Nearshore Forecast

544
FZUS53 KDLH 210306
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1006 PM CDT Sun Jul 20 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.

LSZ140-141-211015-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...North wind 5 knots becoming northeast toward
daybreak. Areas of smoke through the night. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.
.MONDAY NIGHT...East wind 5 to 10 knots. Slight chance of rain
showers in the evening. Slight chance of thunderstorms through
the night. Chance of rain showers after midnight. Waves 1 to
2 feet.
.TUESDAY...Southeast wind 5 to 10 knots. Chance of rain showers.
Waves 1 to 2 feet.

$$

LSZ142-143-211015-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke
through the night. Waves 1 foot or less.
.MONDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
late in the afternoon. Slight chance of rain showers in the
afternoon. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 10 to 15 knots easing to 5 knots
after midnight. Slight chance of rain showers in the evening.
Slight chance of thunderstorms through the night. Chance of rain
showers after midnight. Waves 1 to 2 feet.
.TUESDAY...East wind 5 to 10 knots. Chance of rain showers
through the day. Slight chance of thunderstorms in the afternoon.
Waves 1 foot or less.

$$

LSZ144-145-211015-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke
in the late evening and early morning. Waves 1 foot or less.
.MONDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
late in the afternoon. Areas of smoke through the day. Slight
chance of rain showers in the afternoon. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 10 to 15 knots becoming east
5 knots after midnight. Areas of smoke. Slight chance of showers
and thunderstorms. Waves 1 to 2 feet.
.TUESDAY...East wind 5 to 10 knots. Slight chance of showers in
the morning. Chance of showers and thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ146-211015-
Port Wing to Sand Island WI-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...Northeast wind 5 to 10 knots. Partly cloudy
late in the evening then becoming mostly cloudy. Waves 1 foot or
less.
.MONDAY...Northeast wind 10 to 15 knots. Areas of smoke in the
afternoon. Waves 1 to 2 feet.
.MONDAY NIGHT...East wind 5 to 10 knots. Areas of smoke. Slight
chance of showers and thunderstorms. Waves 1 to 2 feet.
.TUESDAY...East wind 5 to 10 knots. Chance of showers and slight
chance of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ147-211015-
Sand Island to Bayfield WI-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...East wind 5 to 10 knots. Areas of smoke late
in the evening. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Areas of smoke in the
afternoon. Waves 1 foot or less.
.MONDAY NIGHT...East wind 5 to 10 knots becoming southeast after
midnight. Areas of smoke. Slight chance of showers and
thunderstorms. Waves 1 foot or less.
.TUESDAY...Southeast wind 5 knots becoming east in the afternoon.
Chance of showers and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ150-211015-
Outer Apostle Islands Beyond 5 NM from Mainland-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...East wind 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.
.MONDAY NIGHT...East wind 5 to 10 knots becoming southeast after
midnight. Slight chance of showers and thunderstorms. Waves 1 to
2 feet.
.TUESDAY...Southeast wind 5 to 10 knots becoming east in the
afternoon. Chance of showers and slight chance of thunderstorms
in the afternoon. Waves 1 foot or less.

$$

LSZ121-211015-
Chequamegon Bay-Bayfield to Oak Point WI-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...Northeast wind 5 knots. Partly cloudy late in
the evening then becoming mostly cloudy. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Areas of smoke. Waves 1 foot
or less.
.MONDAY NIGHT...Northeast wind 5 to 10 knots becoming south early
in the morning. Areas of smoke through the night. Slight chance
of showers through the night. Slight chance of thunderstorms
after midnight. Waves 1 foot or less.
.TUESDAY...Southeast wind 5 to 10 knots. Chance of showers and
slight chance of thunderstorms in the afternoon. Waves 1 foot or
less.

$$

LSZ148-211015-
Oak Point to Saxon Harbor WI-
1006 PM CDT Sun Jul 20 2025

.REST OF TONIGHT...East wind 5 knots. Partly cloudy in the late
evening and early morning then becoming mostly cloudy. Waves
1 foot or less.
.MONDAY...East wind 5 knots rising to 5 to 10 knots in the
afternoon. Partly sunny. Waves 1 foot or less.
.MONDAY NIGHT...East wind 5 to 10 knots becoming south in the
late evening and overnight. Areas of smoke in the evening. Slight
chance of showers through the night. Slight chance of
thunderstorms after midnight. Waves 1 foot or less.
.TUESDAY...South wind 5 to 10 knots becoming southeast in the
afternoon. Slight chance of showers through the day. Slight
chance of thunderstorms in the afternoon. Waves 1 foot or less.

$$

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

HA

Open Waters Forecast

661
FZUS63 KMQT 210202
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 PM EDT Sun Jul 20 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...

30.1 inch high pressure will continue to push eastward over Lake
Superior tonight, moving into the Lower Great Lakes by Monday
afternoon and then into New England by Tuesday afternoon as it
builds to 30.2 inches. Low pressure pushes out of the Rockies on
Tuesday while another moves through Hudson Bay. Between these, 29.8
inch troughing is expected to persist over Lake Superior late
Tuesday into early Friday.


