929
FZUS53 KDLH 181628
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1128 AM CDT MON MAY 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.
LSZ140-182200-
GRAND PORTAGE TO GRAND MARAIS MN-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS LATE IN THE EVENING, THEN INCREASING TO
30 KNOTS AFTER MIDNIGHT DECREASING TO 25 KNOTS EARLY IN THE
MORNING. SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING. SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS AFTER
MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 4 TO 6 FEET IN THE LATE
EVENING AND OVERNIGHT. WAVES OCCASIONALLY TO 8 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 4 TO
6 FEET SUBSIDING TO 1 TO 2 FEET. WAVES OCCASIONALLY TO 8 FEET. A
SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
NORTHWEST 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 2 FEET.
LSZ141-182200-
GRAND MARAIS TO TACONITE HARBOR MN-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING EAST EARLY IN
THE AFTERNOON, THEN BECOMING NORTHEAST LATE. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN
THE LATE EVENING AND EARLY MORNING DECREASING TO 20 KNOTS. CHANCE
OF RAIN SHOWERS IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS
THROUGH THE NIGHT. RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET AFTER MIDNIGHT.
TUESDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING. CHANCE OF
SPRINKLES IN THE AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET IN THE AFTERNOON.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ142-182200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
SOUTH WIND 5 KNOTS BECOMING EAST EARLY IN THE
AFTERNOON, THEN BECOMING NORTHEAST LATE. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS AFTER MIDNIGHT. CHANCE OF RAIN SHOWERS IN
THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE NIGHT.
RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO 2 TO
4 FEET AFTER MIDNIGHT. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING. CHANCE OF
SPRINKLES IN THE AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET LATE IN THE AFTERNOON. A SMALL CRAFT ADVISORY MAY BE
NEEDED.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ143-182200-
SILVER BAY HARBOR TO TWO HARBORS MN-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTHEAST EARLY
IN THE AFTERNOON, THEN BECOMING NORTHEAST LATE. MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE EVENING INCREASING TO 25 KNOTS, THEN DECREASING TO
20 KNOTS EARLY IN THE MORNING. CHANCE OF RAIN SHOWERS IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET AFTER
MIDNIGHT. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING. CHANCE OF
SPRINKLES IN THE AFTERNOON. WAVES 2 TO 4 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN
THE EVENING THEN CLEARING. WAVES 1 TO 2 FEET.
LSZ144-182200-
TWO HARBORS TO DULUTH MN-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTHEAST EARLY
IN THE AFTERNOON, THEN BECOMING NORTHEAST LATE. MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS AFTER MIDNIGHT, THEN DECREASING TO
20 KNOTS EARLY IN THE MORNING. RAIN SHOWERS LIKELY IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET IN THE
LATE EVENING AND OVERNIGHT. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF RAIN SHOWERS IN THE
MORNING. WAVES 2 TO 4 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS EASING TO 5 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY
IN THE EVENING THEN CLEARING. WAVES 1 TO 2 FEET.
LSZ145-182200-
DULUTH MN TO PORT WING WI-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
SOUTH WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE EVENING INCREASING TO 25 KNOTS, THEN DECREASING TO
20 KNOTS EARLY IN THE MORNING. RAIN SHOWERS LIKELY IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET IN THE
LATE EVENING AND OVERNIGHT. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF RAIN SHOWERS IN THE
MORNING. WAVES 2 TO 4 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING WEST 5 KNOTS AFTER MIDNIGHT. MOSTLY
CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 TO
3 FEET.
LSZ146-182200-
PORT WING TO SAND ISLAND WI-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
NORTHEAST 5 TO 10 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS EASING TO 10 KNOTS EARLY
IN THE MORNING. GUSTS UP TO 20 KNOTS LATE IN THE EVENING
INCREASING TO 25 KNOTS, THEN DECREASING TO 20 KNOTS EARLY IN THE
MORNING. RAIN SHOWERS LIKELY IN THE EVENING. CHANCE OF
THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS AFTER MIDNIGHT.
WAVES 1 TO 2 FEET BUILDING TO 3 TO 5 FEET AFTER MIDNIGHT. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST WITH GUSTS
TO AROUND 20 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE OF
RAIN SHOWERS IN THE MORNING. CHANCE OF SPRINKLES IN THE
AFTERNOON. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET LATE IN THE
AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN THE
EVENING THEN CLEARING. WAVES 1 TO 2 FEET.
LSZ147-182200-
SAND ISLAND TO BAYFIELD WI-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN
THE LATE EVENING AND EARLY MORNING DECREASING TO 20 KNOTS. RAIN
SHOWERS LIKELY IN THE EVENING. CHANCE OF THUNDERSTORMS THROUGH
THE NIGHT. RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET AFTER MIDNIGHT. A SMALL CRAFT ADVISORY
MAY BE NEEDED.
TUESDAY
NORTH WIND 5 TO 10 KNOTS BECOMING WEST WITH GUSTS TO
AROUND 20 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE OF RAIN
SHOWERS IN THE MORNING. CHANCE OF SPRINKLES IN THE AFTERNOON.
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET LATE IN THE AFTERNOON.
A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ150-182200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS LATE IN THE EVENING, THEN INCREASING TO
30 KNOTS AFTER MIDNIGHT DECREASING TO 25 KNOTS EARLY IN THE
MORNING. CHANCE OF RAIN SHOWERS IN THE EVENING. CHANCE OF
THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS AFTER MIDNIGHT.
WAVES 1 TO 3 FEET BUILDING TO 5 TO 8 FEET. WAVES OCCASIONALLY TO
10 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING WEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF RAIN SHOWERS IN THE
MORNING. CHANCE OF SPRINKLES IN THE AFTERNOON. WAVES 4 TO 7 FEET
SUBSIDING TO 2 TO 4 FEET LATE IN THE AFTERNOON. WAVES
OCCASIONALLY TO 9 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 TO 3 FEET.
LSZ121-182200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE EVENING AND OVERNIGHT. RAIN SHOWERS LIKELY IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 4 TO 7 FEET. WAVES
OCCASIONALLY TO 10 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE LATE MORNING AND
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING. CHANCE OF
SPRINKLES IN THE AFTERNOON. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ148-182200-
OAK POINT TO SAXON HARBOR WI-
1128 AM CDT MON MAY 18 2026
REST OF TODAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE.
MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN
THE LATE EVENING AND EARLY MORNING DECREASING TO 20 KNOTS. RAIN
SHOWERS LIKELY IN THE EVENING. CHANCE OF THUNDERSTORMS THROUGH
THE NIGHT. RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 3 FEET
BUILDING TO 5 TO 8 FEET. WAVES OCCASIONALLY TO 10 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. CHANCE
OF RAIN SHOWERS IN THE MORNING. CHANCE OF SPRINKLES IN THE
AFTERNOON. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET. A
SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO
2 FEET IN THE LATE EVENING AND OVERNIGHT.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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