378
FZUS53 KDLH 151143
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
542 AM CST MON DEC 15 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.
LSZ140-151700-
GRAND PORTAGE TO GRAND MARAIS MN-
542 AM CST MON DEC 15 2025
..GALE WARNING IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING
...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY
NIGHT...
TODAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING. CHANCE OF FLURRIES EARLY IN THE MORNING. WAVES 4 TO
6 FEET SUBSIDING TO 1 TO 3 FEET. WAVES OCCASIONALLY TO 8 FEET.
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT, THEN
RISING TO 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT.
WAVES 1 TO 2 FEET BUILDING TO 3 TO 5 FEET EARLY IN THE MORNING.
WAVES OCCASIONALLY TO 7 FEET. A SMALL CRAFT ADVISORY MAY BE
NEEDED.
TUESDAY
SOUTHWEST WIND UP TO 30 KNOTS WITH GALES TO AROUND
40 KNOTS. SLIGHT CHANCE OF LIGHT FREEZING RAIN AND LIGHT SLEET IN
THE MORNING. WAVES 7 TO 12 FEET. WAVES OCCASIONALLY TO 15 FEET. A
GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GALES TO AROUND
35 KNOTS BECOMING NORTHWEST WITH GALES TO AROUND 35 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY. WAVES 7 TO 10 FEET SUBSIDING TO 4 TO
6 FEET. WAVES OCCASIONALLY TO 13 FEET. A GALE WARNING MAY BE
NEEDED.
LSZ141-151700-
GRAND MARAIS TO TACONITE HARBOR MN-
542 AM CST MON DEC 15 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING
...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY
NIGHT...
TODAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 KNOTS IN THE AFTERNOON. CHANCE OF FLURRIES
EARLY IN THE MORNING. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET
IN THE LATE MORNING AND AFTERNOON.
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS BUILDING TO 2 TO 4 FEET EARLY IN THE MORNING.
TUESDAY
SOUTHWEST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AND LIGHT SLEET IN THE MORNING.
WAVES 4 TO 6 FEET BUILDING TO 6 TO 9 FEET IN THE LATE MORNING AND
AFTERNOON. WAVES OCCASIONALLY TO 12 FEET. A GALE WARNING MAY BE
NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GALES TO AROUND
35 KNOTS BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 5 TO 8 FEET SUBSIDING TO 2 TO
4 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO 10 FEET. A GALE
WARNING MAY BE NEEDED.
LSZ142-151700-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
542 AM CST MON DEC 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST 5 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES
1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING AND
AFTERNOON.
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS BUILDING TO 1 TO 3 FEET EARLY IN THE MORNING.
TUESDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS LATE IN THE MORNING, THEN DECREASING TO
30 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF LIGHT FREEZING RAIN
AND LIGHT SLEET IN THE MORNING. WAVES 4 TO 7 FEET. WAVES
OCCASIONALLY TO 9 FEET. A GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 15 TO 20 KNOTS WITH GALES TO AROUND
35 KNOTS BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND
25 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO
3 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO 7 FEET. A GALE
WARNING MAY BE NEEDED.
LSZ143-151700-
SILVER BAY HARBOR TO TWO HARBORS MN-
542 AM CST MON DEC 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST 5 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES
1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING AND
AFTERNOON.
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 1 TO 2 FEET
BUILDING TO 1 TO 3 FEET EARLY IN THE MORNING.
TUESDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 30 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE
OF LIGHT FREEZING RAIN AND LIGHT SLEET IN THE MORNING. WAVES 4 TO
7 FEET. WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING MAY BE
NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GALES TO AROUND
35 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT. WAVES OCCASIONALLY TO 7 FEET. A GALE WARNING MAY BE
NEEDED.
LSZ144-151700-
TWO HARBORS TO DULUTH MN-
542 AM CST MON DEC 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST 5 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES
1 TO 3 FEET.
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND
OVERNIGHT. SLIGHT CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT.
WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET EARLY IN THE MORNING.
TUESDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 30 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE
OF LIGHT SLEET IN THE MORNING. WAVES 4 TO 6 FEET. WAVES
OCCASIONALLY TO 8 FEET. A GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GALES TO AROUND
35 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET EARLY
IN THE MORNING. WAVES OCCASIONALLY TO 7 FEET. A GALE WARNING MAY
BE NEEDED.
