401
FZUS53 KDLH 231137
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
637 AM CDT FRI OCT 23 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.
LSZ140-231600-
GRAND PORTAGE TO GRAND MARAIS MN-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST IN THE
LATE MORNING AND AFTERNOON. PATCHY FOG. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. PATCHY FOG
IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES 1 TO 3 FEET.
SATURDAY
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 3 TO 5 FEET. A SMALL CRAFT ADVISORY MAY BE
NEEDED.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING WEST 10 TO 15 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 2 FEET EARLY IN THE MORNING. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
LSZ141-231600-
GRAND MARAIS TO TACONITE HARBOR MN-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
EAST WIND 5 KNOTS. AREAS OF FOG EARLY IN THE MORNING,
THEN PATCHY FOG IN THE LATE MORNING AND AFTERNOON. WAVES 1 FOOT
OR LESS.
TONIGHT
EAST WIND 5 TO 10 KNOTS. PATCHY FOG IN THE EVENING.
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS LATE IN THE AFTERNOON.
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET
BUILDING TO 1 TO 3 FEET IN THE LATE MORNING AND AFTERNOON.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 TO 10 KNOTS AFTER MIDNIGHT. CHANCE OF RAIN
SHOWERS IN THE EVENING. WAVES 1 TO 3 FEET.
LSZ142-231600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG IN THE
MORNING, THEN PATCHY FOG IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG IN THE
EVENING, THEN PATCHY FOG AFTER MIDNIGHT. CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
EAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO 15 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE MORNING AND AFTERNOON.
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET
BUILDING TO 1 TO 3 FEET IN THE AFTERNOON.
SATURDAY NIGHT
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING.
WAVES 1 TO 2 FEET.
LSZ143-231600-
SILVER BAY HARBOR TO TWO HARBORS MN-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG UNTIL LATE
AFTERNOON, THEN PATCHY FOG LATE IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG IN THE
EVENING. SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING, THEN
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
SOUTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 25 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET IN THE LATE
MORNING AND AFTERNOON.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 KNOTS EARLY IN THE MORNING. CHANCE OF RAIN
SHOWERS IN THE EVENING. WAVES 1 TO 2 FEET.
LSZ144-231600-
TWO HARBORS TO DULUTH MN-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG UNTIL LATE
AFTERNOON, THEN PATCHY FOG LATE IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
TONIGHT
EAST WIND 10 TO 15 KNOTS BECOMING SOUTHEAST WITH GUSTS
TO AROUND 20 KNOTS EARLY IN THE MORNING. PATCHY FOG IN THE
EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING, THEN SLIGHT
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 25 KNOTS IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
3 FEET.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING.
WAVES 1 TO 2 FEET.
LSZ145-231600-
DULUTH MN TO PORT WING WI-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG IN THE
MORNING, THEN PATCHY FOG IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. PATCHY FOG
IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE NIGHT.
WAVES 1 TO 2 FEET.
SATURDAY
SOUTH WIND 15 TO 20 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS LATE IN THE AFTERNOON. GUSTS UP TO 25 KNOTS. CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FEET.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING.
WAVES 1 TO 2 FEET.
LSZ146-231600-
PORT WING TO SAND ISLAND WI-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG IN THE
MORNING, THEN PATCHY FOG IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO 15 KNOTS
WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. PATCHY FOG IN THE
EVENING. SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE NIGHT. WAVES
1 TO 2 FEET.
SATURDAY
SOUTH WIND 15 TO 20 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS LATE IN THE AFTERNOON. GUSTS UP TO 25 KNOTS. CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FEET.
SATURDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING WEST 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. CHANCE OF RAIN
SHOWERS IN THE EVENING. WAVES 1 TO 2 FEET.
LSZ147-231600-
SAND ISLAND TO BAYFIELD WI-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
EAST WIND 5 KNOTS BECOMING SOUTHEAST IN THE LATE MORNING
AND EARLY AFTERNOON, THEN BECOMING EAST LATE IN THE AFTERNOON.
AREAS OF FOG IN THE MORNING, THEN PATCHY FOG IN THE AFTERNOON.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH WITH GUSTS
TO AROUND 20 KNOTS AFTER MIDNIGHT. PATCHY FOG IN THE EVENING.
SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS.
SATURDAY
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN
THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
WAVES 1 TO 2 FEET.
SATURDAY NIGHT
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 1 TO
2 FEET.
LSZ150-231600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST IN THE LATE
MORNING AND EARLY AFTERNOON, THEN BECOMING EAST LATE IN THE
AFTERNOON. AREAS OF FOG IN THE MORNING, THEN PATCHY FOG IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. PATCHY FOG
IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
SATURDAY
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN
THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET IN THE LATE MORNING AND
AFTERNOON.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 TO 10 KNOTS AFTER MIDNIGHT. CHANCE OF RAIN
SHOWERS IN THE EVENING. WAVES 1 TO 2 FEET.
LSZ121-231600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS. AREAS OF FOG IN THE
MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS RISING TO 10 TO 15 KNOTS WITH
GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF RAIN
SHOWERS. WAVES 1 FOOT OR LESS.
SATURDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST 5 TO 10 KNOTS AFTER MIDNIGHT. CHANCE OF
RAIN SHOWERS IN THE EVENING. WAVES 1 FOOT OR LESS.
LSZ148-231600-
OAK POINT TO SAXON HARBOR WI-
637 AM CDT FRI OCT 23 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
EAST WIND 5 KNOTS BECOMING SOUTH IN THE LATE MORNING AND
EARLY AFTERNOON, THEN BECOMING SOUTHEAST LATE IN THE AFTERNOON.
AREAS OF FOG EARLY IN THE MORNING, THEN PATCHY FOG IN THE LATE
MORNING AND EARLY AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS.
SATURDAY
SOUTH 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. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
SATURDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING WEST AFTER MIDNIGHT. CHANCE OF RAIN
SHOWERS IN THE EVENING. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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