385
FZUS53 KDLH 310753
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
253 AM CDT MON AUG 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.
LSZ140-311600-
GRAND PORTAGE TO GRAND MARAIS MN-
253 AM CDT MON AUG 31 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING...
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING
TODAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHEAST 5 KNOTS EARLY IN THE AFTERNOON, THEN BECOMING
SOUTHEAST LATE IN THE AFTERNOON. RAIN SHOWERS LIKELY EARLY IN THE
MORNING. SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. CHANCE OF
RAIN SHOWERS LATE IN THE MORNING. PATCHY FOG THROUGH THE DAY.
WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PATCHY FOG IN THE
EVENING. WAVES 1 TO 2 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY SUNNY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
IN THE AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE
LATE EVENING AND OVERNIGHT.
LSZ141-311600-
GRAND MARAIS TO TACONITE HARBOR MN-
253 AM CDT MON AUG 31 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING...
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 10 TO 15 KNOTS BECOMING EAST 5 KNOTS
EARLY IN THE AFTERNOON, THEN BECOMING SOUTHWEST LATE IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE
MORNING. PATCHY FOG UNTIL LATE AFTERNOON. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ142-311600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
253 AM CDT MON AUG 31 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING...
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE
MORNING. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE MORNING INCREASING TO 25 KNOTS, THEN DECREASING TO
20 KNOTS LATE IN THE AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ143-311600-
SILVER BAY HARBOR TO TWO HARBORS MN-
253 AM CDT MON AUG 31 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING...
TODAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN
THE MORNING. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS UNTIL EARLY MORNING
BECOMING VARIABLE 10 KNOTS OR LESS. MOSTLY CLOUDY. WAVES 1 FOOT
OR LESS.
LSZ144-311600-
TWO HARBORS TO DULUTH MN-
253 AM CDT MON AUG 31 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING...
TODAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING WEST IN THE
AFTERNOON. PATCHY FOG EARLY IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS UNTIL EARLY MORNING
BECOMING VARIABLE 10 KNOTS OR LESS. MOSTLY CLOUDY. WAVES 1 FOOT
OR LESS.
LSZ145-311600-
DULUTH MN TO PORT WING WI-
253 AM CDT MON AUG 31 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING...
TODAY
NORTHEAST WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
PATCHY FOG EARLY IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 5 KNOTS BECOMING SOUTHWEST AFTER MIDNIGHT.
MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
LSZ146-311600-
PORT WING TO SAND ISLAND WI-
253 AM CDT MON AUG 31 2026
TODAY
EAST WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON. PATCHY
FOG IN THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS UNTIL EARLY MORNING BECOMING VARIABLE 10 KNOTS OR LESS.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ147-311600-
SAND ISLAND TO BAYFIELD WI-
253 AM CDT MON AUG 31 2026
TODAY
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
MORNING, THEN BECOMING WEST IN THE AFTERNOON. PATCHY FOG EARLY IN
THE MORNING. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS UNTIL EARLY MORNING BECOMING VARIABLE 10 KNOTS OR LESS.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ150-311600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
253 AM CDT MON AUG 31 2026
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH LATE IN THE
MORNING, THEN BECOMING WEST IN THE AFTERNOON. PATCHY FOG EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN
THE MORNING. WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ121-311600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
253 AM CDT MON AUG 31 2026
TODAY
SOUTHEAST WIND 5 KNOTS BECOMING NORTHWEST IN THE
AFTERNOON. PATCHY FOG EARLY IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS UNTIL EARLY MORNING
BECOMING VARIABLE 10 KNOTS OR LESS. SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
LSZ148-311600-
OAK POINT TO SAXON HARBOR WI-
253 AM CDT MON AUG 31 2026
TODAY
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
MORNING, THEN BECOMING NORTHWEST IN THE AFTERNOON. PATCHY FOG
EARLY IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST WITH GUSTS TO AROUND 20 KNOTS LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS UNTIL EARLY MORNING BECOMING VARIABLE 10 KNOTS OR LESS.
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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