425
FZUS53 KDLH 171601
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1100 AM CDT THU SEP 17 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.
LSZ140-172200-
GRAND PORTAGE TO GRAND MARAIS MN-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING.
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES
1 TO 2 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY SUNNY. WAVES
1 TO 3 FEET.
FRIDAY NIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
LSZ141-172200-
GRAND MARAIS TO TACONITE HARBOR MN-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
WEST WIND 5 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTHWEST WIND 5 KNOTS BECOMING NORTH IN THE LATE
EVENING AND EARLY MORNING, THEN BECOMING NORTHEAST 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY
IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO
3 FEET.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
1 TO 3 FEET.
LSZ142-172200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. PARTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. PARTLY
CLOUDY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 TO
2 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS THROUGH
THE NIGHT. WAVES 1 TO 3 FEET.
LSZ143-172200-
SILVER BAY HARBOR TO TWO HARBORS MN-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
SOUTHWEST 5 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING.
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES
1 TO 2 FEET.
FRIDAY
EAST WIND 10 TO 15 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.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE IN THE EVENING, THEN THEN
20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING, THEN CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
1 TO 3 FEET.
LSZ144-172200-
TWO HARBORS TO DULUTH MN-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING WEST LATE.
PARTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING.
MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE AFTERNOON. CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS IN THE LATE EVENING AND
OVERNIGHT. CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET.
LSZ145-172200-
DULUTH MN TO PORT WING WI-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST LATE.
PARTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
3 FEET.
FRIDAY NIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET.
LSZ146-172200-
PORT WING TO SAND ISLAND WI-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING THEN 20 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FEET.
LSZ147-172200-
SAND ISLAND TO BAYFIELD WI-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY
CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING THEN 20 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO
2 FEET.
LSZ150-172200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
WEST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. MOSTLY
CLOUDY. WAVES 1 TO 3 FEET.
FRIDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
3 FEET.
FRIDAY NIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO
3 FEET.
LSZ121-172200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH
5 KNOTS EARLY IN THE AFTERNOON, THEN BECOMING NORTHEAST LATE.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES
1 FOOT OR LESS.
FRIDAY
EAST WIND 5 TO 10 KNOTS. CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
EAST WIND 5 TO 10 KNOTS. CHANCE OF RAIN SHOWERS.
WAVES 1 FOOT OR LESS.
LSZ148-172200-
OAK POINT TO SAXON HARBOR WI-
1100 AM CDT THU SEP 17 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH
5 KNOTS EARLY IN THE AFTERNOON, THEN BECOMING NORTHEAST LATE.
PARTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES
1 TO 2 FEET.
FRIDAY
EAST WIND 5 TO 10 KNOTS. CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
EAST WIND 5 TO 10 KNOTS. CHANCE OF RAIN SHOWERS.
WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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