. Waves 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt. Freezing spray in the
morning. Waves 5 to 8 ft occasionally to 10 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt. Waves 5 to 8 ft
occasionally to 10 ft.
.THURSDAY...West winds 10 to 20 kt becoming northwest. Waves 3
to 5 ft subsiding to 1 to 3 ft.
.THURSDAY NIGHT...North winds 15 to 25 kt becoming northwest to
30 kt. Chance of snow. Waves building to 4 to 7 ft occasionally
to 9 ft.
.FRIDAY...Northwest winds to 30 kt becoming west 10 to 20 kt in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to
3 to 5 ft.
.SATURDAY...Southwest winds to 30 kt. Freezing spray. Chance of
snow. Waves 5 to 8 ft occasionally to 10 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-132230-
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-
838 AM CST Tue Feb 13 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...South winds 15 to 25 kt. Waves 1 to 3 ft
building to 4 to 7 ft occasionally to 9 ft.
.TONIGHT...South winds to 30 kt becoming southwest. Waves 4 to
7 ft occasionally to 9 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming south. Waves 4
to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt. Areas of fog
overnight. Waves 4 to 7 ft occasionally to 9 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming northwest 10
to 15 kt late. Areas of fog in the morning. Chance of rain in
the afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.THURSDAY NIGHT...North winds 15 to 25 kt increasing to 30 kt.
Waves building to 5 to 8 ft occasionally to 10 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt
in the afternoon. Freezing spray. Chance of snow. Waves 5 to 8
ft occasionally to 10 ft.
.SATURDAY...Southwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.

$$
LMZ761-132230-
MAFOR 1316/
MICHIGAN NORTH 11430 12440 14540 11540. Waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft today. Waves 6 to 9 ft
occasionally to 11 ft tonight and Wednesday morning.

MICHIGAN SOUTH 14430 12540 12530. Waves 1 to 3 ft  building to 4
to 7 ft occasionally to 9 ft today. Waves 4 to 7 ft occasionally
to 9 ft tonight. Waves 4 to 6 ft occasionally to 8 ft Wednesday
morning.

$$


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.