Marine Weather, NWS WFO Duluth, MN

Nearshore Forecast

446
FZUS53 KDLH 220339
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
939 PM CST Sat Dec 21 2024

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.

LSZ140-141-221115-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
939 PM CST Sat Dec 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CST SUNDAY THROUGH
SUNDAY AFTERNOON...

.REST OF TONIGHT...South wind 15 to 20 knots with gusts to 25
knots developing. Chance of snow. Waves 1 to 3 feet building to 2
to 4 feet after midnight.
.SUNDAY...South wind 15 to 20 knots. Chance of snow in the
morning, then chance of flurries in the afternoon. Waves 3 to
5 feet.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots becoming north early in the morning. Chance of
flurries in the evening, then slight chance of snow after
midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight.
.MONDAY...North wind 10 to 15 knots. Gusts up to 20 knots until
late afternoon. Partly sunny. Waves 1 to 2 feet.

$$

LSZ142-143-221115-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
939 PM CST Sat Dec 21 2024

.REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to
20 knots after midnight. Slight chance of snow late in the
evening, then chance of snow after midnight. Slight chance of
snow toward daybreak. Waves 1 to 3 feet.
.SUNDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Chance of flurries in the morning. Waves 1 to 3 feet.
.SUNDAY NIGHT...Southwest wind 5 to 10 knots becoming west after
midnight, then becoming north early in the morning. Chance of
flurries in the evening, then slight chance of snow after
midnight. Waves 1 foot or less.
.MONDAY...North wind 5 to 10 knots. Slight chance of snow in the
morning. Waves 1 foot or less.

$$

LSZ144-145-221115-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
939 PM CST Sat Dec 21 2024

.REST OF TONIGHT...South wind 10 to 15 knots with gusts to around
20 knots. Chance of flurries through the night. Waves 1 to
3 feet.
.SUNDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Chance of flurries in the morning. Waves 1 to 2 feet.
.SUNDAY NIGHT...South wind 5 to 10 knots becoming northeast early
in the morning. Slight chance of snow in the evening, then chance
of snow after midnight. Waves 1 foot or less.
.MONDAY...Northeast wind 5 to 10 knots. Slight chance of snow in
the morning. Waves 1 to 2 feet.

$$

LSZ146-221115-
Port Wing to Sand Island WI-
939 PM CST Sat Dec 21 2024

.REST OF TONIGHT...South wind 10 to 15 knots with gusts to around
20 knots. Chance of flurries in the late evening and early
morning. Waves 1 to 2 feet.
.SUNDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Mostly cloudy. Waves 1 to 2 feet.
.SUNDAY NIGHT...South wind 5 to 10 knots becoming northeast early
in the morning. Chance of flurries in the evening, then chance of
snow after midnight. Waves 1 foot or less.
.MONDAY...Northeast wind 10 to 15 knots. Slight chance of snow in
the morning. Waves 1 to 2 feet.

$$

LSZ147-221115-
Sand Island to Bayfield WI-
939 PM CST Sat Dec 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CST SUNDAY THROUGH
SUNDAY MORNING...

.REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to
20 knots increasing to 25 knots toward daybreak. Chance of
flurries in the late evening and early morning. Waves 1 to
2 feet.
.SUNDAY...South wind 10 to 15 knots with gusts to around 25 knots
easing to 10 knots late in the afternoon. Mostly cloudy. Waves
1 to 2 feet.
.SUNDAY NIGHT...South wind 5 to 10 knots becoming north early in
the morning. Chance of flurries in the evening, then slight
chance of snow after midnight. Waves 1 foot or less.
.MONDAY...Northeast wind 10 to 15 knots. Slight chance of snow in
the morning. Waves 1 to 2 feet.

$$

LSZ121-221115-
Chequamegon Bay-Bayfield to Oak Point WI-
939 PM CST Sat Dec 21 2024

.REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to
20 knots after midnight. Chance of flurries in the late evening
and early morning. Waves 1 to 2 feet.
.SUNDAY...South wind 10 to 15 knots. Gusts up to 20 knots until
late afternoon. Mostly cloudy. Waves 1 foot or less.
.SUNDAY NIGHT...South wind 5 to 10 knots becoming northwest early
in the morning. Chance of flurries in the evening, then chance of
snow after midnight. Waves 1 foot or less.
.MONDAY...Northeast wind 5 to 10 knots. Slight chance of snow in
the morning. Waves 1 foot or less.

$$

LSZ148-221115-
Oak Point to Saxon Harbor WI-
939 PM CST Sat Dec 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CST SUNDAY THROUGH
SUNDAY MORNING...

.REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to
20 knots increasing to 25 knots toward daybreak. Chance of
flurries in the late evening and early morning. Waves 1 to
2 feet.
.SUNDAY...South wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the afternoon. Mostly cloudy. Waves
1 to 2 feet.
.SUNDAY NIGHT...South wind 5 to 10 knots with gusts to around
20 knots becoming southwest early in the morning. Chance of
flurries in the evening, then chance of snow after midnight.
Waves 1 foot or less.
.MONDAY...Northeast wind 5 to 10 knots. Slight chance of snow in
the morning. Waves 1 to 2 feet.

$$

LSZ150-221115-
Outer Apostle Islands Beyond 5 NM from Mainland-
939 PM CST Sat Dec 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CST SUNDAY THROUGH
SUNDAY MORNING...

.REST OF TONIGHT...South wind 15 to 20 knots. Gusts up to
20 knots increasing to 25 knots toward daybreak. Chance of
flurries in the late evening and early morning. Waves 1 to
3 feet.
.SUNDAY...South wind 15 to 20 knots. Gusts up to 25 knots. Mostly
cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the
afternoon.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots becoming northwest 5 to 10 knots early in the
morning. Chance of flurries in the evening, then slight chance of
snow after midnight. Waves 1 to 2 feet.
.MONDAY...Northeast wind 10 to 15 knots. Slight chance of snow in
the morning. Waves 1 to 3 feet.

$$

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

Melde

Open Waters Forecast

898
FZUS63 KMQT 220250
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
950 PM EST Sat Dec 21 2024

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...High pressure centered over the Upper Great Lakes
tonight at 30.6 inches will slowly meander east to New England early
Monday while weakening to 30.5 inches. A 29.8 inch low pressure
system over southeast South Dakota Sunday evening will track to
western Wisconsin Monday morning while weakening to 29.9 inches.
As the low approaches Lower Michigan, it continues to fill further
to 30.0 inches Monday evening. This low pressure system exits
into the Lower Great Lakes Tuesday morning, followed by ridging
building to 30.3 inches through the remainder of Wednesday and
into Thursday as low pressure at 29.6 inches tracks across the
southern Plains.

LSZ162-221100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
950 PM EST Sat Dec 21 2024 /850 PM CST Sat Dec 21 2024/

.REST OF TONIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots by midnight. Scattered snow showers. Waves calm to
2 feet building to 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Scattered snow showers. Waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots veering north late.
A slight chance of snow showers after midnight. Waves subsiding
to calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A slight chance of snow showers in the
morning. Waves building to 1 to 3 feet, then subsiding to calm to
2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots backing south. Waves
calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-221100-
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-
950 PM EST Sat Dec 21 2024

.REST OF TONIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots by midnight. Scattered snow showers. Waves calm to
2 feet building to 2 to 4 feet.
.SUNDAY...South winds 15 to 25 knots diminishing to 10 to 20
knots by mid afternoon. Scattered snow showers. Waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots veering southwest by
midnight, then diminishing to 5 to 15 knots late. A slight chance
of snow showers. Waves subsiding to calm to 2 feet.
.MONDAY...Northeast winds 10 to 20 knots backing north in the
afternoon. A slight chance of snow showers. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots veering southwest in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots. Waves building
to 1 to 3 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing south. Waves
subsiding to calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-221100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
950 PM EST Sat Dec 21 2024

