731
FZUS63 KMKX 050309
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
909 PM CST Wed Dec 4 2024

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...

Low pressure around 29.3 inches continues eastward across
Ontario/Quebec. Northwestern gales will persist through tonight.
No major changes to the headlines at this time as gusts up to 45
knots are looking likely tonight. A few storm force gusts,
especially across the eastern side of the lake overnight into
Thursday morning are possible. Additionally with the colder
Arctic airmass moving over the the lake there will be a window for
some moderate freezing spray concerns overnight into Thursday
morning as well for the southern two-thirds of the lake. Stronger
northwesterly winds will continue into Thursday before weakening
below gale conditions through the afternoon as the low pushes
further east and high pressure around 30.5 inches begins to build
across the Upper Midwest. Lighter, but still gusty west-
northwesterly winds persist through the end of week before the
high pressure drift southeast into the Ohio river Valley for the
weekend. Then we can see southwestern winds increase through the
weekend.

LMZ261-362-364-366-563-565-567-868-051015-
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-
909 PM CST Wed Dec 4 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT THROUGH THURSDAY MORNING...

.REST OF TONIGHT...Northwest gales to 45 kt. Chance of snow
showers. Waves 12 to 16 ft occasionally to 21 ft.
.THURSDAY...Northwest gales to 45 kt diminishing to gales to
35 kt. Chance of snow showers. Waves 14 to 18 ft occasionally to
23 ft subsiding to 10 to 14 ft occasionally to 18 ft.
.THURSDAY NIGHT...Northwest winds to 30 kt becoming west 15 to
25 kt. Chance of snow showers in the evening. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 3 to 5 ft.
.FRIDAY...West winds 15 to 25 kt. Waves 4 to 6 ft occasionally to
8 ft.
.FRIDAY NIGHT...Northwest winds 10 to 20 kt becoming west. Waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.SATURDAY NIGHT...Southwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.SUNDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming west. Chance of
rain. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-051015-
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-
909 PM CST Wed Dec 4 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT THROUGH THURSDAY MORNING...

.REST OF TONIGHT...Northwest gales to 45 kt. Freezing spray.
Chance of snow showers. Waves 15 to 20 ft occasionally to 26 ft.
.THURSDAY...Northwest gales to 45 kt diminishing to 30 kt. Chance
of snow showers. Waves 15 to 20 ft occasionally to 26 ft
subsiding to 12 to 16 ft occasionally to 21 ft.
.THURSDAY NIGHT...Northwest winds to 30 kt becoming west 10 to
20 kt. Chance of snow showers in the evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.FRIDAY...West winds 15 to 25 kt. Waves 4 to 7 ft occasionally to
9 ft.
.FRIDAY NIGHT...West winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.SATURDAY NIGHT...Southwest winds to 30 kt. Waves 6 to 9 ft
occasionally to 12 ft.
.SUNDAY...Southwest winds to 30 kt. Waves 6 to 9 ft occasionally
to 12 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming west 15 to 25 kt.
Chance of rain. Waves 4 to 6 ft occasionally to 8 ft.

$$

&&STORM

LMZ761-051015-
MAFOR 0505/
MICHIGAN NORTH...GALE WARNING IN EFFECT...13760 11860 11850 11750
11740 11730. A chance of snow showers. Waves 12 to 16 feet
overnight. Waves 13 to 17 feet subsiding to 10 to 15 feet
Thursday. Waves 7 to 10 feet subsiding to 4 to 7 feet Thursday
evening.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...14760 12750 11740
11730. A chance of snow showers. Waves 15 to 20 feet overnight.
Waves 14 to 18 feet subsiding to 12 to 16 feet Thursday. Waves 9
to 12 feet subsiding to 6 to 9 feet Thursday evening.

$$


Patterson

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

Graphical marine forecasts are available online at:
weather.gov/greatlakes