544
FZUS53 KDLH 212200
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
500 PM CDT TUE JUL 21 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.
LSZ140-220400-
GRAND PORTAGE TO GRAND MARAIS MN-
500 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
TONIGHT
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING THEN 20 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR.
WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. MOSTLY CLEAR. WAVES 1 TO 3 FEET.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS RISING TO 15 TO 20 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE MORNING AND AFTERNOON.
SUNNY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN THE
AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ141-220400-
GRAND MARAIS TO TACONITE HARBOR MN-
500 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
LSZ142-220400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
500 PM CDT TUE JUL 21 2026
TONIGHT
NORTHWEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ143-220400-
SILVER BAY HARBOR TO TWO HARBORS MN-
500 PM CDT TUE JUL 21 2026
TONIGHT
NORTHWEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ144-220400-
TWO HARBORS TO DULUTH MN-
500 PM CDT TUE JUL 21 2026
TONIGHT
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST LATE IN THE NIGHT. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ145-220400-
DULUTH MN TO PORT WING WI-
500 PM CDT TUE JUL 21 2026
TONIGHT
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO
2 FEET.
WEDNESDAY
WEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ146-220400-
PORT WING TO SAND ISLAND WI-
500 PM CDT TUE JUL 21 2026
TONIGHT
NORTH WIND 5 KNOTS BECOMING NORTHWEST AFTER MIDNIGHT.
PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ147-220400-
SAND ISLAND TO BAYFIELD WI-
500 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
TONIGHT
NORTHWEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ150-220400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
500 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ121-220400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
500 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
TONIGHT
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ148-220400-
OAK POINT TO SAXON HARBOR WI-
500 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
TONIGHT
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO
2 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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