620
FZUS53 KDLH 232215
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
415 PM CST TUE DEC 23 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.
LSZ140-240500-
GRAND PORTAGE TO GRAND MARAIS MN-
415 PM CST TUE DEC 23 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING
TONIGHT
NORTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING NORTHEAST 5 KNOTS AFTER MIDNIGHT, THEN BECOMING
SOUTHEAST LATE IN THE NIGHT. CHANCE OF FLURRIES LATE IN THE
NIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. CHANCE OF SNOW IN THE MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
NORTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING EAST 15 TO 20 KNOTS WITH GALES TO AROUND
35 KNOTS LATE IN THE AFTERNOON. CHANCE OF SNOW IN THE AFTERNOON.
WAVES 1 TO 2 FEET BUILDING TO 3 TO 5 FEET IN THE AFTERNOON. A
GALE WARNING MAY BE NEEDED.
LSZ141-240500-
GRAND MARAIS TO TACONITE HARBOR MN-
415 PM CST TUE DEC 23 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING
TONIGHT
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHEAST LATE IN THE NIGHT. CHANCE OF FLURRIES LATE IN
THE NIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 TO 10 KNOTS BECOMING WEST LATE IN THE
AFTERNOON. SLIGHT CHANCE OF SNOW IN THE MORNING. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST
EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING EAST WITH GALES TO AROUND 35 KNOTS LATE IN THE
AFTERNOON. CHANCE OF SNOW IN THE AFTERNOON. WAVES 1 TO 2 FEET
BUILDING TO 3 TO 5 FEET IN THE AFTERNOON. A GALE WARNING MAY BE
NEEDED.
LSZ142-240500-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
415 PM CST TUE DEC 23 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING
TONIGHT
NORTHWEST WIND 5 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EARLY IN THE EVENING BECOMING VARIABLE 10 KNOTS OR LESS, THEN
BECOMING NORTHEAST 5 KNOTS AFTER MIDNIGHT BECOMING SOUTH. CHANCE
OF FLURRIES LATE IN THE NIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING WEST LATE IN THE
AFTERNOON. CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTH WIND 5 KNOTS BECOMING NORTHEAST EARLY IN
THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING EAST 15 TO 20 KNOTS WITH GALES TO AROUND
35 KNOTS LATE IN THE AFTERNOON. CHANCE OF SNOW IN THE AFTERNOON.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE AFTERNOON. A
GALE WARNING MAY BE NEEDED.
LSZ143-240500-
SILVER BAY HARBOR TO TWO HARBORS MN-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTH WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
NIGHT. CHANCE OF FLURRIES AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTH WIND 5 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 35 KNOTS. CHANCE OF SNOW AND SLIGHT CHANCE OF LIGHT
FREEZING RAIN IN THE AFTERNOON. WAVES 1 TO 2 FEET BUILDING TO
3 TO 5 FEET IN THE LATE MORNING AND AFTERNOON. A GALE WARNING MAY
BE NEEDED.
LSZ144-240500-
TWO HARBORS TO DULUTH MN-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING SOUTHEAST AFTER
MIDNIGHT. CHANCE OF FLURRIES AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTH WIND 5 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF LIGHT
FREEZING RAIN AND SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET IN THE LATE MORNING AND AFTERNOON. A
SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ145-240500-
DULUTH MN TO PORT WING WI-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST LATE IN
THE EVENING, THEN BECOMING SOUTHEAST AFTER MIDNIGHT. CHANCE OF
FLURRIES AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT.
PARTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS IN THE
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF LIGHT FREEZING RAIN
AND SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET IN THE LATE MORNING AND AFTERNOON.
LSZ146-240500-
PORT WING TO SAND ISLAND WI-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST LATE IN
THE EVENING, THEN BECOMING SOUTHEAST AFTER MIDNIGHT. CHANCE OF
FLURRIES AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN
THE MORNING. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF SNOW IN THE AFTERNOON.
WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN THE LATE MORNING AND
AFTERNOON.
LSZ147-240500-
SAND ISLAND TO BAYFIELD WI-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING NORTH LATE IN THE
EVENING, THEN BECOMING SOUTHEAST AFTER MIDNIGHT BECOMING SOUTH
LATE IN THE NIGHT. CHANCE OF FLURRIES LATE IN THE NIGHT. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 TO 10 KNOTS BECOMING WEST IN THE
AFTERNOON. CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING.
PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. CHANCE OF SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET.
LSZ150-240500-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN
THE EVENING, THEN BECOMING SOUTHEAST AFTER MIDNIGHT BECOMING
SOUTH LATE IN THE NIGHT. CHANCE OF FLURRIES LATE IN THE NIGHT.
WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. CHANCE OF FLURRIES IN THE MORNING. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN
THE MORNING. PARTLY CLOUDY. WAVES 1 TO 3 FEET.
THURSDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF SNOW IN THE AFTERNOON. WAVES 3 TO 5 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
LSZ121-240500-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTH AFTER MIDNIGHT.
CHANCE OF FLURRIES AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. CHANCE OF FLURRIES THROUGH THE DAY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTHEAST WITH
GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF SNOW IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
LSZ148-240500-
OAK POINT TO SAXON HARBOR WI-
415 PM CST TUE DEC 23 2025
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING SOUTH AFTER
MIDNIGHT. CHANCE OF FLURRIES AFTER MIDNIGHT. SLIGHT CHANCE OF
LIGHT SLEET LATE IN THE NIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON. CHANCE OF FLURRIES
THROUGH THE DAY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH IN THE LATE
EVENING AND EARLY MORNING, THEN BECOMING NORTHEAST 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 TO 2 FEET.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF FLURRIES IN THE AFTERNOON. WAVES 1 TO 3 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page