Nearshore Forecast

818
FZUS53 KDLH 301503
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1003 AM CDT Mon Jun 30 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.

LSZ140-141-302215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 10 to 15 knots with gusts to
around 20 knots. Slight chance of showers and thunderstorms in
the afternoon. Waves 1 to 3 feet.
.TONIGHT...West wind 5 to 10 knots. Slight chance of rain showers
in the evening. Waves 1 to 3 feet.
.TUESDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the
late morning and afternoon. Slight chance of showers and
thunderstorms in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Mostly clear. Waves 1 to 3 feet.

$$

LSZ142-143-302215-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers and thunderstorms in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots. Slight chance of showers and
thunderstorms in the evening. Waves 1 foot or less.
.TUESDAY...West wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

LSZ144-145-302215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...West wind 10 to 15 knots. Gusts up to 20 knots
in the afternoon. Slight chance of showers and thunderstorms in
the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots. Slight chance of showers and
thunderstorms in the evening. Waves 1 to 2 feet.
.TUESDAY...West wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

LSZ146-302215-
Port Wing to Sand Island WI-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Gusts up to
20 knots in the afternoon. Slight chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots. Mostly clear. Waves 1 to
2 feet.
.TUESDAY...Southwest wind 10 to 15 knots easing to 10 knots late
in the afternoon. Sunny. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 to 2 feet.

$$

LSZ147-302215-
Sand Island to Bayfield WI-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers and thunderstorms in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots. Mostly clear. Waves 1 to
2 feet.
.TUESDAY...West wind 10 to 15 knots easing to 10 knots late in
the afternoon. Sunny. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 to 2 feet.

$$

LSZ150-302215-
Outer Apostle Islands Beyond 5 NM from Mainland-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
20 knots late in the morning. Slight chance of showers and
thunderstorms in the afternoon. Waves 1 to 3 feet.
.TONIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 to
3 feet.
.TUESDAY...West wind 10 knots becoming southwest in the late
morning and afternoon. Sunny. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 to 2 feet.

$$

LSZ121-302215-
Chequamegon Bay-Bayfield to Oak Point WI-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Chance of showers
and thunderstorms in the afternoon. Waves 1 foot or less.
.TONIGHT...West wind 5 to 10 knots. Slight chance of showers and
thunderstorms in the evening. Waves 1 foot or less.
.TUESDAY...West wind 5 to 10 knots. Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

LSZ148-302215-
Oak Point to Saxon Harbor WI-
1003 AM CDT Mon Jun 30 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Slight chance of
showers late in the morning. Chance of showers and thunderstorms
in the afternoon. Waves 1 foot or less.
.TONIGHT...West wind 5 to 10 knots. Slight chance of showers and
thunderstorms in the evening. Waves 1 foot or less.
.TUESDAY...West wind 5 to 10 knots. Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

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

Huyck

Open Waters Forecast

475
FZUS63 KMQT 301401
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 AM EDT Mon Jun 30 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...

A 29.8 inch trough remains over Lake Superior today through much of
Tuesday night as the lake becomes sandwiched between a 30.0 inch
high descending southeast over the Plains and a low over Quebec
deepening from 29.6 to 29.4 inches. 30.0 inch ridging then passes
southeast over over the Upper Great Lakes Thursday into Friday.
Then, low pressure emerging from the northern Rockies into central
Canada reintroduces troughing in the Great Lakes this weekend. This
29.6 inch trough moves through Lake Superior Saturday into Sunday.


LSZ162-302000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 AM EDT Mon Jun 30 2025 /901 AM CDT Mon Jun 30 2025/

.REST OF TODAY...Southwest winds 10 to 20 knots veering west
late. A slight chance of showers and thunderstorms by mid
afternoon. Waves calm to 2 feet building to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots. Waves subsiding to calm to
2 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. A slight chance of
showers. A slight chance of thunderstorms by mid afternoon. Waves
calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots backing northeast. A chance
of showers and thunderstorms. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots becoming southwest 10 to
20 knots. A chance of showers. A chance of thunderstorms. Showers
likely. Waves calm to 2 feet.

$$

LSZ263-302000-
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 AM EDT Mon Jun 30 2025