LSZ145-151700-
DULUTH MN TO PORT WING WI-
542 AM CST MON DEC 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY UNTIL
LATE AFTERNOON THEN BECOMING MOSTLY SUNNY. WAVES 1 TO 3 FEET
SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING AND AFTERNOON.
TONIGHT
WEST WIND 5 KNOTS BECOMING SOUTHWEST 15 TO 20 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND OVERNIGHT.
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
TUESDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF LIGHT FREEZING RAIN, SNOW AND LIGHT SLEET IN THE
MORNING. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A GALE
WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND UP TO 30 KNOTS WITH GALES TO AROUND
35 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET EARLY
IN THE MORNING. WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING MAY
BE NEEDED.
LSZ146-151700-
PORT WING TO SAND ISLAND WI-
542 AM CST MON DEC 15 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING
...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY. WAVES
2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET IN THE AFTERNOON.
TONIGHT
WEST WIND 5 KNOTS BECOMING SOUTHWEST 15 TO 20 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND OVERNIGHT.
MOSTLY CLOUDY. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET EARLY IN
THE MORNING.
TUESDAY
SOUTHWEST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 40 KNOTS. SLIGHT CHANCE OF LIGHT FREEZING RAIN AND
SNOW IN THE MORNING. WAVES 3 TO 5 FEET BUILDING TO 5 TO 8 FEET IN
THE LATE MORNING AND AFTERNOON. WAVES OCCASIONALLY TO 10 FEET. A
GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GALES TO AROUND
35 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 5 TO 8 FEET SUBSIDING TO 2 TO 4 FEET EARLY
IN THE MORNING. WAVES OCCASIONALLY TO 10 FEET. A GALE WARNING MAY
BE NEEDED.
LSZ147-151700-
SAND ISLAND TO BAYFIELD WI-
542 AM CST MON DEC 15 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING
...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET IN THE AFTERNOON.
TONIGHT
WEST WIND 5 KNOTS BECOMING SOUTHWEST 10 TO 15 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND OVERNIGHT.
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
TUESDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 40 KNOTS. SLIGHT CHANCE OF LIGHT FREEZING RAIN AND
SNOW IN THE MORNING. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET IN
THE LATE MORNING AND AFTERNOON. WAVES OCCASIONALLY TO 9 FEET. A
GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GALES TO AROUND
40 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 4 TO 7 FEET SUBSIDING
TO 2 TO 4 FEET EARLY IN THE MORNING. WAVES OCCASIONALLY TO
9 FEET. A GALE WARNING MAY BE NEEDED.
LSZ150-151700-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
542 AM CST MON DEC 15 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING
...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY.
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 2 FEET IN THE AFTERNOON.
WAVES OCCASIONALLY TO 7 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND
OVERNIGHT. MOSTLY CLOUDY. WAVES 1 TO 2 FEET BUILDING TO 1 TO
3 FEET EARLY IN THE MORNING.
TUESDAY
SOUTHWEST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 40 KNOTS. SLIGHT CHANCE OF LIGHT FREEZING RAIN AND
SNOW IN THE MORNING. WAVES 3 TO 5 FEET BUILDING TO 5 TO 8 FEET IN
THE LATE MORNING AND AFTERNOON. WAVES OCCASIONALLY TO 11 FEET. A
GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND UP TO 30 KNOTS WITH GALES TO AROUND
40 KNOTS EASING TO 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 5 TO 8 FEET SUBSIDING TO 4 TO 6 FEET EARLY
IN THE MORNING. WAVES OCCASIONALLY TO 11 FEET. A GALE WARNING MAY
BE NEEDED.
LSZ121-151700-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
542 AM CST MON DEC 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST 5 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS RISING TO 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY
IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. SLIGHT CHANCE OF LIGHT FREEZING RAIN AND SNOW IN THE
MORNING. WAVES 1 TO 3 FEET.
TUESDAY NIGHT
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES
1 TO 2 FEET.
LSZ148-151700-
OAK POINT TO SAXON HARBOR WI-
542 AM CST MON DEC 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
TODAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING WEST 5 TO 10 KNOTS IN THE AFTERNOON. MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
TUESDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 30 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE
OF LIGHT FREEZING RAIN AND SNOW IN THE MORNING. WAVES 2 TO
4 FEET. A GALE WARNING MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND
30 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 2 TO 4 FEET. A SMALL CRAFT ADVISORY MAY BE
NEEDED.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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