000
FZUS63 KMKX 151809
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
109 PM CDT Mon Apr 15 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...

Light and variable winds will become east to northeast over all
of the open lake by late afternoon. Easterly winds will then
develop and increase late tonight into Tuesday morning over the
south half of the lake as low pressure of 29.2 inches approaches
from the Central Plains. Brisk easterly winds are expected by
Tuesday evening with a potential for gales over much of the lake
into Wednesday. A Gale Watch is now in effect for this period.

The low will slowly move across central Wisconsin on Wednesday
reaching northern or central Lake Michigan Wednesday evening with
a central pressure around 29.5 inches. The brisk southeast winds
over the southern half of the lake will shift southwesterly
Wednesday afternoon, while brisk and possible easterly gales will
continue across the far northern portion of the lake. The winds
will finally turn westerly but much weaker for late Wednesday
night over the far north. Light to modest westerly winds Thursday
morning will then turn southwest for the afternoon across the
entire lake.

LMZ080-669-671-673-675-777-779-870-872-874-876-878-152115-
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-
109 PM CDT Mon Apr 15 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
MORNING...

.REST OF TODAY...North winds 10 to 15 kt becoming northeast.
Waves 1 to 2 ft.
.TONIGHT...Northeast winds 10 to 15 kt becoming east 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt increasing to 30 kt. Chance of
rain showers in the afternoon. Waves 2 to 4 ft building to 4 to
7 ft occasionally to 9 ft.
.TUESDAY NIGHT...East gales to 40 kt becoming southeast gales to
40 kt. Showers with a chance of thunderstorms. Waves 10 to 14 ft
occasionally to 18 ft.
.WEDNESDAY...Southeast winds to 30 kt becoming south 15 to 25 kt.
Showers with a chance of thunderstorms in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt increasing to 15 to
25 kt. Chance of rain showers. Waves 4 to 6 ft occasionally to
8 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming west 15 to 25 kt.
Waves 1 to 3 ft.

$$

LMZ364-366-563-565-567-868-152115-
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-
109 PM CDT Mon Apr 15 2024

ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
MORNING...

.REST OF TODAY...Northwest winds 5 to 10 kt veering to northeast
10 to 15 kt. Waves 1 ft or less.
.TONIGHT...Northeast winds 10 to 15 kt. Waves 1 to 2 ft.
.TUESDAY...East winds 10 to 15 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.TUESDAY NIGHT...East gales to 40 kt becoming southeast. Rain
showers. Waves 7 to 10 ft occasionally to 13 ft building to 8 to
12 ft occasionally to 16 ft.
.WEDNESDAY...Southeast gales to 35 kt diminishing to 30 kt. Rain
showers in the morning, then rain showers with a chance of
thunderstorms in the afternoon. Waves 7 to 10 ft occasionally to
13 ft subsiding to 5 to 8 ft occasionally to 10 ft.
.WEDNESDAY NIGHT...Southeast gales to 35 kt veering to northwest
15 to 25 kt. Chance of rain showers. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 3 to 5 ft.
.THURSDAY...Northwest winds 10 to 20 kt becoming southwest. Waves
3 to 5 ft.
.FRIDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 1 to 3 ft.

$$

LMZ261-362-152115-
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-
109 PM CDT Mon Apr 15 2024

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH...

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
EVENING...

.REST OF TODAY...West winds 10 to 20 kt becoming northwest. Waves
1 to 2 ft.
.TONIGHT...North winds 10 to 15 kt diminishing to 5 to 10 kt late
in the evening, then becoming north 5 to 10 kt after midnight
becoming northeast late. Waves 1 to 2 ft subsiding to nearly
calm.
.TUESDAY...Northeast winds 5 to 10 kt becoming east 15 to 25 kt.
Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY NIGHT...East gales to 35 kt increasing to gales to 45 kt
overnight. Chance of rain showers in the evening, then rain
showers overnight. Waves 4 to 7 ft occasionally to 9 ft building
to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...East gales to 45 kt. Rain showers. Waves 8 to 11 ft
occasionally to 14 ft.
.WEDNESDAY NIGHT...Southeast gales to 35 kt veering to northwest
15 to 25 kt. Chance of rain showers. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 3 to 5 ft.
.THURSDAY...Northwest winds 10 to 20 kt becoming southwest. Waves
3 to 5 ft.
.FRIDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 1 to 3 ft.

$$
LMZ761-152115-
MAFOR 1519 AMD/
MICHIGAN NORTH 11820 14110 11110 11220. Waves 2 feet or less this
afternoon and tonight. Waves 1 to 3 feet Tuesday morning.

MICHIGAN SOUTH 14110 12220 11230. Waves 1 foot or less this
afternoon. Waves 1 to 3 feet tonight. Waves 1 to 3 feet building
to 2 to 4 feet Tuesday morning.

$$


Gehring

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

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