317
FZUS53 KDLH 301507
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1007 AM CDT THU JUL 30 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.
LSZ140-302215-
GRAND PORTAGE TO GRAND MARAIS MN-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS INCREASING TO 25 KNOTS IN THE AFTERNOON. CHANCE OF RAIN
SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE AFTERNOON, THEN CHANCE OF THUNDERSTORMS LATE. WAVES 1 TO
2 FEET BUILDING TO 1 TO 3 FEET IN THE AFTERNOON.
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTH 5 TO 10 KNOTS AFTER MIDNIGHT, THEN BECOMING SOUTH
EARLY IN THE MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE
EVENING AND OVERNIGHT.
FRIDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 FOOT OR
LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH AFTER
MIDNIGHT. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ141-302215-
GRAND MARAIS TO TACONITE HARBOR MN-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTH WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE AFTERNOON. CHANCE OF RAIN SHOWERS THROUGH THE DAY. CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST LATE IN THE
EVENING, THEN BECOMING NORTHWEST AFTER MIDNIGHT BECOMING WEST
EARLY IN THE MORNING. CHANCE OF THUNDERSTORMS IN THE EVENING.
CHANCE OF RAIN SHOWERS THROUGH THE NIGHT. SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHWEST WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 FOOT OR
LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE
MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ142-302215-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTH WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS LATE IN THE
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING WEST LATE IN THE EVENING,
THEN BECOMING VARIABLE 10 KNOTS OR LESS AFTER MIDNIGHT BECOMING
WEST 5 KNOTS EARLY IN THE MORNING. CHANCE OF THUNDERSTORMS IN THE
EVENING. CHANCE OF RAIN SHOWERS THROUGH THE NIGHT. SLIGHT CHANCE
OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
VARIABLE WINDS 10 KNOTS OR LESS. SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST
5 KNOTS LATE IN THE EVENING, THEN BECOMING NORTH AFTER MIDNIGHT.
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ143-302215-
SILVER BAY HARBOR TO TWO HARBORS MN-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING SOUTH WITH GUSTS TO AROUND 20 KNOTS
LATE. SLIGHT CHANCE OF RAIN SHOWERS IN THE LATE MORNING AND EARLY
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE AFTERNOON,
THEN CHANCE OF SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR
LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING WEST 5 KNOTS AFTER
MIDNIGHT. CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN
SHOWERS THROUGH THE NIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
VARIABLE WINDS 10 KNOTS OR LESS. SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
NORTHWEST 5 KNOTS AFTER MIDNIGHT, THEN BECOMING VARIABLE 10 KNOTS
OR LESS EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ144-302215-
TWO HARBORS TO DULUTH MN-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS LATE IN
THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT.
CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF SHOWERS THROUGH
THE NIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
MORNING AND AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ145-302215-
DULUTH MN TO PORT WING WI-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS LATE IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER MIDNIGHT.
CHANCE OF SHOWERS IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS
THROUGH THE NIGHT. SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
FRIDAY
SOUTHEAST WIND 5 KNOTS BECOMING WEST IN THE LATE
MORNING AND AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. MOSTLY CLOUDY IN THE EVENING THEN CLEARING. WAVES 1 FOOT
OR LESS.
LSZ146-302215-
PORT WING TO SAND ISLAND WI-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING SOUTH WITH GUSTS TO AROUND 20 KNOTS
LATE. SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER MIDNIGHT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT
OR LESS.
FRIDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST 5 KNOTS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
LSZ147-302215-
SAND ISLAND TO BAYFIELD WI-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING SOUTHEAST WITH GUSTS TO AROUND 20 KNOTS
LATE. SLIGHT CHANCE OF SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF
THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
1 FOOT OR LESS.
FRIDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST 5 KNOTS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
NORTHWEST 5 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ150-302215-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS BECOMING SOUTHEAST
5 TO 10 KNOTS LATE. GUSTS UP TO 20 KNOTS. SLIGHT CHANCE OF
SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY
IN THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ121-302215-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST
LATE. SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
EVENING AND OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. SLIGHT
CHANCE OF SHOWERS THROUGH THE DAY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING WEST 5 KNOTS
AFTER MIDNIGHT BECOMING VARIABLE 10 KNOTS OR LESS. MOSTLY CLOUDY
IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ148-302215-
OAK POINT TO SAXON HARBOR WI-
1007 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST
LATE. SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING. WAVES 1 FOOT
OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
EVENING AND OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
AFTERNOON, THEN BECOMING SOUTH LATE IN THE AFTERNOON. SLIGHT
CHANCE OF THUNDERSTORMS IN THE MORNING. SLIGHT CHANCE OF SHOWERS
THROUGH THE DAY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING WEST 5 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
JDS
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