Nearshore Marine Forecast
Issued by NWS Milwaukee/Sullivan, WI

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FZUS53 KMKX 170810
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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
310 AM CDT Fri Oct 17 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-172100-
Sheboygan to Port Washington WI-
310 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.EARLY THIS MORNING...South wind 15 to 20 knots. Mostly cloudy
with scattered showers and isolated thunderstorms. Waves 3 to
4 feet building to 3 to 5 feet early in the morning.
.TODAY...South wind 15 to 20 knots becoming 10 to 20 knots early
in the afternoon, then rising to 15 to 25 knots late in the
afternoon. Scattered showers and isolated thunderstorms in the
morning. Waves 4 to 6 feet building to 5 to 7 feet late in the
afternoon.
.TONIGHT...South wind 15 to 25 knots becoming 15 to 20 knots late
in the evening, then veering southwest after midnight easing to
10 to 15 knots early in the morning. Chance of showers and slight
chance of thunderstorms through around midnight, then showers and
a chance of thunderstorms after midnight. Waves 5 to 7 feet
subsiding to 3 to 5 feet.
.SATURDAY...Southwest wind 10 to 15 knots. Rain showers likely
and a chance of thunderstorms. Waves 3 to 4 feet subsiding to
1 to 2 feet in the afternoon.
.SATURDAY NIGHT...Southwest wind 5 to 10 knots rising to 10 to
15 knots late in the evening, then veering northwest after
midnight rising to 15 to 25 knots early in the morning. Chance of
showers through around midnight. Slight chance of thunderstorms
through the night. Rain showers likely after midnight. Waves 1 to
2 feet building to 2 to 4 feet early in the morning.

$$
LMZ644-172100-
Port Washington to North Point Light WI-
310 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.EARLY THIS MORNING...South wind 15 to 20 knots. Mostly cloudy
with isolated showers. Waves 3 to 4 feet.
.TODAY...South wind 15 to 20 knots. Isolated showers in the
morning. Waves 3 to 4 feet building to 3 to 5 feet late in the
afternoon.
.TONIGHT...South wind 15 to 20 knots veering southwest after
midnight, then easing to 10 to 15 knots early in the morning.
Gusts up to 25 knots. Chance of showers through around midnight,
then showers and a chance of thunderstorms after midnight. Waves
3 to 5 feet subsiding to 3 to 4 feet after midnight.
.SATURDAY...Southwest wind 10 to 15 knots. Showers in the
morning. Chance of thunderstorms through the day. Showers likely
in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet in
the late morning and afternoon.
.SATURDAY NIGHT...Southwest wind 5 to 10 knots rising to 10 to
15 knots late in the evening, then veering northwest 10 to
20 knots after midnight rising to 15 to 25 knots early in the
morning. Rain showers likely and a chance of thunderstorms
through around midnight, then chance of showers and slight chance
of thunderstorms after midnight. Waves around 1 foot building to
2 to 4 feet early in the morning.

$$
LMZ645-172100-
North Point Light to Wind Point WI-
310 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.EARLY THIS MORNING...South wind 15 to 20 knots. Partly cloudy
with isolated showers. Waves 3 to 4 feet.
.TODAY...South wind 15 to 20 knots. Isolated showers in the
morning. Waves 3 to 4 feet.
.TONIGHT...South wind 15 to 20 knots veering southwest early in
the morning. Gusts up to 25 knots. Chance of showers through
around midnight, then showers and a chance of thunderstorms after
midnight. Waves 3 to 4 feet.
.SATURDAY...Southwest wind 15 to 20 knots easing to 10 to
15 knots in the afternoon. Showers in the morning. Chance of
thunderstorms through the day. Showers likely in the afternoon.
Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon.
.SATURDAY NIGHT...Southwest wind 5 to 10 knots rising to 10 to
15 knots late in the evening, then veering northwest 10 to
20 knots after midnight rising to 15 to 25 knots early in the
morning. Rain showers likely through around midnight. Chance of
thunderstorms through the night. Rain showers after midnight.
Waves around 1 foot building to 2 to 4 feet early in the morning.

$$
LMZ646-172100-
Wind Point WI to Winthrop Harbor IL-
310 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.EARLY THIS MORNING...South wind 15 to 20 knots. Partly cloudy
with isolated showers. Waves 3 to 4 feet.
.TODAY...South wind 15 to 20 knots. Isolated showers in the
morning. Waves 3 to 4 feet.
.TONIGHT...South wind 15 to 20 knots veering southwest early in
the morning. Slight chance of showers through around midnight,
then showers and a chance of thunderstorms after midnight. Waves
3 to 4 feet.
.SATURDAY...Southwest wind 15 to 20 knots easing to 10 to
15 knots in the afternoon. Showers and a chance of thunderstorms.
Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon.
.SATURDAY NIGHT...Southwest wind 5 to 10 knots rising to 10 to
15 knots late in the evening, then veering west after midnight
becoming northwest 15 to 20 knots with gusts to around 25 knots
early in the morning. Rain showers likely through around
midnight. Chance of thunderstorms through the night. Rain showers
after midnight. Waves around 1 foot building to 2 to 4 feet early
in the morning.

$$
See Lake Michigan Open Waters Forecast for Sunday through Tuesday.