Nearshore Forecast

127
FZUS53 KDLH 010857
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
357 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.

LSZ140-141-011615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots. Patchy fog in the morning.
Chance of thunderstorms until late afternoon. Chance of rain
showers through the day. Slight chance of thunderstorms late 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.

$$

LSZ142-143-011615-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots. Chance of rain showers in
the morning. Slight chance of thunderstorms through the day.
Slight chance of rain showers in the afternoon. 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.

$$

LSZ144-145-011615-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots becoming south late in the
afternoon. Slight chance of rain showers until late afternoon,
then slight chance of sprinkles late in the afternoon. 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. 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.

$$

LSZ146-011615-
Port Wing to Sand Island WI-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms early in the morning. Slight chance of showers
until late afternoon, then slight chance of sprinkles late in the
afternoon. 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.

$$

LSZ147-011615-
Sand Island to Bayfield WI-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms early in the morning. Slight chance of showers
until late afternoon, then slight chance of sprinkles late in the
afternoon. 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.

$$

LSZ150-011615-
Outer Apostle Islands Beyond 5 NM from Mainland-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms early in the morning. Slight chance of showers
until late afternoon, then slight chance of sprinkles late in the
afternoon. 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.

$$

LSZ121-011615-
Chequamegon Bay-Bayfield to Oak Point WI-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 knots becoming south late in the
afternoon. Slight chance of rain showers 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.

$$

LSZ148-011615-
Oak Point to Saxon Harbor WI-
357 AM CDT Mon Sep 1 2025

.TODAY...Southwest wind 5 to 10 knots becoming east late in the
afternoon. Slight chance of rain showers 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

Huyck

Open Waters Forecast

235
FZUS63 KMQT 010801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 AM EDT Mon Sep 1 2025

For waters beyond 5 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.

.SYNOPSIS...

30.2 inch high pressure remains sprawled out over the Great Lakes
through today. A 29.8 inch low looks to move near or over Lake
Superior Tuesday evening; expect the low to progressively deepen to
around 29.5 inches Wednesday as it lifts out of Lake Superior
towards James Bay, eventually arriving Thursday morning. This low
then deepens to 29.2 inches by Friday morning as it retrogrades to
the southern shoreline of Hudson Bay before progressively weakening
to 29.5 inches again by Saturday as it spins back into northern
Ontario before lifting into far northern Quebec.


LSZ162-012000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EDT Mon Sep 1 2025 /301 AM CDT Mon Sep 1 2025/

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Isolated
showers and thunderstorms. Waves calm to 2 feet.
.TODAY...Southwest winds 5 to 15 knots. Isolated showers and
thunderstorms through early afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of showers and thunderstorms
by mid afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves building to 1 to 3 feet.
.WEDNESDAY...North winds 15 to 25 knots becoming northwest 20 to
30 knots by mid afternoon. A chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots. A chance of
showers. Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 10 to 20 knots. A chance of showers. Waves
subsiding to calm to 2 feet.
.FRIDAY...Northwest winds 15 to 25 knots. Waves building to 1 to
3 feet.

$$

LSZ263-012000-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
401 AM EDT Mon Sep 1 2025

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Isolated
showers and thunderstorms. Waves calm to 2 feet.
.TODAY...Southwest winds 5 to 15 knots. Isolated showers and
thunderstorms through early afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of showers and a slight
chance of thunderstorms by mid afternoon. Waves building to 1 to
3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots becoming north
15 to 25 knots after midnight. Showers and a chance of
thunderstorms. Waves subsiding to calm to 2 feet, then building
to 2 to 4 feet.
.WEDNESDAY...North winds 15 to 25 knots backing northwest by mid
afternoon. A chance of showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots. A chance of
showers. Waves 3 to 6 feet occasionally to 8 feet.
.THURSDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers. Waves subsiding to 1 to 3 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ264-012000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EDT Mon Sep 1 2025

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest late.
Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. A slight chance of showers and thunderstorms by mid
afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming north
15 to 25 knots after midnight. Showers and a chance of
thunderstorms. Waves subsiding to calm to 2 feet, then building
to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. A chance of showers. Waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A chance of showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves
subsiding to 1 to 3 feet.
.FRIDAY...Northwest winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet.

