563
FZUS63 KMKX 052052
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
252 PM CST Wed Feb 5 2025

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 29.6 inches over southeast Manitoba tonight
will shift into east central Ontario Thursday, strengthening to
29.3 inches. The low will push further to the east Thursday night,
as high pressure around 30.4 inches moves into the northern
Plains.

The combination of these features will allow for strong west to
northwest winds (gales to 45 kt) to develop Thursday into
Thursday night across Lake Michigan. A Gale Warning is in effect
for most of this period, and a few gusts to storm force may occur,
particularly over central Lake Michigan. High waves are expected
across eastern portions of the lake during this period. Freezing
spray is also expected Thursday night into Friday.

High pressure around 30.3 inches will move into the region Friday
and to the east Friday night. This will result in westerly winds
gradually subsiding during this period.

LMZ261-362-364-366-563-565-567-868-060430-
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 PM CST Wed Feb 5 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...

.TONIGHT...Southeast winds 15 to 25 kt becoming south 10 to
20 kt. Chance of snow this evening, then chance of snow with
possible freezing rain and freezing drizzle likely overnight.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds 15 to 25 kt increasing to gales to
35 kt late in the morning, then becoming west gales to 45 kt in
the afternoon. Chance of snow in the morning, then slight chance
of snow in the afternoon. Waves 3 to 5 ft building to 10 to 14 ft
occasionally to 18 ft.
.THURSDAY NIGHT...West gales to 45 kt diminishing to 30 kt.
Freezing spray. Waves 12 to 16 ft occasionally to 21 ft subsiding
to 7 to 10 ft occasionally to 13 ft.
.FRIDAY...West winds to 30 kt diminishing to 15 to 25 kt.
Freezing spray in the morning. Waves 4 to 7 ft occasionally to
9 ft subsiding to 3 to 5 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt becoming northwest 10 to
15 kt. Waves 1 to 3 ft.
.SATURDAY...East winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of snow in the morning, then snow in the afternoon. Waves
1 to 3 ft building to 2 to 4 ft.
.SATURDAY NIGHT...Northeast winds 10 to 20 kt becoming north.
Snow likely. Waves 2 to 4 ft.
.SUNDAY...Northwest winds 10 to 20 kt becoming west. Waves 3 to
5 ft.
.MONDAY...West winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-060430-
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 PM CST Wed Feb 5 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...

.TONIGHT...Southeast winds 15 to 25 kt becoming south 10 to
20 kt. Chance of drizzle, light freezing drizzle and slight
chance of snow this evening, then chance of snow with possible
freezing rain, drizzle and freezing drizzle likely overnight.
Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...West winds 15 to 25 kt increasing to gales to 45 kt.
Waves 3 to 5 ft building to 8 to 12 ft occasionally to 16 ft.
.THURSDAY NIGHT...West gales to 45 kt becoming northwest gales to
35 kt after midnight, then diminishing to 30 kt late. Freezing
spray overnight. Waves 10 to 14 ft occasionally to 18 ft
subsiding to 8 to 12 ft occasionally to 16 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming west. Waves 6 to
9 ft occasionally to 12 ft subsiding to 3 to 5 ft.
.FRIDAY NIGHT...West winds 10 to 15 kt veering to northeast.
Waves 2 to 4 ft subsiding to 1 to 2 ft.
.SATURDAY...East winds 10 to 20 kt. Chance of snow in the
morning, then snow in the afternoon. Waves 2 to 4 ft building to
3 to 5 ft.
.SATURDAY NIGHT...Northeast winds 10 to 20 kt becoming northwest.
Snow likely. Waves 3 to 5 ft.
.SUNDAY...Northwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.MONDAY...West winds 10 to 15 kt becoming northwest. Waves 2 to
4 ft.

$$

LMZ761-060430-
MAFOR 0523/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11320 12330 12427 11540
11650 11660. Waves 1 to 3 feet building to 3 to 5 feet tonight.
Waves 3 to 5 feet building to 10 to 13 feet Thursday.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...12330 11337 11420 11520
11640 11650 11660. Waves 2 to 4 feet building to 3 to 6 feet
tonight. Waves 2 to 4 feet building to 7 to 11 feet Thursday.

$$


Sheppard

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

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