447
FZUS53 KDLH 180906
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
406 AM CDT FRI SEP 18 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.
LSZ140-181600-
GRAND PORTAGE TO GRAND MARAIS MN-
406 AM CDT FRI SEP 18 2026
TODAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY
IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
EAST WIND 5 KNOTS BECOMING SOUTHEAST IN THE LATE
MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH 10 TO 15 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND OVERNIGHT.
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ141-181600-
GRAND MARAIS TO TACONITE HARBOR MN-
406 AM CDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...
TODAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING EAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ142-181600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
406 AM CDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...
TODAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ143-181600-
SILVER BAY HARBOR TO TWO HARBORS MN-
406 AM CDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...
TODAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. CLOUDY. WAVES 1 TO
3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY CLOUDY. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET EARLY
IN THE MORNING.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
LSZ144-181600-
TWO HARBORS TO DULUTH MN-
406 AM CDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...
TODAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET IN THE AFTERNOON.
TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 5 TO 10 KNOTS EARLY IN THE MORNING. MOSTLY
CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ145-181600-
DULUTH MN TO PORT WING WI-
406 AM CDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...
TODAY
NORTHEAST WIND 15 TO 20 KNOTS. SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET BUILDING TO 2 TO
4 FEET IN THE AFTERNOON.
TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS BECOMING EAST 5 TO
10 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ146-181600-
PORT WING TO SAND ISLAND WI-
406 AM CDT FRI SEP 18 2026
TODAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
AFTERNOON. CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY
IN THE EVENING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ147-181600-
SAND ISLAND TO BAYFIELD WI-
406 AM CDT FRI SEP 18 2026
TODAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING THEN 20 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
TONIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHEAST 5 TO 10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST
5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT.
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ150-181600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
406 AM CDT FRI SEP 18 2026
TODAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHEAST 5 TO 10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS RISING TO 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
LSZ121-181600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
406 AM CDT FRI SEP 18 2026
TODAY
EAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 TO 10 KNOTS EASING TO 5 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ148-181600-
OAK POINT TO SAXON HARBOR WI-
406 AM CDT FRI SEP 18 2026
TODAY
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 TO
2 FEET.
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 1 TO 2 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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