LSZ162-210800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EDT Sun Jul 20 2025 /901 PM CDT Sun Jul 20 2025/

.REST OF TONIGHT...Northeast winds 5 to 15 knots veering east
late. Areas of smoke. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
late. A slight chance of showers by mid afternoon. Waves calm to
2 feet.
.MONDAY NIGHT...East winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering southeast late. A chance of
showers. Areas of smoke after midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. A chance of showers and a
slight chance of thunderstorms by mid afternoon. Waves calm to
2 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. Showers and a chance of
thunderstorms. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. A chance of showers and thunderstorms.
Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots backing northwest. A
chance of showers. Waves calm to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots backing east. Waves calm
to 2 feet.

$$

LSZ263-210800-
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-
1001 PM EDT Sun Jul 20 2025

.REST OF TONIGHT...Northeast winds less than 10 knots veering
east after midnight. Areas of smoke by midnight. Waves calm to
2 feet.
.MONDAY...East winds less than 10 knots increasing to 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering south late. A
slight chance of showers. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots backing east by mid
afternoon. A slight chance of showers by mid afternoon. Waves
calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Showers and a chance of thunderstorms. Waves calm
to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. A chance of showers
and thunderstorms. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots after midnight. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots backing west. A chance of
showers. Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.

$$

LSZ264-210800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 PM EDT Sun Jul 20 2025

.REST OF TONIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots after midnight. Waves calm to 2 feet.
.MONDAY...South winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots veering south late.
Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. A slight chance of showers by mid afternoon. Waves
calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. A chance of showers through midnight. A chance of
thunderstorms. Showers after midnight. Waves building to 1 to
3 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Showers likely
through early afternoon. A chance of thunderstorms. A chance of
showers by mid afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots becoming northwest
less than 10 knots after midnight. A chance of showers. Waves
calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing west. A chance
of showers. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots becoming southwest less than
10 knots. Waves calm to 2 feet.

$$

LSZ265-210800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 PM EDT Sun Jul 20 2025

.REST OF TONIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots late. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots. Waves calm to
2 feet.
.TUESDAY...South winds 10 to 20 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots. A chance of showers
through midnight. A chance of thunderstorms. Showers likely after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Showers likely and a
chance of thunderstorms. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Showers likely
through midnight. A chance of thunderstorms. A chance of showers
after midnight. Waves calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots backing northwest. A
chance of showers and thunderstorms. Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.

$$

LSZ266-210800-
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-
1001 PM EDT Sun Jul 20 2025

.REST OF TONIGHT...West winds 5 to 15 knots veering northwest
after midnight, then backing west late. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing south in the
afternoon, then backing east late. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering south late. Waves calm to
2 feet.
.TUESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots. A chance of showers
through midnight. A chance of thunderstorms. Showers likely after
midnight. Waves building to 2 to 4 feet.
.WEDNESDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Showers likely through early
afternoon. A chance of thunderstorms. A chance of showers by mid
afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots. A chance of showers
and thunderstorms. Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.

$$

LSZ267-210800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 PM EDT Sun Jul 20 2025

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing west
late. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing northeast in the
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.TUESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots. A chance of showers
and a slight chance of thunderstorms. Waves building to 1 to
3 feet.
.WEDNESDAY...South winds 10 to 20 knots. Showers likely through
early afternoon. A chance of thunderstorms. A chance of showers
by mid afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming west 5 to
15 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots veering northwest. A chance
of showers and thunderstorms. Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ261-210800-
MAFOR 2103/
Superior West 11100 14200 13210. Waves 2 feet or less.

Superior North Central 13600 11400 12300 12310. Waves 1 foot or
less.

Superior South Central 13600 11400 11300 12210 11310. Waves 1
foot or less.

Superior East 12700 11600 11500 11400 11300 11200 11300. Waves 2
feet or less.

$$

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

578
FZUS53 KDLH 200903
SRFDLH

Surf Zone Forecast
National Weather Service Duluth MN
403 AM CDT Sun Jul 20 2025

MNZ037-WIZ001-210315-
Carlton/Southern St. Louis-Douglas-
Including the beaches of Minnesota/Park Point and Wisconsin Point
403 AM CDT Sun Jul 20 2025

.TODAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
UV Index**..................Very High.
Water Temperature...........In the low 60s.
Weather.....................Mostly sunny. Areas of smoke.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 5 to 10 mph.
Sunrise.....................5:35 AM.
Sunset......................8:55 PM.

.MONDAY...
Swim Risk*..................Moderate.
Wave Height.................Around 1 foot, building to around 2
feet in the afternoon.
Weather.....................Partly sunny. Areas of smoke.
High Temperature............Around 70.
Winds.......................East winds around 10 mph.
Sunrise.....................5:36 AM.
Sunset......................8:54 PM.

.TUESDAY...Wave height around 1 foot. Mostly cloudy. A chance of
showers and a slight chance of thunderstorms. Highs in the lower 70s.
Southeast winds around 10 mph.
.WEDNESDAY...Wave height 1 foot or less. Mostly cloudy. A chance of
showers and thunderstorms. Highs in the upper 70s. West winds around
5 mph.
.THURSDAY...Wave height 1 foot or less. Mostly sunny. A chance of
showers and a slight chance of thunderstorms. Highs in the upper 70s.
Northwest winds around 5 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