494
FZUS53 KDLH 252001
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
301 PM CDT TUE AUG 25 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.
LSZ140-260400-
GRAND PORTAGE TO GRAND MARAIS MN-
301 PM CDT TUE AUG 25 2026
TONIGHT
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST LATE IN THE
EVENING, THEN BECOMING WEST AFTER MIDNIGHT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE AFTERNOON. PATCHY FOG IN THE MORNING. SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING THEN 20 KNOTS AFTER MIDNIGHT.
PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 TO 10 KNOTS BECOMING EAST IN THE
AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
LSZ141-260400-
GRAND MARAIS TO TACONITE HARBOR MN-
301 PM CDT TUE AUG 25 2026
TONIGHT
NORTHEAST WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT.
RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE LATE MORNING AND AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST EARLY IN
THE AFTERNOON, THEN BECOMING NORTHWEST LATE IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
LSZ142-260400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
301 PM CDT TUE AUG 25 2026
TONIGHT
NORTHEAST WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT.
RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.
PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE LATE MORNING AND AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST EARLY IN
THE AFTERNOON, THEN BECOMING NORTHEAST LATE IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
LSZ143-260400-
SILVER BAY HARBOR TO TWO HARBORS MN-
301 PM CDT TUE AUG 25 2026
TONIGHT
NORTHEAST WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT.
RAIN SHOWERS LIKELY EARLY IN THE EVENING. CHANCE OF THUNDERSTORMS
IN THE EVENING. CHANCE OF RAIN SHOWERS LATE IN THE EVENING.
PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING EAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
LSZ144-260400-
TWO HARBORS TO DULUTH MN-
301 PM CDT TUE AUG 25 2026
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN
THE EVENING, THEN BECOMING WEST AFTER MIDNIGHT. CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTH IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ145-260400-
DULUTH MN TO PORT WING WI-
301 PM CDT TUE AUG 25 2026
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS BECOMING WEST AFTER
MIDNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING.
WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTH IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ146-260400-
PORT WING TO SAND ISLAND WI-
301 PM CDT TUE AUG 25 2026
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN
THE EVENING, THEN BECOMING WEST WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
WEST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES 1 TO
2 FEET.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ147-260400-
SAND ISLAND TO BAYFIELD WI-
301 PM CDT TUE AUG 25 2026
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING WEST WITH GUSTS
TO AROUND 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. CHANCE OF
SHOWERS AND THUNDERSTORMS UNTIL EARLY MORNING. PATCHY FOG AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
WEST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS IN
THE AFTERNOON. GUSTS UP TO 20 KNOTS. MOSTLY SUNNY. WAVES 1 TO
2 FEET.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST EARLY IN
THE AFTERNOON, THEN BECOMING EAST LATE IN THE AFTERNOON. SUNNY.
WAVES 1 FOOT OR LESS.
LSZ150-260400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
301 PM CDT TUE AUG 25 2026
TONIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING WEST WITH GUSTS
TO AROUND 20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF SHOWERS
AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS UNTIL
LATE AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 TO 2 FEET.
THURSDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING EAST EARLY IN
THE AFTERNOON, THEN BECOMING SOUTHEAST LATE IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
LSZ121-260400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
301 PM CDT TUE AUG 25 2026
TONIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN THE
LATE EVENING AND OVERNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS
UNTIL EARLY MORNING. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN
THE AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ148-260400-
OAK POINT TO SAXON HARBOR WI-
301 PM CDT TUE AUG 25 2026
TONIGHT
SOUTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS IN THE LATE
EVENING AND OVERNIGHT. SHOWERS LIKELY IN THE EVENING. CHANCE OF
THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF SHOWERS AFTER
MIDNIGHT. PATCHY FOG LATE IN THE NIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS UNTIL
LATE AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST 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