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FZUS53 KMKX 181205
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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
705 AM CDT Mon Aug 18 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-181600-
Sheboygan to Port Washington WI-
705 AM CDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON...

.TODAY...Southeast wind 15 to 20 knots easing to 10 to 15 knots
late in the afternoon. Chance of showers in the morning, then
slight chance of showers late in the morning. Chance of showers
and thunderstorms in the afternoon. Waves 5 to 7 feet subsiding
to 4 to 6 feet in the afternoon.
.TONIGHT...South wind 10 to 15 knots. Showers and thunderstorms
likely through around midnight, then chance of showers and
thunderstorms after midnight. Waves 2 to 4 feet subsiding to 1 to
3 feet after midnight.
.TUESDAY...Southwest wind 10 to 15 knots becoming west 5 to
10 knots late in the morning, then veering northwest early in the
afternoon veering north late in the afternoon. Patchy fog in the
morning. slight chance of showers in the morning. Slight chance
of thunderstorms through the day. Chance of showers in the
afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots rising to 15 to
20 knots after midnight, then becoming north 15 to 20 knots early
in the morning. Mostly cloudy. Waves 1 to 2 feet building to 2 to
4 feet after midnight.

$$
LMZ644-181600-
Port Washington to North Point Light WI-
705 AM CDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON...

.TODAY...Southeast wind 15 to 20 knots easing to 10 to 15 knots
late in the afternoon. Chance of showers in the morning, then
slight chance of showers and thunderstorms late in the morning.
Chance of showers and thunderstorms in the afternoon. Waves 5 to
7 feet subsiding to 3 to 4 feet.
.TONIGHT...Southeast wind 10 to 15 knots veering south late in
the evening, then becoming south 10 to 15 knots after midnight
becoming southwest 5 to 10 knots early in the morning. Showers
and thunderstorms likely through around midnight, then chance of
showers and thunderstorms after midnight. Waves 2 to 4 feet
subsiding to 1 to 2 feet in the late evening and overnight.
.TUESDAY...West wind 5 to 10 knots veering north late in the
afternoon. Slight chance of showers in the morning. Slight chance
of thunderstorms through the day. Chance of showers in the
afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots becoming 10 to
20 knots after midnight, then becoming 15 to 20 knots early in
the morning. Mostly cloudy. Waves 1 to 2 feet building to 3 to
4 feet after midnight.

$$
LMZ645-181600-
North Point Light to Wind Point WI-
705 AM CDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON...

.TODAY...Southeast wind 15 to 20 knots easing to 10 to 15 knots
late in the afternoon. Slight chance of showers and thunderstorms
in the morning, then chance of showers and thunderstorms in the
afternoon. Waves 5 to 7 feet subsiding to 3 to 4 feet.
.TONIGHT...Southeast wind 10 to 15 knots veering southwest early
in the morning. Showers and thunderstorms likely through around
midnight, then chance of showers and thunderstorms after
midnight. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late
evening and overnight.
.TUESDAY...West wind 10 to 15 knots becoming northwest 5 to
10 knots early in the afternoon, then veering north late in the
afternoon. Slight chance of showers in the morning. Slight chance
of thunderstorms through the day. Chance of showers in the
afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots rising to 15 to
20 knots after midnight. Mostly cloudy. Waves 1 to 2 feet
building to 3 to 4 feet after midnight.

$$
LMZ646-181600-
Wind Point WI to Winthrop Harbor IL-
705 AM CDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON...

.TODAY...Southeast wind 15 to 20 knots easing to 10 to 15 knots
with gusts to around 20 knots early in the afternoon, then
becoming southeast 10 to 15 knots late in the afternoon. Slight
chance of showers and thunderstorms until late afternoon. Chance
of showers and thunderstorms late in the afternoon. Waves 4 to
6 feet subsiding to 3 to 4 feet in the afternoon.
.TONIGHT...Southeast wind 10 to 15 knots veering southwest early
in the morning. Showers and thunderstorms likely through around
midnight, then chance of showers and thunderstorms after
midnight. Waves 1 to 2 feet.
.TUESDAY...Southwest wind 10 to 15 knots veering west late in the
morning, then becoming northwest 5 to 10 knots early in the
afternoon veering north late in the afternoon. Slight chance of
showers in the morning. Slight chance of thunderstorms through
the day. Chance of showers in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots becoming 10 to
20 knots after midnight, then becoming 15 to 20 knots early in
the morning. Mostly cloudy. Waves 1 to 2 feet building to 3 to
4 feet after midnight.

$$
See Lake Michigan Open Waters Forecast for Wednesday through Friday.