870
FZUS53 KDLH 312314
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
614 PM CDT TUE MAR 31 2026
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.
LSZ140-011000-
GRAND PORTAGE TO GRAND MARAIS MN-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY
MORNING...
REST OF TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. CHANCE OF SNOW
SHOWERS IN THE EVENING. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES
1 TO 3 FEET BUILDING TO 2 TO 4 FEET LATE IN THE AFTERNOON.
WEDNESDAY NIGHT
EAST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF
SNOW SHOWERS IN THE EVENING, THEN CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 7 FEET. A
SMALL CRAFT ADVISORY MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
40 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 45 KNOTS IN THE AFTERNOON. FREEZING SPRAY THROUGH THE DAY.
SNOW SHOWERS LIKELY IN THE MORNING. SNOW SHOWERS AND SLIGHT
CHANCE OF FREEZING RAIN IN THE AFTERNOON. WAVES 8 TO 11 FEET.
WAVES OCCASIONALLY TO 14 FEET. A GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-011000-
GRAND MARAIS TO TACONITE HARBOR MN-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
WEST WIND 5 KNOTS BECOMING NORTH LATE IN THE
EVENING, THEN BECOMING NORTHEAST AFTER MIDNIGHT. SLIGHT CHANCE OF
SNOW SHOWERS EARLY IN THE EVENING. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET AFTER MIDNIGHT.
WEDNESDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS.
PARTLY SUNNY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN THE
AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 35 KNOTS. CHANCE OF SNOW SHOWERS. WAVES 4 TO
7 FEET. WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING MAY BE
NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
40 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 45 KNOTS IN THE AFTERNOON. CHANCE OF SNOW SHOWERS IN THE
MORNING, THEN SNOW SHOWERS AND SLIGHT CHANCE OF FREEZING RAIN IN
THE AFTERNOON. FREEZING SPRAY IN THE AFTERNOON. WAVES 6 TO 9 FEET
BUILDING TO 7 TO 12 FEET IN THE AFTERNOON. WAVES OCCASIONALLY TO
16 FEET. A GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-011000-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHEAST AFTER
MIDNIGHT. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE
EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 2 TO 4 FEET.
WEDNESDAY
EAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 3 TO
5 FEET IN THE AFTERNOON. WAVES OCCASIONALLY TO 7 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE EVENING AND OVERNIGHT. CHANCE
OF SNOW SHOWERS THROUGH THE NIGHT. FREEZING SPRAY AFTER MIDNIGHT.
WAVES 4 TO 7 FEET. WAVES OCCASIONALLY TO 10 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
35 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 40 KNOTS IN THE AFTERNOON. SNOW SHOWERS THROUGH THE DAY.
SLIGHT CHANCE OF FREEZING RAIN AND LIGHT SLEET IN THE AFTERNOON.
FREEZING SPRAY IN THE AFTERNOON. WAVES 7 TO 10 FEET BUILDING TO
9 TO 14 FEET IN THE AFTERNOON. WAVES OCCASIONALLY TO 18 FEET. A
GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-011000-
SILVER BAY HARBOR TO TWO HARBORS MN-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS TOWARD
DAYBREAK. PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY
CLOUDY. WAVES 2 TO 4 FEET.
WEDNESDAY
EAST WIND 20 TO 25 KNOTS. SLIGHT CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 4 TO
6 FEET IN THE AFTERNOON. WAVES OCCASIONALLY TO 8 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS EARLY IN THE MORNING. CHANCE OF SNOW
SHOWERS. WAVES 5 TO 8 FEET. WAVES OCCASIONALLY TO 10 FEET. A GALE
WARNING MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
40 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 45 KNOTS IN THE AFTERNOON. SNOW SHOWERS AND SLIGHT CHANCE
OF LIGHT SLEET THROUGH THE DAY. SLIGHT CHANCE OF FREEZING RAIN IN
THE AFTERNOON. WAVES 7 TO 10 FEET BUILDING TO 9 TO 14 FEET IN THE
AFTERNOON. WAVES OCCASIONALLY TO 18 FEET. A GALE WARNING MAY BE
NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-011000-
TWO HARBORS TO DULUTH MN-
614 PM CDT TUE MAR 31 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS TOWARD DAYBREAK.
PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY CLOUDY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER MIDNIGHT.
WEDNESDAY
EAST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND
30 KNOTS. SLIGHT CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
2 TO 4 FEET SUBSIDING TO 4 TO 6 FEET IN THE AFTERNOON. WAVES
OCCASIONALLY TO 8 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND UP TO 30 KNOTS. GUSTS UP TO 35 KNOTS
EARLY IN THE MORNING. CHANCE OF SNOW SHOWERS. WAVES 5 TO 8 FEET.
