604
FZUS53 KDLH 041107
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
607 AM CDT TUE AUG 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-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 15 TO 20 KNOTS. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE MORNING. WAVES 2 TO
4 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 1 TO
3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE EVENING AND
OVERNIGHT.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS RISING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
WEDNESDAY NIGHT
SOUTHWEST 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-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
CHANCE OF RAIN SHOWERS EARLY IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING WEST 5 KNOTS
EARLY IN THE MORNING. PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ142-041600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 KNOTS UNTIL EARLY MORNING BECOMING
VARIABLE 10 KNOTS OR LESS. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
WEDNESDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST
5 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTHWEST
5 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY IN THE EVENING THEN
BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ143-041600-
SILVER BAY HARBOR TO TWO HARBORS MN-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS
EARLY IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 KNOTS UNTIL EARLY MORNING BECOMING
VARIABLE 10 KNOTS OR LESS. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTHWEST
5 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY IN THE EVENING THEN
BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ144-041600-
TWO HARBORS TO DULUTH MN-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY EARLY IN THE
MORNING THEN CLEARING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ145-041600-
DULUTH MN TO PORT WING WI-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST EARLY IN
THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ146-041600-
PORT WING TO SAND ISLAND WI-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST EARLY IN
THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ147-041600-
SAND ISLAND TO BAYFIELD WI-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
LSZ150-041600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ121-041600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS EARLY IN
THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
EARLY IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ148-041600-
OAK POINT TO SAXON HARBOR WI-
607 AM CDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING
TODAY
WEST WIND 5 TO 10 KNOTS. SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS EARLY IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST EARLY IN
THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST 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
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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