436
FZUS53 KDLH 101113
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
613 AM CDT THU SEP 10 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.
LSZ140-101600-
GRAND PORTAGE TO GRAND MARAIS MN-
613 AM CDT THU SEP 10 2026
TODAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. SUNNY.
WAVES 1 TO 2 FEET.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 1 TO 2 FEET
BUILDING TO 2 TO 4 FEET EARLY IN THE MORNING.
FRIDAY
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 35 KNOTS
INCREASING TO 40 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 35 KNOTS LATE IN THE AFTERNOON. PARTLY SUNNY.
WAVES 4 TO 7 FEET. WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING
MAY BE NEEDED.
FRIDAY NIGHT
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO
30 KNOTS INCREASING TO 35 KNOTS IN THE LATE EVENING AND EARLY
MORNING, THEN DECREASING TO 30 KNOTS EARLY IN THE MORNING. RAIN
SHOWERS AND CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. WAVES 4 TO
6 FEET. WAVES OCCASIONALLY TO 8 FEET. A GALE WARNING MAY BE
NEEDED.
LSZ141-101600-
GRAND MARAIS TO TACONITE HARBOR MN-
613 AM CDT THU SEP 10 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
EVENING, THEN BECOMING SOUTHWEST AFTER MIDNIGHT. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 25 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING WEST 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. SHOWERS AND CHANCE OF
THUNDERSTORMS. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
LSZ142-101600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
613 AM CDT THU SEP 10 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTH IN THE LATE MORNING AND
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS TO
AROUND 20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST EARLY
IN THE MORNING. GUSTS UP TO 20 KNOTS. SHOWERS AND CHANCE OF
THUNDERSTORMS. WAVES 1 TO 2 FEET.
LSZ143-101600-
SILVER BAY HARBOR TO TWO HARBORS MN-
613 AM CDT THU SEP 10 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTH IN THE LATE MORNING AND
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. PARTLY
CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS EARLY IN THE AFTERNOON, THEN DECREASING TO
25 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FEET BUILDING TO
1 TO 3 FEET IN THE LATE MORNING AND AFTERNOON.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS BECOMING WEST 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. SHOWERS AND CHANCE OF
THUNDERSTORMS. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET IN THE
LATE EVENING AND EARLY MORNING, THEN SUBSIDING TO 1 TO 2 FEET
EARLY IN THE MORNING.
LSZ144-101600-
TWO HARBORS TO DULUTH MN-
613 AM CDT THU SEP 10 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE MORNING
AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS EARLY
IN THE MORNING. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 25 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 30 KNOTS BECOMING WEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET IN THE
LATE EVENING AND EARLY MORNING, THEN SUBSIDING TO 1 TO 2 FEET
EARLY IN THE MORNING.
LSZ145-101600-
DULUTH MN TO PORT WING WI-
613 AM CDT THU SEP 10 2026
TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS EARLY IN THE AFTERNOON, THEN DECREASING TO
25 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 30 KNOTS BECOMING WEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS. WAVES 1 TO 3 FEET.
LSZ146-101600-
PORT WING TO SAND ISLAND WI-
613 AM CDT THU SEP 10 2026
TODAY
SOUTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 30 KNOTS BECOMING WEST WITH GUSTS TO AROUND 20 KNOTS EARLY
IN THE MORNING. SHOWERS AND CHANCE OF THUNDERSTORMS THROUGH THE
NIGHT. WAVES 1 TO 2 FEET.
LSZ147-101600-
SAND ISLAND TO BAYFIELD WI-
613 AM CDT THU SEP 10 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTH IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS. MOSTLY
CLEAR. WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS EARLY IN THE AFTERNOON, THEN DECREASING TO
25 KNOTS LATE IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 25 KNOTS EARLY
IN THE MORNING. CHANCE OF THUNDERSTORMS IN THE EVENING. SHOWERS
THROUGH THE NIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
LSZ150-101600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
613 AM CDT THU SEP 10 2026
TODAY
WEST WIND 5 TO 10 KNOTS BECOMING SOUTH IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. PARTLY SUNNY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
IN THE LATE MORNING AND AFTERNOON.
FRIDAY NIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 25 KNOTS EARLY
IN THE MORNING. CHANCE OF THUNDERSTORMS IN THE EVENING. SHOWERS
THROUGH THE NIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN THE LATE EVENING AND
OVERNIGHT.
LSZ121-101600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
613 AM CDT THU SEP 10 2026
TODAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO
3 FEET.
FRIDAY NIGHT
SOUTH WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING SOUTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS THROUGH THE NIGHT. WAVES 1 TO 2 FEET.
LSZ148-101600-
OAK POINT TO SAXON HARBOR WI-
613 AM CDT THU SEP 10 2026
TODAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTHEAST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 25 KNOTS EARLY IN THE MORNING. SHOWERS
LIKELY IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE
NIGHT. SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page