039
FZUS53 KMKX 172005
NSHMKX

Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
305 PM CDT Sun Aug 17 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-180900-
Sheboygan to Port Washington WI-
305 PM CDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.THROUGH EARLY EVENING...North wind 10 to 20 knots. Partly sunny.
Waves 4 to 6 feet.
.TONIGHT...Northeast wind 15 to 20 knots becoming 10 to 20 knots
late in the evening, then veering southeast after midnight
becoming 15 to 20 knots early in the morning. Gusts up to
25 knots. Partly cloudy through around midnight then becoming
mostly cloudy. Waves 4 to 6 feet building to 5 to 7 feet early in
the morning.
.MONDAY...Southeast wind 15 to 20 knots veering south in the
afternoon. Chance of showers and thunderstorms. Waves 5 to 7 feet
subsiding to 4 to 6 feet in the afternoon.
.MONDAY NIGHT...South wind 10 to 15 knots. Thunderstorms through
around midnight. Showers likely through the night. Thunderstorms
likely after midnight. Waves 2 to 4 feet.
.TUESDAY...Southwest wind 10 to 15 knots veering north late in
the afternoon. Chance of thunderstorms in the morning. Chance of
showers through the day. Waves 2 to 4 feet subsiding to 1 to
2 feet in the afternoon.

$$
LMZ644-180900-
Port Washington to North Point Light WI-
305 PM CDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.THROUGH EARLY EVENING...Northeast wind 15 to 20 knots. Mostly
cloudy. Waves 4 to 6 feet.
.TONIGHT...Northeast wind 15 to 20 knots easing to 10 to 15 knots
late in the evening, then veering east 10 to 20 knots after
midnight veering southeast 15 to 20 knots early in the morning.
Partly cloudy through around midnight then becoming mostly
cloudy. Waves 4 to 6 feet building to 5 to 7 feet early in the
morning.
.MONDAY...Southeast wind 15 to 20 knots veering south early in
the afternoon, then becoming southeast 10 to 15 knots late in the
afternoon. Chance of showers and thunderstorms through the day.
Waves 5 to 7 feet subsiding to 3 to 4 feet.
.MONDAY NIGHT...Southeast wind 10 to 15 knots veering south early
in the morning. Showers and thunderstorms likely. Waves 2 to
4 feet subsiding to 1 to 3 feet after midnight.
.TUESDAY...Southwest wind 10 to 15 knots veering north late in
the afternoon. Chance of thunderstorms in the morning. Chance of
showers through the day. Waves 1 to 2 feet.

$$
LMZ645-180900-
North Point Light to Wind Point WI-
305 PM CDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.THROUGH EARLY EVENING...North wind 15 to 20 knots. Partly sunny.
Waves 4 to 6 feet.
.TONIGHT...North wind 10 to 20 knots veering northeast 10 to
15 knots late in the evening, then veering east 10 to 20 knots
after midnight veering southeast 15 to 20 knots early in the
morning. Partly cloudy through around midnight then becoming
mostly cloudy. Waves 4 to 6 feet building to 5 to 7 feet early in
the morning.
.MONDAY...Southeast wind 15 to 20 knots becoming south 10 to
15 knots early in the afternoon, then backing southeast late in
the afternoon. Chance of showers and thunderstorms through the
day. Waves 5 to 7 feet subsiding to 3 to 4 feet.
.MONDAY NIGHT...Southeast wind 10 to 15 knots veering south early
in the morning. Showers and thunderstorms likely. Waves 2 to
4 feet subsiding to 1 to 2 feet in the late evening and
overnight.
.TUESDAY...Southwest wind 10 to 15 knots veering north late in
the afternoon. Chance of thunderstorms in the morning. Chance of
showers through the day. Waves 1 to 2 feet.

$$
LMZ646-180900-
Wind Point WI to Winthrop Harbor IL-
305 PM CDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.THROUGH EARLY EVENING...Northeast wind 10 to 15 knots becoming
north 15 to 20 knots late in the afternoon. Partly sunny. Waves
3 to 4 feet.
.TONIGHT...North wind 10 to 20 knots veering northeast 10 to
15 knots late in the evening, then veering east 10 to 20 knots
after midnight veering southeast 15 to 20 knots early in the
morning. Partly cloudy through around midnight then becoming
mostly cloudy. Waves 3 to 4 feet building to 4 to 6 feet early in
the morning.
.MONDAY...Southeast wind 15 to 20 knots easing to 10 to 15 knots
early in the afternoon, then becoming southeast 10 to 15 knots
late in the afternoon. Slight chance of showers in the morning.
Chance of thunderstorms through the day. Chance of showers in the
afternoon. Waves 4 to 6 feet subsiding to 3 to 4 feet in the
afternoon.
.MONDAY NIGHT...Southeast wind 10 to 15 knots veering south early
in the morning. Showers and thunderstorms likely. Waves 1 to
2 feet.
.TUESDAY...Southwest wind 10 to 15 knots veering north late in
the afternoon. Chance of showers and thunderstorms through the
day. Waves 1 to 2 feet.

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