510
FZUS53 KDLH 041109
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
609 AM CDT MON MAY 4 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.
LSZ140-041600-
GRAND PORTAGE TO GRAND MARAIS MN-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF RAIN SHOWERS EARLY IN THE MORNING, THEN CHANCE OF SPRINKLES
LATE IN THE MORNING. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO
7 FEET.
TONIGHT
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS EARLY IN
THE MORNING. CHANCE OF FLURRIES AFTER MIDNIGHT. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 2 FEET AFTER MIDNIGHT.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF FLURRIES IN THE MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ141-041600-
GRAND MARAIS TO TACONITE HARBOR MN-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS.
CHANCE OF RAIN SHOWERS EARLY IN THE MORNING. WAVES 2 TO 4 FEET.
TONIGHT
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. CHANCE OF FLURRIES AFTER MIDNIGHT. WAVES
1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE EVENING AND
OVERNIGHT.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS UNTIL
LATE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ142-041600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
CHANCE OF RAIN SHOWERS EARLY IN THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO
2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
MORNING. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ143-041600-
SILVER BAY HARBOR TO TWO HARBORS MN-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
CHANCE OF RAIN SHOWERS EARLY IN THE MORNING, THEN CHANCE OF
SPRINKLES LATE IN THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY
CLEAR. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TUESDAY NIGHT
NORTHWEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ144-041600-
TWO HARBORS TO DULUTH MN-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 TO 3 FEET.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS EASING TO 5 KNOTS
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ145-041600-
DULUTH MN TO PORT WING WI-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS EARLY IN THE MORNING, THEN CHANCE OF RAIN
SHOWERS LATE IN THE MORNING. WAVES 2 TO 4 FEET.
TONIGHT
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET IN THE LATE EVENING AND OVERNIGHT.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS EASING TO 5 TO
10 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ146-041600-
PORT WING TO SAND ISLAND WI-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 2 TO 4 FEET.
TONIGHT
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. PARTLY
CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE
EVENING AND OVERNIGHT.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 TO 10 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ147-041600-
SAND ISLAND TO BAYFIELD WI-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 2 TO 4 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER
MIDNIGHT. MOSTLY CLEAR. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET AFTER MIDNIGHT.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING. SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ150-041600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 3 TO 5 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 2 TO
4 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
MORNING. SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ121-041600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE MORNING, THEN CHANCE
OF RAIN SHOWERS LATE IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER
MIDNIGHT. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ148-041600-
OAK POINT TO SAXON HARBOR WI-
609 AM CDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
TODAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS. SLIGHT
CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY
CLEAR. WAVES 1 TO 3 FEET.
TUESDAY
WEST WIND 10 TO 15 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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