035
FZUS53 KDLH 171437
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
937 AM CDT WED SEP 17 2025
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.
LSZ140-141-172215-
GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
937 AM CDT WED SEP 17 2025
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTH WIND 5 KNOTS BECOMING NORTHEAST WITH GUSTS TO
AROUND 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. PARTLY SUNNY. WAVES 1 TO 2 FEET.
THURSDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY IN
THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ142-172215-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
937 AM CDT WED SEP 17 2025
REST OF TODAY
SOUTHWEST WIND 5 KNOTS IN THE LATE MORNING AND
EARLY AFTERNOON BECOMING VARIABLE 10 KNOTS OR LESS. AREAS OF
DENSE FOG EARLY IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY IN THE
EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES
1 TO 3 FEET.
THURSDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING THEN 20 KNOTS EARLY IN THE MORNING.
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ143-172215-
SILVER BAY HARBOR TO TWO HARBORS MN-
937 AM CDT WED SEP 17 2025
REST OF TODAY
SOUTHWEST WIND 5 KNOTS LATE IN THE MORNING
BECOMING VARIABLE 10 KNOTS OR LESS. PATCHY DENSE FOG LATE IN THE
MORNING. AREAS OF DENSE FOG EARLY IN THE AFTERNOON. WAVES 1 FOOT
OR LESS.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS THROUGH THE DAY. WAVES 1 TO 2 FEET
BUILDING TO 1 TO 3 FEET IN THE LATE MORNING AND AFTERNOON.
THURSDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. MOSTLY CLOUDY. WAVES 1 TO 3 FEET SUBSIDING TO
1 TO 2 FEET IN THE LATE EVENING AND OVERNIGHT.
LSZ144-145-172215-
TWO HARBORS TO DULUTH MN-DULUTH MN TO PORT WING WI-
937 AM CDT WED SEP 17 2025
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING EAST IN THE
AFTERNOON. AREAS OF DENSE FOG LATE IN THE MORNING. WAVES 1 FOOT
OR LESS.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET
IN THE LATE MORNING AND AFTERNOON. A SMALL CRAFT ADVISORY MAY BE
NEEDED.
THURSDAY NIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS IN THE LATE EVENING AND
OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
LSZ146-172215-
PORT WING TO SAND ISLAND WI-
937 AM CDT WED SEP 17 2025
REST OF TODAY
SOUTHWEST WIND 5 KNOTS LATE IN THE MORNING
BECOMING VARIABLE 10 KNOTS OR LESS. AREAS OF DENSE FOG IN THE
LATE MORNING AND EARLY AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. PATCHY DENSE FOG AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 15 TO 20 KNOTS. SLIGHT CHANCE OF RAIN
SHOWERS. WAVES 1 TO 3 FEET.
THURSDAY NIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
LSZ147-172215-
SAND ISLAND TO BAYFIELD WI-
937 AM CDT WED SEP 17 2025
REST OF TODAY
WEST WIND 5 KNOTS BECOMING EAST LATE. PATCHY FOG
LATE IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
THURSDAY NIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN
THE LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
LSZ121-172215-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
937 AM CDT WED SEP 17 2025
REST OF TODAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FEET.
THURSDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY. WAVES
1 TO 2 FEET.
LSZ148-172215-
OAK POINT TO SAXON HARBOR WI-
937 AM CDT WED SEP 17 2025
REST OF TODAY
NORTHWEST WIND 5 KNOTS BECOMING EAST LATE.
PATCHY FOG LATE IN THE MORNING. AREAS OF DENSE FOG IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. AREAS OF DENSE FOG IN THE EVENING. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 15 TO 20 KNOTS. AREAS OF DENSE FOG IN
THE MORNING. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN THE
AFTERNOON.
THURSDAY NIGHT
NORTHEAST WIND 15 TO 20 KNOTS BECOMING EAST
5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE LATE EVENING
AND OVERNIGHT. MOSTLY CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET AFTER MIDNIGHT.
LSZ150-172215-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
937 AM CDT WED SEP 17 2025
REST OF TODAY
WEST WIND 5 KNOTS BECOMING SOUTHEAST LATE.
PATCHY FOG LATE IN THE MORNING. AREAS OF DENSE FOG IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. AREAS OF DENSE FOG IN THE EVENING. WAVES 1 TO 3 FEET.
THURSDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
LATE IN THE AFTERNOON. AREAS OF DENSE FOG IN THE MORNING. WAVES
2 TO 4 FEET.
THURSDAY NIGHT
EAST WIND 15 TO 20 KNOTS EASING TO 5 TO
10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 2 FEET AFTER MIDNIGHT.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
BRITT
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