Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 020851
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
351 AM CDT Sat Aug 2 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.

LSZ140-141-021630-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 15 to 20 knots with gusts to around
25 knots. Areas of smoke through the day. Waves 1 to 2 feet
building to 2 to 4 feet in the afternoon.
.TONIGHT...Southwest wind 15 to 20 knots with gusts to around
25 knots becoming west 5 to 10 knots after midnight. Areas of
smoke. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Areas of smoke. Waves 1 to 2 feet.
.SUNDAY NIGHT...West wind 5 to 10 knots with gusts to around
20 knots easing to 5 knots early in the morning. Areas of smoke
in the evening. Waves 1 to 2 feet.

$$

LSZ142-143-021630-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 to 10 knots. Areas of smoke through the
day. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.SUNDAY...Southwest wind 5 knots becoming south in the afternoon.
Areas of smoke. Waves 1 foot or less.
.SUNDAY NIGHT...South wind 5 knots in the evening becoming
variable 10 knots or less, then becoming north 5 knots early in
the morning. Areas of smoke in the evening. Waves 1 foot or less.

$$

LSZ144-145-021630-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 to 10 knots. Areas of smoke through the
day. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.SUNDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Areas of smoke. Waves 1 foot or less.
.SUNDAY NIGHT...Southeast wind 5 knots. Areas of smoke in the
evening. Waves 1 foot or less.

$$

LSZ146-021630-
Port Wing to Sand Island WI-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 to 10 knots. Areas of smoke through the
day. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.SUNDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Areas of smoke. Waves 1 foot or less.
.SUNDAY NIGHT...Southeast wind 5 knots becoming south after
midnight. Areas of smoke in the evening. Waves 1 foot or less.

$$

LSZ147-021630-
Sand Island to Bayfield WI-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 to 10 knots. Areas of smoke through the
day. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.SUNDAY...Southwest wind 5 knots becoming east late in the
afternoon. Areas of smoke through the day. Waves 1 foot or less.
.SUNDAY NIGHT...Southeast wind 5 knots becoming south after
midnight. Areas of smoke in the evening. Waves 1 foot or less.

$$

LSZ150-021630-
Outer Apostle Islands Beyond 5 NM from Mainland-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 to 10 knots. Areas of smoke through the
day. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.SUNDAY...Southwest wind 5 to 10 knots becoming east late in the
afternoon. Areas of smoke. Waves 1 foot or less.
.SUNDAY NIGHT...South wind 5 knots. Areas of smoke in the
evening. Waves 1 foot or less.

$$

LSZ121-021630-
Chequamegon Bay-Bayfield to Oak Point WI-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 knots. Areas of smoke through the day.
Waves 1 foot or less.
.TONIGHT...Southwest wind 5 knots. Areas of smoke in the evening.
Waves 1 foot or less.
.SUNDAY...Southwest wind 5 knots becoming southeast late in the
afternoon. Areas of smoke in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...East wind 5 knots becoming south in the late
evening and overnight. Areas of smoke in the evening. Waves
1 foot or less.

$$

LSZ148-021630-
Oak Point to Saxon Harbor WI-
351 AM CDT Sat Aug 2 2025

.TODAY...Southwest wind 5 to 10 knots becoming south late in the
afternoon. Areas of smoke through the day. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.SUNDAY...Southwest wind 5 knots becoming east late in the
afternoon. Areas of smoke. Waves 1 foot or less.
.SUNDAY NIGHT...East wind 5 knots becoming south in the late
evening and overnight. Areas of smoke in the evening. Waves
1 foot or less.

$$

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

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