249
FZUS53 KDLH 032127
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
427 PM CDT MON AUG 3 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.
LSZ140-040400-
GRAND PORTAGE TO GRAND MARAIS MN-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM CDT TUESDAY THROUGH
TUESDAY MORNING...
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. CHANCE OF RAIN SHOWERS LATE IN THE
NIGHT. WAVES 1 FOOT OR LESS BUILDING TO 3 TO 5 FEET AFTER
MIDNIGHT.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING. WAVES 3 TO 5 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 2 FEET IN THE LATE EVENING AND OVERNIGHT.
WEDNESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
LSZ141-040400-
GRAND MARAIS TO TACONITE HARBOR MN-
427 PM CDT MON AUG 3 2026
TONIGHT
EAST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS TO
AROUND 20 KNOTS LATE IN THE NIGHT. CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. RAIN
SHOWERS LIKELY LATE IN THE NIGHT. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS TO
AROUND 20 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
LSZ142-040400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
427 PM CDT MON AUG 3 2026
TONIGHT
NORTHEAST WIND 5 KNOTS BECOMING SOUTH AFTER MIDNIGHT,
THEN BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN THE
NIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. RAIN
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE
NIGHT. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS TO
AROUND 20 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
LSZ143-040400-
SILVER BAY HARBOR TO TWO HARBORS MN-
427 PM CDT MON AUG 3 2026
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT, THEN
BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN THE
NIGHT. CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. RAIN SHOWERS LIKELY LATE IN THE
NIGHT. WAVES 1 TO 3 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ144-040400-
TWO HARBORS TO DULUTH MN-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING WEST 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS LATE IN THE NIGHT. CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 2 FEET
BUILDING TO 2 TO 4 FEET AFTER MIDNIGHT.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ145-040400-
DULUTH MN TO PORT WING WI-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO 15 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND EARLY
MORNING, THEN BECOMING SOUTHWEST WITH GUSTS TO AROUND 25 KNOTS
LATE IN THE NIGHT. CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. CHANCE
OF SHOWERS AFTER MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS LATE IN
THE NIGHT. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. CHANCE OF RAIN SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES 1 TO
2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
LSZ146-040400-
PORT WING TO SAND ISLAND WI-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO 15 KNOTS
WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND EARLY
MORNING, THEN BECOMING SOUTHWEST WITH GUSTS TO AROUND 25 KNOTS
LATE IN THE NIGHT. CHANCE OF SHOWERS AFTER MIDNIGHT. SLIGHT
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. SHOWERS LIKELY LATE IN
THE NIGHT. WAVES 1 TO 3 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING THEN 20 KNOTS IN THE AFTERNOON. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES
1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
LSZ147-040400-
SAND ISLAND TO BAYFIELD WI-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST WITH
GUSTS TO AROUND 20 KNOTS LATE IN THE NIGHT. SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. SHOWERS LIKELY LATE IN THE NIGHT. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ150-040400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 25 KNOTS LATE IN THE NIGHT. SLIGHT
CHANCE OF SHOWERS AFTER MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. CHANCE OF SHOWERS LATE IN THE NIGHT. WAVES 1 TO
2 FEET.
TUESDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ121-040400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS AFTER
MIDNIGHT. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
LATE IN THE NIGHT. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
IN THE MORNING. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ148-040400-
OAK POINT TO SAXON HARBOR WI-
427 PM CDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS WITH GUSTS TO AROUND 25 KNOTS IN THE LATE EVENING AND
OVERNIGHT. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
LATE IN THE NIGHT. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING WEST 5 TO 10 KNOTS LATE IN THE AFTERNOON. CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES
1 TO 2 FEET.
TUESDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS BECOMING EAST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page