Great Lakes Forecast
Issued by NWS

Current Version | Previous Version | Text Only | 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 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KMKX 220825
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
325 AM CDT Tue Oct 22 2019

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 strong low of 29.2 inches across northwest Wisconsin early this
morning will cross Lake Superior today and move into south central
Ontario by this evening. South gales will veer southwest this
morning, then west later this afternoon into the evening.  A Gale
Warning remains in effect for the entire open waters of Lake
Michigan into early tonight.

Winds will be a little lighter Wednesday, but will remain gusty out
of the west. Lighter winds are then expected for Thursday into
Friday as high pressure moves through the region.

&&

LMZ261-362-364-366-563-565-567-868-221515-
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-
325 AM CDT Tue Oct 22 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...South gales to 45 kt becoming southwest gales to 40 kt.
Showers likely this morning, then chance of showers this
afternoon. Waves 14 to 18 ft occasionally to 23 ft.
.TONIGHT...Southwest gales to 35 kt becoming west. Chance of rain
showers. Waves 10 to 14 ft occasionally to 18 ft subsiding to
7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West winds to 30 kt. Chance of rain in the morning.
Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...West winds 15 to 25 kt becoming northwest
10 to 20 kt. Chance of rain. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 2 to 4 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...West winds 10 to 15 kt. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-221515-
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-
325 AM CDT Tue Oct 22 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Southwest gales to 40 kt. Chance of showers this
morning, then slight chance of showers this afternoon. Waves
12 to 16 ft occasionally to 21 ft.
.TONIGHT...West gales to 40 kt diminishing to 30 kt. Slight
chance of rain showers in the evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 7 to 10 ft occasionally to
13 ft.
.WEDNESDAY...West winds to 30 kt becoming southwest 10 to 20 kt.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt becoming northwest.
Chance of rain. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.THURSDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY NIGHT...Northwest winds 5 to 10 kt. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.FRIDAY...Northwest winds 10 to 15 kt becoming west. Waves 1 to
3 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south. Waves
2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-221515-
MAFOR 2209/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11450 11466 11566 11556
12550 12650. Chance of showers early this morning and the rest of
tonight. Waves 14 to 18 ft occasionally to 23 ft today. Waves 10
to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft
occasionally to 13 ft tonight.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...14550 11550 13650.
Chance of showers this morning. Waves 12 to 16 ft occasionally to
21 ft today. Waves 10 to 14 ft occasionally to 18 ft subsiding to
7 to 10 ft occasionally to 13 ft tonight.

$$

DDV

Experimental modernized open lake forecast is available online at
weather.gov/mkx/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.