917
FZUS53 KDLH 182200
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
500 PM 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.
LSZ140-190400-
GRAND PORTAGE TO GRAND MARAIS MN-
500 PM CDT FRI SEP 18 2026
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. PARTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS BECOMING NORTH LATE IN
THE EVENING, THEN RISING TO 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
SUNDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING EAST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET IN THE LATE MORNING AND AFTERNOON.
LSZ141-190400-
GRAND MARAIS TO TACONITE HARBOR MN-
500 PM CDT FRI SEP 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 5 KNOTS LATE IN THE NIGHT. MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
SATURDAY
EAST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
SUNDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING EAST WITH GUSTS TO AROUND 25 KNOTS IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET IN THE AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ142-190400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
500 PM CDT FRI SEP 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH
5 TO 10 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
SUNDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING EAST WITH GUSTS TO AROUND 25 KNOTS IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS BUILDING TO 3 TO
5 FEET IN THE LATE MORNING AND AFTERNOON. A SMALL CRAFT ADVISORY
MAY BE NEEDED.
LSZ143-190400-
SILVER BAY HARBOR TO TWO HARBORS MN-
500 PM CDT FRI SEP 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
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 LATE IN
THE NIGHT.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND 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.
SUNDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING EAST WITH GUSTS TO AROUND 30 KNOTS LATE IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET BUILDING TO 4 TO
6 FEET IN THE LATE MORNING AND AFTERNOON. WAVES OCCASIONALLY TO
7 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ144-190400-
TWO HARBORS TO DULUTH MN-
500 PM CDT FRI SEP 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS AND DRIZZLE EARLY IN THE EVENING.
SLIGHT CHANCE OF DRIZZLE AFTER MIDNIGHT. PATCHY FOG AFTER
MIDNIGHT. 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 LATE MORNING AND AFTERNOON. PATCHY FOG IN THE MORNING.
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.
SUNDAY
NORTHEAST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY
SUNNY. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
LSZ145-190400-
DULUTH MN TO PORT WING WI-
500 PM CDT FRI SEP 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE EVENING. CHANCE OF RAIN SHOWERS EARLY IN THE EVENING. SLIGHT
CHANCE OF DRIZZLE UNTIL EARLY MORNING. PATCHY FOG AFTER MIDNIGHT.
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 LATE MORNING AND AFTERNOON. PATCHY FOG IN THE MORNING.
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.
SUNDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY
SUNNY. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
LSZ146-190400-
PORT WING TO SAND ISLAND WI-
500 PM CDT FRI SEP 18 2026
TONIGHT
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE EVENING. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING. WAVES
1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
SUNDAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY
SUNNY. WAVES 1 TO 3 FEET BUILDING TO 4 TO 6 FEET IN THE LATE
MORNING AND AFTERNOON. WAVES OCCASIONALLY TO 8 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
LSZ147-190400-
SAND ISLAND TO BAYFIELD WI-
500 PM CDT FRI SEP 18 2026
TONIGHT
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE EVENING. SLIGHT CHANCE OF DRIZZLE LATE IN THE EVENING. WAVES
1 TO 3 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES 1 FOOT
OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS RISING TO 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
SUNDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. PARTLY SUNNY. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO
8 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ150-190400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
500 PM CDT FRI SEP 18 2026
TONIGHT
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST LATE IN
THE AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
SUNDAY
NORTHEAST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES 2 TO
4 FEET BUILDING TO 4 TO 7 FEET IN THE LATE MORNING AND AFTERNOON.
WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING MAY BE NEEDED.
LSZ121-190400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
500 PM CDT FRI SEP 18 2026
TONIGHT
EAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF DRIZZLE LATE
IN THE EVENING. SLIGHT CHANCE OF DRIZZLE LATE IN THE NIGHT.
PATCHY FOG AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS RISING TO 5 TO 10 KNOTS
AFTER MIDNIGHT. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
SUNDAY
NORTHEAST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO
3 FEET BUILDING TO 4 TO 7 FEET IN THE LATE MORNING AND AFTERNOON.
WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING MAY BE NEEDED.
LSZ148-190400-
OAK POINT TO SAXON HARBOR WI-
500 PM CDT FRI SEP 18 2026
TONIGHT
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 TO
3 FEET.
SATURDAY
EAST WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
SUNDAY
NORTHEAST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO
3 FEET BUILDING TO 4 TO 7 FEET IN THE LATE MORNING AND AFTERNOON.
WAVES OCCASIONALLY TO 9 FEET. A GALE WARNING MAY BE NEEDED.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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