976
FZUS63 KMKX 280143
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
843 PM CDT Sat Apr 27 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 29.7 inches northeast of Lake Superior will
continue to gradually weaken as it moves into Quebec later
tonight. Its cold front will gradually shift the winds from
west southwest to northerly late tonight, but southerly winds
will continue over far southern Lake Michigan as the front stalls.
Brisk northeast winds will then prevail over central Lake
Michigan on Sunday with lighter winds in the north, and variable
winds in the south where the stalled front remains.

Modest east to southeast winds will then develop over all of the
lake Sunday night as the stalled front moves north as a warm
front. Brisk east winds, possibly reaching gale force, are
expected over the northern tip of the lake late Sunday night into
Monday morning. Breezy south winds will develop over the remainder
of the lake on Monday.

Rounds of showers and thunderstorms are expected tonight into
Monday morning. Some of these storms could be strong to severe. A
Severe Thunderstorm Watch has been issued for the southwestern
open waters until midnight.

LMZ261-362-364-366-563-565-567-868-280915-
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-
843 PM CDT Sat Apr 27 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT SUNDAY...

.REST OF TONIGHT...Southwest winds 10 to 20 kt late this evening,
then becoming northwest 10 to 20 kt after midnight becoming north
late. Patchy dense fog. Scattered rain showers with isolated
thunderstorms through early evening, then isolated rain showers
and thunderstorms overnight. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 2 to 4 ft.
.SUNDAY...North winds 15 to 25 kt becoming northeast. Patchy fog.
Isolated rain showers in the morning, then rain showers and
slight chance of thunderstorms in the afternoon. Waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt becoming east 15 to
25 kt late in the evening, then increasing to 30 kt after
midnight increasing to gales to 35 kt late. Patchy fog. Rain
showers. Waves 4 to 6 ft occasionally to 8 ft building to 4 to
7 ft occasionally to 9 ft.
.MONDAY...Southeast gales to 40 kt diminishing to 30 kt in the
afternoon. Rain showers in the morning, then chance of rain
showers in the afternoon. Waves 7 to 10 ft occasionally to 13 ft
subsiding to 4 to 7 ft occasionally to 9 ft.
.MONDAY NIGHT...South winds 15 to 25 kt becoming southwest 10 to
15 kt overnight. Chance of rain showers. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.
.TUESDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt increasing to 15 to
25 kt. Chance of rain showers. Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds 15 to 25 kt. Waves 2 to 4 ft.
.THURSDAY...East winds 10 to 20 kt becoming northeast. Chance of
rain showers. Waves 1 to 3 ft.

$$

LMZ669-671-673-675-280915-
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-
843 PM CDT Sat Apr 27 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...

...SEVERE THUNDERSTORM WATCH 151 IN EFFECT UNTIL MIDNIGHT CDT
TONIGHT...

.REST OF TONIGHT...South winds 15 to 25 kt backing to east 10 to
20 kt. Scattered rain showers and thunderstorms. Patchy fog
overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.SUNDAY...East northeast winds 15 to 25 kt becoming northeast.
Patchy fog. Numerous rain showers and scattered thunderstorms in
the morning, then rain showers and slight chance of thunderstorms
in the afternoon. Waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt veering to southeast.
Patchy fog. Chance of rain showers in the evening, then rain
showers with a chance of thunderstorms overnight. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.MONDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Showers in the morning, then chance of showers in the afternoon.
Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft.
.TUESDAY...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt. Chance of showers.
Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft.
.THURSDAY...East winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.

$$

LMZ080-777-779-870-872-874-876-878-280915-
Lake Michigan from Michigan City IN to St. Joseph MI 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-
843 PM CDT Sat Apr 27 2024

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...

.REST OF TONIGHT...South winds 20 to 25 kt diminishing to 10 to
20 kt. Scattered rain showers and thunderstorms. Patchy fog
overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.SUNDAY...South winds 15 to 25 kt becoming southeast 10 to 20 kt.
Patchy dense fog in the morning, then patchy fog in the
afternoon. Numerous rain showers and scattered thunderstorms in
the morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Waves 2 to 4 ft building to 4 to
6 ft occasionally to 8 ft.
.SUNDAY NIGHT...East winds 10 to 20 kt becoming southeast. Patchy
fog. Chance of showers and thunderstorms in the evening, then
showers with a chance of thunderstorms overnight. Waves 3 to 5 ft
subsiding to 2 to 4 ft.
.MONDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers. Waves 4 to 6 ft occasionally to 8 ft building
to 4 to 7 ft occasionally to 9 ft.
.MONDAY NIGHT...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Chance of showers in the evening. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.
.TUESDAY...West winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt becoming south.
Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.

$$

LMZ761-280915-
MAFOR 2804/
MICHIGAN NORTH 11620 19624 11820 11830 11830 19836 13136 11226.
Waves 3 to 5 feet subsiding to 1 to 3 feet overnight. Waves 2 to
4 feet building to 3 to 6 feet Sunday. Waves 3 to 5 feet
subsiding to 2 to 4 feet Sunday evening.

MICHIGAN SOUTH...SEVERE THUNDERSTORM WATCH IN EFFECT...11530
19539 11420 19424 12336 19334 11236 11136 11120 11210. Waves 2 to
4 feet subsiding to 1 to 3 feet overnight. Waves 1 to 3 feet
building to 3 to 6 feet Sunday. Waves 3 to 5 feet subsiding to 2
to 4 feet Sunday evening.

$$


Gehring

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

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