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 30 31 32

000
FZUS63 KLOT 140852
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
252 AM CST Tue Nov 14 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....A large area of high pressure averaging 30.4 inches
centered from Quebec through the Ohio Valley will slowly move to the
Eastern Seaboard on Wednesday. A trough of low pressure averaging
29.9 inches is developing over the western Plains. The trough and an
associated cold front are expected to push across Lake Michigan on
Wednesday, and then to the eastern Great Lakes and Quebec Wednesday
night. High pressure averaging 30.3 inches is then expected to build
across the western Great Lakes Thursday the eastern Great Lakes
Friday while low pressure of 29.3 inches tracks across the Central
Plains.

LMZ261-362-364-366-563-565-567-868-141615-
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-
252 AM CST Tue Nov 14 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY
MORNING...

.TODAY...South winds 15 to 25 kt increasing to 30 kt. Chance of
rain showers this afternoon. Waves 3 to 5 feet building to 6 to 9
feet occasionally to 12 feet.
.TONIGHT...South gales to 35 kt. Rain showers. Waves 8 to 12 feet
occasionally to 16 feet building to 10 to 14 feet occasionally to
18 feet.
.WEDNESDAY...Southwest gales to 35 kt becoming to northwest to 30
kt. Rain showers in the morning...then chance of rain showers in
the afternoon. Waves 8 to 12 ft occasionally to 16 ft subsiding to
6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt. Chance of rain
showers. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...North winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Waves 6 to 9 ft occasionally to 12 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...Southeast winds 10 to 20 kt becoming south to
30 kt overnight. Waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
.FRIDAY...South gales to 40 kt. Rain showers. Waves 8 to 11 ft
occasionally to 14 ft building to 10 to 14 ft occasionally to
18 ft.
.SATURDAY...Northwest winds to 30 kt increasing to gales to 40 kt
in the afternoon. Chance of rain showers. Waves 5 to 8 ft
occasionally to 10 ft building to 8 to 11 ft occasionally to
14 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-141615-
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-
252 AM CST Tue Nov 14 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 15 to 25 kt increasing to 30 kt. Waves 2 to
4 ft building to 5 to 8 ft occasionally to 10 ft.
.TONIGHT...South winds to 30 kt. Chance of rain showers in the
evening...then rain showers and slight chance of thunderstorms
overnight. Waves 6 to 9 ft occasionally to 12 ft building to 8 to
11 ft occasionally to 14 ft.
.WEDNESDAY...Southwest winds to 30 kt veering to west. Rain
showers in the morning. Waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt. Chance of rain
showers. Waves 7 to 10 ft occasionally to 13 ft.
.THURSDAY...North winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Chance of rain showers in the morning. Waves 6 to
9 ft occasionally to 12 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.THURSDAY NIGHT...Southeast winds 10 to 20 kt becoming south to
30 kt overnight. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft.
.FRIDAY...South gales to 40 kt. Rain showers likely. Waves 8 to
11 ft occasionally to 14 ft building to 10 to 14 ft occasionally
to 18 ft.
.SATURDAY...Northwest gales to 35 kt increasing to gales to
40 kt. Chance of rain showers. Waves 6 to 9 ft occasionally to
12 ft building to 10 to 14 ft occasionally to 18 ft.

$$

LMZ761-141615-
MAFOR 1410/
MICHIGAN NORTH...Gale Warning in effect...11530 12430 11440 11450
13456. Chance of rain showers this afternoon. Waves 3 to 5 feet
building to 6 to 9 feet occasionally to 12 feet today. Waves 8 to
12 feet occasionally to 16 feet building to 10 to 14 feet
occasionally to 18 feet tonight.

MICHIGAN SOUTH 11520 12430 12440 12450 11456. Chance of showers
this evening. Waves 2 to 4 feet building to 5 to 8 feet
occasionally to 10 feet today. Waves 6 to 9 ft occasionally to 12
ft building to 8 to 11 feet occasionally to 14 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.