110
FZUS53 KDLH 161941
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
241 PM CDT Wed Jul 16 2025

For waters within five nautical miles of shore on Lake Superior.

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

LSZ140-141-170415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
241 PM CDT Wed Jul 16 2025

.TONIGHT...Northeast wind 5 to 10 knots becoming north in the
late evening and overnight. Slight chance of rain showers in the
evening. Waves 1 to 2 feet.
.THURSDAY...North wind 5 knots becoming west late in the morning,
then becoming southwest 10 to 15 knots in the afternoon. Sunny.
Waves 1 to 2 feet.
.THURSDAY NIGHT...West wind 10 to 15 knots. Partly cloudy. Waves
1 to 2 feet.
.FRIDAY...Southwest wind 5 to 10 knots. Slight chance of rain
showers in the morning, then chance of rain showers in the
afternoon. Waves 1 foot or less.

$$

LSZ142-170415-
Taconite Harbor to Silver Bay Harbor MN-
241 PM CDT Wed Jul 16 2025

.TONIGHT...North wind 5 to 10 knots easing to 5 knots after
midnight. Chance of rain showers early in the evening, then
slight chance of rain showers late in the evening. Waves 1 to
3 feet.
.THURSDAY...Northwest wind 5 knots becoming southwest in the
afternoon. Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...Southwest wind 5 to 10 knots becoming west
after midnight. Partly cloudy. Waves 1 foot or less.
.FRIDAY...Southwest wind 5 knots becoming south late in the
afternoon. Chance of rain showers through the day. Slight chance
of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ143-144-170415-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
241 PM CDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 10 to 15 knots with gusts to around
25 knots becoming north 5 to 10 knots after midnight. Chance of
rain showers in the evening. Waves 2 to 4 feet subsiding to 1 to
2 feet after midnight.
.THURSDAY...North wind 5 to 10 knots becoming south in the
afternoon. Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...Southwest wind 5 knots becoming west after
midnight. Mostly clear. Waves 1 foot or less.
.FRIDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Chance of rain showers through the day. Slight chance
of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ145-146-170415-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
241 PM CDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 15 to 20 knots with gusts to around
25 knots becoming north 5 to 10 knots after midnight. Chance of
rain showers in the evening, then slight chance of rain showers
after midnight. Waves 3 to 5 feet subsiding to 1 to 2 feet after
midnight.
.THURSDAY...Northwest wind 5 to 10 knots becoming southwest in
the afternoon. Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...South wind 5 knots. Mostly clear. Waves 1 foot
or less.
.FRIDAY...South wind 5 knots becoming southeast late in the
afternoon. Chance of rain showers through the day. Slight chance
of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ147-170415-
Sand Island to Bayfield WI-
241 PM CDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 10 to 15 knots with gusts to around
25 knots becoming north 5 knots late in the night. Chance of rain
showers in the evening, then slight chance of rain showers after
midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight.
.THURSDAY...Northwest wind 5 knots becoming south late in the
afternoon. Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...South wind 5 knots. Mostly clear. Waves 1 foot
or less.
.FRIDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Slight chance of rain showers in the morning, then
chance of rain showers and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ150-170415-
Outer Apostle Islands Beyond 5 NM from Mainland-
241 PM CDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 15 to 20 knots with gusts to around
25 knots becoming north 5 to 10 knots after midnight. Chance of
rain showers in the evening, then slight chance of rain showers
after midnight. Waves 3 to 5 feet subsiding to 1 to 2 feet. Waves
occasionally to 7 feet.
.THURSDAY...Northwest wind 5 to 10 knots becoming southwest in
the afternoon. Sunny. Waves 1 to 2 feet.
.THURSDAY NIGHT...South wind 5 knots. Mostly clear. Waves 1 foot
or less.
.FRIDAY...Southwest wind 5 knots becoming south late in the
afternoon. Slight chance of rain showers in the morning, then
chance of rain showers and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ121-170415-
Chequamegon Bay-Bayfield to Oak Point WI-
241 PM CDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 10 to 15 knots with gusts to around
25 knots becoming north 5 to 10 knots late in the night. Chance
of rain showers early in the evening, then rain showers likely
late in the evening. Slight chance of rain showers after
midnight. Waves 1 to 2 feet.
.THURSDAY...North wind 5 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...Southeast wind 5 knots becoming southwest in
the late evening and overnight. Mostly clear. Waves 1 foot or
less.
.FRIDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Slight chance of rain showers in the morning, then
chance of rain showers and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ148-170415-
Oak Point to Saxon Harbor WI-
241 PM CDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 15 to 20 knots with gusts to around
25 knots becoming north 5 to 10 knots after midnight. Chance of
rain showers early in the evening, then rain showers likely late
in the evening. Chance of rain showers after midnight. Waves 4 to
6 feet subsiding to 1 to 2 feet. Waves occasionally to 7 feet.
.THURSDAY...North wind 5 to 10 knots becoming east late in the
afternoon. Sunny. Waves 1 to 2 feet.
.THURSDAY NIGHT...South wind 5 knots becoming southwest after
midnight. Mostly clear. Waves 1 foot or less.
.FRIDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Slight chance of rain showers in the morning, then
chance of rain showers and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

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

Rothstein