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FZUS53 KDLH 011509
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1009 AM CDT Mon Sep 1 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.

LSZ140-141-012215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms late in the morning. Chance of showers through the
day. Chance of thunderstorms in the afternoon. Waves 1 foot or
less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of rain
showers. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late morning and afternoon. Slight chance of sprinkles in the
morning, then chance of showers and thunderstorms in the
afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots becoming northwest with gusts to around 25 knots after
midnight. Chance of thunderstorms in the evening. Chance of rain
showers through the night. Slight chance of thunderstorms after
midnight. Waves 1 to 2 feet.

$$

LSZ142-143-012215-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers and thunderstorms. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles through the night. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the afternoon. Slight chance of rain showers in the
morning, then chance of showers and thunderstorms in the
afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
with gusts to around 20 knots early in the morning. Chance of
thunderstorms in the evening. Rain showers likely through the
night. Slight chance of thunderstorms after midnight. Waves 1 to
2 feet.

$$

LSZ144-145-012215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 knots becoming south late.
Slight chance of showers in the late morning and early afternoon,
then slight chance of sprinkles late. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles through the night. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Patchy fog in the
morning. Slight chance of rain showers in the morning, then
chance of showers and thunderstorms in the afternoon. Waves
1 foot or less.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
10 to 15 knots with gusts to around 20 knots early in the
morning. Chance of thunderstorms in the evening. Rain showers
likely through the night. Slight chance of thunderstorms after
midnight. Waves 1 to 2 feet.

$$

LSZ146-012215-
Port Wing to Sand Island WI-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers in the late morning and early afternoon, then slight
chance of sprinkles late. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 10 to 15 knots becoming northwest with
gusts to around 20 knots after midnight. Chance of thunderstorms
in the evening. Rain showers likely through the night. Slight
chance of thunderstorms after midnight. Waves 1 to 2 feet.

$$

LSZ147-012215-
Sand Island to Bayfield WI-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers in the late morning and early afternoon, then slight
chance of sprinkles late. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the morning, then chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
10 to 15 knots with gusts to around 20 knots after midnight.
Chance of thunderstorms in the evening. Rain showers likely
through the night. Slight chance of thunderstorms after midnight.
Waves 1 to 2 feet.

$$

LSZ150-012215-
Outer Apostle Islands Beyond 5 NM from Mainland-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers in the late morning and early afternoon, then slight
chance of sprinkles late. Waves 1 to 2 feet.
.TONIGHT...South wind 5 to 10 knots becoming southwest after
midnight. Slight chance of sprinkles after midnight. Waves 1 foot
or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of thunderstorms
and slight chance of rain showers in the afternoon. Waves 1 to
2 feet.
.TUESDAY NIGHT...Southwest wind 10 to 15 knots becoming northwest
with gusts to around 20 knots after midnight. Rain showers and
chance of thunderstorms in the evening, then chance of rain
showers and slight chance of thunderstorms after midnight. Waves
1 to 3 feet.

$$

LSZ121-012215-
Chequamegon Bay-Bayfield to Oak Point WI-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 knots becoming south late.
Slight chance of showers late in the morning, then slight chance
of sprinkles early in the afternoon. Waves 1 foot or less.
.TONIGHT...South wind 5 knots becoming southwest after midnight.
Slight chance of sprinkles. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of thunderstorms
and slight chance of rain showers in the afternoon. Waves 1 foot
or less.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
after midnight. Rain showers likely and chance of thunderstorms.
Waves 1 foot or less.

$$

LSZ148-012215-
Oak Point to Saxon Harbor WI-
1009 AM CDT Mon Sep 1 2025

.REST OF TODAY...Southwest wind 5 knots becoming east late.
Slight chance of showers late in the morning, then slight chance
of sprinkles early in the afternoon. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Slight chance of sprinkles after midnight.
Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the morning, then chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
10 to 15 knots with gusts to around 20 knots after midnight.
Chance of showers and thunderstorms. Waves 1 to 2 feet.

$$

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

LR