508
FZUS53 KDLH 102218
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
518 PM 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.
LSZ140-110400-
GRAND PORTAGE TO GRAND MARAIS MN-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
FRIDAY MORNING...
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY
NIGHT...
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING THEN 20 KNOTS AFTER MIDNIGHT, THEN
INCREASING TO 30 KNOTS LATE IN THE NIGHT. MOSTLY CLEAR. WAVES
1 TO 2 FEET BUILDING TO 1 TO 3 FEET LATE IN THE NIGHT.
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. MOSTLY SUNNY
IN THE MORNING THEN BECOMING MOSTLY CLOUDY. WAVES 4 TO 6 FEET.
WAVES OCCASIONALLY TO 8 FEET. A GALE WARNING MAY BE NEEDED.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 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. SLIGHT
CHANCE OF RAIN SHOWERS IN THE EVENING. CHANCE OF THUNDERSTORMS
THROUGH THE NIGHT. RAIN SHOWERS AFTER MIDNIGHT. WAVES 3 TO
5 FEET. A GALE WARNING MAY BE NEEDED.
SATURDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES
2 TO 4 FEET.
LSZ141-110400-
GRAND MARAIS TO TACONITE HARBOR MN-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
TONIGHT
EAST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
NIGHT. MOSTLY CLEAR. 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. PARTLY SUNNY.
WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTH WIND 10 TO 15 KNOTS BECOMING WEST 5 TO
10 KNOTS EARLY IN THE MORNING. GUSTS UP TO 20 KNOTS. SHOWERS AND
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 2 FEET.
LSZ142-110400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS
TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. 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. PARTLY SUNNY.
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 IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. SUNNY.
WAVES 1 TO 2 FEET.
LSZ143-110400-
SILVER BAY HARBOR TO TWO HARBORS MN-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST WITH
GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. 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
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. SLIGHT CHANCE OF SHOWERS IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. SUNNY. WAVES 1 TO
2 FEET.
LSZ144-110400-
TWO HARBORS TO DULUTH MN-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
TONIGHT
SOUTH WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS LATE IN
THE NIGHT. 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. PARTLY SUNNY.
WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 25 KNOTS BECOMING WEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. CHANCE OF SHOWERS IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. SHOWERS AFTER
MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. SUNNY.
WAVES 1 TO 2 FEET.
LSZ145-110400-
DULUTH MN TO PORT WING WI-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
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 WITH GUSTS TO AROUND
25 KNOTS. PARTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTH 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. CHANCE OF SHOWERS IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. SHOWERS AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. SUNNY. WAVES 1 TO
2 FEET.
LSZ146-110400-
PORT WING TO SAND ISLAND WI-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
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 WITH GUSTS TO AROUND
25 KNOTS. PARTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING WEST WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE
MORNING. SLIGHT CHANCE OF SHOWERS IN THE EVENING. CHANCE OF
THUNDERSTORMS THROUGH THE NIGHT. SHOWERS AFTER MIDNIGHT. WAVES
1 TO 2 FEET.
SATURDAY
WEST WIND 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
RISING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 30 KNOTS IN THE
LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
LSZ147-110400-
SAND ISLAND TO BAYFIELD WI-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
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. MOSTLY 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 20 KNOTS EARLY
IN THE MORNING. SLIGHT CHANCE OF SHOWERS IN THE EVENING. CHANCE
OF THUNDERSTORMS THROUGH THE NIGHT. SHOWERS AFTER MIDNIGHT. WAVES
1 TO 2 FEET.
SATURDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 30 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
LSZ150-110400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS AFTER
MIDNIGHT. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
SOUTH WIND 10 TO 15 KNOTS BECOMING SOUTHWEST
EARLY IN THE MORNING. GUSTS UP TO 25 KNOTS. SLIGHT CHANCE OF
SHOWERS IN THE EVENING. CHANCE OF THUNDERSTORMS THROUGH THE
NIGHT. SHOWERS LIKELY AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE AFTERNOON. SUNNY. WAVES 1 TO
3 FEET.
LSZ121-110400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
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
2 FEET.
FRIDAY NIGHT
SOUTH WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. CHANCE OF SHOWERS IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. SHOWERS AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
RISING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS IN THE
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE
MORNING. WAVES 1 FOOT OR LESS.
LSZ148-110400-
OAK POINT TO SAXON HARBOR WI-
518 PM CDT THU SEP 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT FRIDAY THROUGH
LATE FRIDAY NIGHT...
TONIGHT
SOUTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
LATE IN THE NIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
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. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
RISING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS IN THE
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE
MORNING. WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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