.REST OF TODAY...Southwest winds 5 to 15 knots. A slight chance
of showers and thunderstorms by mid afternoon. Waves calm to
2 feet building to 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest in the
afternoon, then increasing to 15 to 25 knots late. A slight
chance of showers and thunderstorms by mid afternoon. Waves
building to 2 to 4 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A slight chance of showers and
thunderstorms by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots veering southeast. A chance
of showers. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots veering southwest. A chance
of showers. Showers likely. Waves building to 1 to 3 feet.

$$

LSZ264-302000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 AM EDT Mon Jun 30 2025

.REST OF TODAY...Southwest winds 5 to 15 knots. Waves calm to
2 feet building to 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest in the
afternoon, then becoming west 15 to 25 knots late. A chance of
showers and a slight chance of thunderstorms by mid afternoon.
Waves building to 2 to 4 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots veering southwest. A chance
of showers. Showers likely. Waves building to 1 to 3 feet.

$$

LSZ265-302000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 AM EDT Mon Jun 30 2025

.REST OF TODAY...West winds 5 to 15 knots backing southwest late.
A slight chance of showers and thunderstorms by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight. A slight chance of showers through midnight. Waves
building to 1 to 3 feet.
.TUESDAY...West winds 15 to 25 knots. Waves subsiding to calm to
2 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...East winds 5 to 15 knots veering southeast. Waves
calm to 2 feet.
.FRIDAY...Southeast winds 10 to 20 knots veering south. A chance
of showers. Waves calm to 2 feet.

$$

LSZ266-302000-
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 AM EDT Mon Jun 30 2025

.REST OF TODAY...West winds 5 to 15 knots backing south late.
Patchy dense fog by late morning. A slight chance of showers and
thunderstorms by mid afternoon. Waves calm to 2 feet building to
1 to 3 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots after midnight. A slight chance of showers and
thunderstorms through midnight. Waves 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon, then diminishing to 10 to 20 knots late. A
slight chance of showers by mid afternoon. Waves building to 2 to
4 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots veering southeast. Waves
calm to 2 feet.
.FRIDAY...South winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 2 to 4 feet.

$$

LSZ267-302000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 AM EDT Mon Jun 30 2025

.REST OF TODAY...West winds 5 to 15 knots. Patchy dense fog by
late morning. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering west late. A slight
chance of showers and thunderstorms through midnight. Waves calm
to 2 feet.
.TUESDAY...West winds 10 to 20 knots. Waves building to 1 to
3 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing southeast.
Waves calm to 2 feet.
.FRIDAY...Southeast winds 10 to 20 knots veering south. A chance
of showers. Waves building to 2 to 4 feet.

$$

LSZ261-302000-
MAFOR 3015/
Superior West 12520 11620 14610 11620. Waves 1 to 3 feet.

Superior North Central 11510 12520 11510 13610 11620. Waves 1 to
3 feet.

Superior South Central 11610 11500 11410 12510 12610 11620. Waves
2 feet or less this afternoon. Waves 1 to 3 feet tonight and
Tuesday morning.

Superior East 11600 19604 11600 12400 11510 13610. Waves 1 to 3
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

796
FZUS53 KDLH 300653
SRFDLH

Surf Zone Forecast
National Weather Service Duluth MN
153 AM CDT Mon Jun 30 2025

MNZ037-WIZ001-010300-
Carlton/Southern St. Louis-Douglas-
Including the beaches of Minnesota/Park Point and Wisconsin Point
153 AM CDT Mon Jun 30 2025

.TODAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
UV Index**..................7 (High).
Water Temperature...........In the upper 50s.
Weather.....................Partly sunny. A chance of showers and
thunderstorms.
High Temperature............In the mid 70s.
Winds.......................West winds 10 to 15 mph.
Sunrise.....................5:18 AM.
Sunset......................9:06 PM.

.TUESDAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
Weather.....................Sunny.
High Temperature............In the upper 70s.
Winds.......................West winds around 10 mph.
Sunrise.....................5:19 AM.
Sunset......................9:06 PM.

.WEDNESDAY...Wave height 1 foot or less. Mostly sunny. A chance of
showers and a slight chance of thunderstorms. Highs in the mid 70s.
West winds around 10 mph.
.THURSDAY...Wave height 1 foot or less. Mostly sunny. Highs in the
upper 60s. Northeast winds around 10 mph. Likely Moderate Swim Risk.
.INDEPENDENCE DAY...Wave height around 1 foot. Partly sunny. A chance
of showers and thunderstorms. Highs in the mid 70s. Southeast winds
around 10 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


$$

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