$$

LSZ265-012000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EDT Mon Sep 1 2025

.EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southwest winds 5 to 15 knots backing south in the
afternoon, then becoming southeast 10 to 20 knots late. Isolated
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering southwest late.
Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south in the
afternoon, then becoming southeast 10 to 20 knots late. Waves
calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots veering west
after midnight. A chance of showers through midnight. A chance of
thunderstorms. Showers likely after midnight. Waves calm to
2 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Showers likely through early
afternoon, then a chance of showers by mid afternoon. Waves
building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. A chance of showers. Waves
subsiding to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots becoming southwest 15 to
25 knots. A chance of showers. Waves subsiding to calm to 2 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of showers.
Waves calm to 2 feet.

$$

LSZ266-012000-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
401 AM EDT Mon Sep 1 2025

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southwest winds 5 to 15 knots backing southeast late.
Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. Waves calm to 2 feet.
.TUESDAY...Southwest winds 10 to 20 knots backing south in the
afternoon, then diminishing to 5 to 15 knots late. Waves calm to
2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A slight chance of showers through midnight. A
chance of thunderstorms. Showers likely after midnight. Waves
building to 2 to 4 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Showers likely through early
afternoon. A chance of showers by mid afternoon. Waves building
to 4 to 7 feet occasionally to 9 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. A chance of showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.THURSDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of showers. Waves subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers. Waves subsiding to 1 to 3 feet,
then building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ267-012000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EDT Mon Sep 1 2025

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing southeast late. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing southeast late. Waves
calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of showers and a slight chance
of thunderstorms after midnight. Waves building to 1 to 3 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming west 20 to
30 knots by mid afternoon. Showers and a chance of thunderstorms.
Waves building to 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY NIGHT...West winds 15 to 25 knots. A chance of
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 20 to 30 knots becoming southwest 15 to
25 knots. A chance of showers. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots veering northwest. Showers
likely, then a chance of showers. Waves subsiding to 1 to 3 feet,
then building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ261-011400-
MAFOR 0109/
Superior West 14510 11510 11400 11410 11510. Waves 2 feet or
less.

Superior North Central 11500 14510 12410 11500. Waves 1 to 2
feet.

Superior South Central 12500 11400 13300 12410. Waves 2 feet or
less.

Superior East 13410 11400 11300 13410. Waves 1 to 2 feet.

$$

WFO MQT

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

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

Beach Hazards

818
FZUS53 KDLH 011009
SRFDLH

Surf Zone Forecast
National Weather Service Duluth MN
509 AM CDT Mon Sep 1 2025

MNZ037-WIZ001-020415-
Carlton/Southern St. Louis-Douglas-
Including the beaches of Minnesota/Park Point and Wisconsin Point
509 AM CDT Mon Sep 1 2025

.TODAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
UV Index**..................High.
Water Temperature...........In the lower 60s.
Weather.....................Mostly sunny. A slight chance of
showers.
High Temperature............In the upper 70s.
Winds.......................South winds around 5 mph.
Sunrise.....................6:27 AM.
Sunset......................7:50 PM.

.TUESDAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
Weather.....................Partly sunny. A chance of showers and
thunderstorms.
High Temperature............In the mid 70s.
Winds.......................Southwest winds around 10 mph.
Sunrise.....................6:28 AM.
Sunset......................7:48 PM.

.WEDNESDAY...Wave height around 2 feet. Mostly cloudy. A chance of
showers and a slight chance of thunderstorms. Cooler. Highs in the
upper 50s. Northwest winds around 15 mph.
.THURSDAY...Wave height around 1 foot. Mostly cloudy. A slight chance
of showers. Highs in the upper 50s. West winds around 15 mph.
.FRIDAY...Wave height 1 to 2 feet. Partly sunny. Highs in the mid
50s. Northwest winds around 15 mph.

&&

Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/dlh


$$

Huyck

Other Information

Great Lakes Water Levels and Forecasts - Provided by USACE

GLERL - NOAA Great Lakes Forecast System

NWS Marine Homepage

Cold Water Safety

Park Point Beach Information

Paddle Safe Twin Ports