WAVES OCCASIONALLY TO 10 FEET. A GALE WARNING MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
40 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 45 KNOTS IN THE AFTERNOON. SNOW SHOWERS AND SLIGHT CHANCE
OF LIGHT SLEET THROUGH THE DAY. SLIGHT CHANCE OF FREEZING RAIN IN
THE AFTERNOON. WAVES 9 TO 14 FEET. WAVES OCCASIONALLY TO 18 FEET.
A GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-011000-
DULUTH MN TO PORT WING WI-
614 PM CDT TUE MAR 31 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS TOWARD DAYBREAK.
PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
WEDNESDAY
EAST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS.
SLIGHT CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 4 TO
6 FEET. WAVES OCCASIONALLY TO 8 FEET. A SMALL CRAFT ADVISORY MAY
BE NEEDED.
WEDNESDAY NIGHT
EAST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS EARLY IN THE MORNING. CHANCE OF SNOW
SHOWERS IN THE EVENING, THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES 4 TO 7 FEET. WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING
MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
35 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 40 KNOTS IN THE AFTERNOON. SNOW SHOWERS AND SLIGHT CHANCE
OF LIGHT SLEET THROUGH THE DAY. SLIGHT CHANCE OF RAIN SHOWERS AND
FREEZING RAIN IN THE AFTERNOON. WAVES 6 TO 9 FEET BUILDING TO
8 TO 13 FEET IN THE AFTERNOON. WAVES OCCASIONALLY TO 17 FEET. A
GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-011000-
PORT WING TO SAND ISLAND WI-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS TOWARD
DAYBREAK. PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY
CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
WEDNESDAY
EAST WIND 20 TO 25 KNOTS. SLIGHT CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FEET. WAVES OCCASIONALLY
TO 7 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND UP TO 30 KNOTS. CHANCE OF SNOW
SHOWERS. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS WITH GALES TO AROUND
35 KNOTS BECOMING NORTHEAST GALES TO 35 KNOTS WITH GALES TO
AROUND 40 KNOTS IN THE AFTERNOON. SNOW SHOWERS AND SLIGHT CHANCE
OF LIGHT SLEET THROUGH THE DAY. SLIGHT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. WAVES 6 TO 9 FEET BUILDING TO 7 TO 12 FEET IN THE
AFTERNOON. WAVES OCCASIONALLY TO 16 FEET. A GALE WARNING MAY BE
NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-011000-
SAND ISLAND TO BAYFIELD WI-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER
MIDNIGHT. PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY
CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
WEDNESDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND 20 TO 25 KNOTS. CHANCE OF SNOW
SHOWERS IN THE EVENING, THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE LATE MORNING AND AFTERNOON. SNOW
SHOWERS AND SLIGHT CHANCE OF LIGHT SLEET THROUGH THE DAY. SLIGHT
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 5 TO 8 FEET
BUILDING TO 7 TO 12 FEET IN THE AFTERNOON. WAVES OCCASIONALLY TO
16 FEET. A GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-011000-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
614 PM CDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE
EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 3 TO 5 FEET.
WEDNESDAY
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY. WAVES
2 TO 4 FEET SUBSIDING TO 4 TO 6 FEET IN THE AFTERNOON. WAVES
OCCASIONALLY TO 8 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS EARLY IN THE MORNING. CHANCE OF SNOW
SHOWERS. WAVES 4 TO 7 FEET. WAVES OCCASIONALLY TO 9 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
THURSDAY
EAST WIND UP TO 30 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 40 KNOTS. SNOW SHOWERS AND SLIGHT CHANCE OF LIGHT
SLEET THROUGH THE DAY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 5 TO 8 FEET BUILDING TO 9 TO 14 FEET. WAVES
OCCASIONALLY TO 18 FEET. A GALE WARNING MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-011000-
OAK POINT TO SAXON HARBOR WI-
614 PM CDT TUE MAR 31 2026
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS TOWARD
DAYBREAK. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE
EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 3 TO 5 FEET. WAVES
OCCASIONALLY TO 7 FEET.
WEDNESDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 4 TO 6 FEET IN THE
AFTERNOON. WAVES OCCASIONALLY TO 7 FEET. A SMALL CRAFT ADVISORY
MAY BE NEEDED.
WEDNESDAY NIGHT
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
IN THE EVENING THEN 25 KNOTS EARLY IN THE MORNING. CHANCE OF SNOW
SHOWERS IN THE EVENING, THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
THURSDAY
NORTHEAST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF FREEZING RAIN AND LIGHT SLEET IN THE MORNING. SNOW
SHOWERS THROUGH THE DAY. SLEET, RAIN SHOWERS AND FREEZING RAIN IN
THE AFTERNOON. WAVES 6 TO 9 FEET. WAVES OCCASIONALLY TO 12 FEET.
A SMALL CRAFT ADVISORY MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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