.REST OF TONIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots late. Scattered snow showers. Waves calm to 2 feet
building to 2 to 4 feet.
.SUNDAY...South winds 10 to 20 knots increasing to 15 to 25 knots
by late morning, then diminishing to 10 to 20 knots by mid
afternoon. Scattered snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots veering southwest by
midnight, then diminishing to 5 to 15 knots late. A slight chance
of snow showers. Waves subsiding to 1 to 3 feet.
.MONDAY...North winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. A slight chance of snow showers in the morning.
Waves subsiding to calm to 2 feet, then building to 2 to 4 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast after
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots veering southwest in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots. Waves building
to 1 to 3 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing south. Waves
subsiding to calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-221100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
950 PM EST Sat Dec 21 2024

.REST OF TONIGHT...Southwest winds 5 to 15 knots becoming south
10 to 20 knots by midnight, then increasing to 15 to 25 knots
late. Waves calm to 2 feet building to 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then diminishing to 15 to 25 knots by mid
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...South winds 15 to 25 knots becoming southwest
10 to 20 knots by midnight. A slight chance of snow showers.
Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots becoming north 10 to
20 knots in the afternoon. A slight chance of snow showers. A
slight chance of rain showers in the afternoon. Waves building to
1 to 3 feet.
.MONDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves building to 2 to 4 feet, then
subsiding to calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots backing south. Waves
calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-221100-
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-
950 PM EST Sat Dec 21 2024

.REST OF TONIGHT...South winds 5 to 15 knots increasing to 15 to
25 knots late. Scattered snow showers. Waves calm to 2 feet
building to 2 to 4 feet.
.SUNDAY...South winds 20 to 30 knots. Scattered snow showers.
Waves building to 6 to 9 feet occasionally to 11 feet.
.SUNDAY NIGHT...South winds 20 to 30 knots becoming southwest
15 to 25 knots by midnight, then diminishing to 10 to 20 knots
late. A slight chance of snow showers. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
.MONDAY...Southwest winds 5 to 15 knots veering north in the
afternoon. A slight chance of snow showers. Waves subsiding to
calm to 2 feet, then building to 1 to 3 feet.
.MONDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves building to 2 to 4 feet, then
subsiding to calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. Waves building to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots backing south. Waves
subsiding to calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-221100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
950 PM EST Sat Dec 21 2024

.REST OF TONIGHT...South winds 5 to 15 knots increasing to 15 to
25 knots late. Scattered snow showers. Waves calm to 2 feet
building to 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots increasing to 20 to
30 knots. Scattered snow showers. Waves building to 4 to 7 feet
occasionally to 9 feet.
.SUNDAY NIGHT...South winds 20 to 30 knots diminishing to 15 to
25 knots late. Scattered snow showers. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
.MONDAY...South winds 10 to 20 knots backing north in the
afternoon. A chance of snow showers. Waves subsiding to calm to
2 feet.
.MONDAY NIGHT...Northeast winds 10 to 20 knots. Waves calm to
2 feet.
.TUESDAY...East winds 5 to 15 knots veering south in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. Waves building to 1 to 3 feet.
.WEDNESDAY...South winds 10 to 20 knots. Waves subsiding to calm
to 2 feet.
.THURSDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$
LSZ261-221100-
MAFOR 2204/
Superior West 11410 12420 11430 13420 11520. Waves 1 to 5 feet.

Superior North Central 11410 12420 14430 11520. Waves 2 to 6 feet.

Superior South Central 11410 19417 11420 13430 12440 11430. Waves
1 to 2 feet building to 2 to 4 feet overnight. Waves 3 to 6 feet
Sunday and Sunday evening.

Superior East 11400 19407 11420 19427 11420 11430 11430 19437
13440 19447. Waves 1 foot or less building to 1 to 3 feet
overnight. Waves 3 to 6 feet building to 5 to 8 feet Sunday and
Sunday evening.

$$

JSS

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

This product is only issued between May 26th and October 1st.

Other Information

Great Lakes Water Levels and Forecasts - Provided by USACE

GLERL - NOAA Great Lakes Forecast System

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Park Point Beach Information

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