471
FZUS53 KDLH 072200
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
500 PM CDT FRI AUG 7 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.
LSZ140-080400-
GRAND PORTAGE TO GRAND MARAIS MN-
500 PM CDT FRI AUG 7 2026
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
SATURDAY
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET
IN THE AFTERNOON.
SATURDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 5 TO 10 KNOTS AFTER MIDNIGHT. CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO
2 FEET IN THE LATE EVENING AND OVERNIGHT.
SUNDAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE DAY. WAVES
1 TO 2 FEET.
LSZ141-080400-
GRAND MARAIS TO TACONITE HARBOR MN-
500 PM CDT FRI AUG 7 2026
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE EVENING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
WEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST IN
THE LATE EVENING AND OVERNIGHT. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SUNDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 FOOT OR
LESS.
LSZ142-080400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
500 PM CDT FRI AUG 7 2026
TONIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
SATURDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS TO
AROUND 20 KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST LATE IN
THE EVENING, THEN BECOMING VARIABLE 10 KNOTS OR LESS AFTER
MIDNIGHT. SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING. SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS LIKELY
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
VARIABLE WINDS 10 KNOTS OR LESS. SLIGHT CHANCE OF RAIN
SHOWERS THROUGH THE DAY. WAVES 1 FOOT OR LESS.
LSZ143-080400-
SILVER BAY HARBOR TO TWO HARBORS MN-
500 PM CDT FRI AUG 7 2026
TONIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
SATURDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST WITH GUSTS TO
AROUND 20 KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST LATE IN
THE EVENING, THEN BECOMING VARIABLE 10 KNOTS OR LESS AFTER
MIDNIGHT. SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING. SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING SOUTHEAST
5 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING. SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE DAY. WAVES
1 FOOT OR LESS.
LSZ144-080400-
TWO HARBORS TO DULUTH MN-
500 PM CDT FRI AUG 7 2026
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING. SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING EAST 5 KNOTS.
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. SLIGHT CHANCE OF
RAIN SHOWERS THROUGH THE DAY. WAVES 1 FOOT OR LESS.
LSZ145-080400-
DULUTH MN TO PORT WING WI-
500 PM CDT FRI AUG 7 2026
TONIGHT
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
SATURDAY
WEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT, THEN BECOMING NORTHEAST EARLY IN THE MORNING. SLIGHT
CHANCE OF SHOWERS IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS
THROUGH THE NIGHT. CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT
OR LESS.
SUNDAY
NORTHEAST WIND 5 KNOTS. SLIGHT CHANCE OF THUNDERSTORMS
IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE DAY.
WAVES 1 FOOT OR LESS.
LSZ146-080400-
PORT WING TO SAND ISLAND WI-
500 PM CDT FRI AUG 7 2026
TONIGHT
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS IN THE EVENING. SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTHEAST
5 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING. CHANCE OF RAIN SHOWERS THROUGH THE DAY. WAVES 1 FOOT OR
LESS.
LSZ147-080400-
SAND ISLAND TO BAYFIELD WI-
500 PM CDT FRI AUG 7 2026
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
SATURDAY
WEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN
THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
SOUTHEAST WIND 5 KNOTS BECOMING NORTH LATE IN THE
MORNING, THEN BECOMING VARIABLE 10 KNOTS OR LESS EARLY IN THE
AFTERNOON BECOMING EAST 5 KNOTS LATE IN THE AFTERNOON. SLIGHT
CHANCE OF THUNDERSTORMS IN THE MORNING. CHANCE OF SHOWERS THROUGH
THE DAY. WAVES 1 FOOT OR LESS.
LSZ150-080400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
500 PM CDT FRI AUG 7 2026
TONIGHT
WEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH
EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
SOUTH WIND 5 KNOTS BECOMING NORTH IN THE LATE MORNING
AND EARLY AFTERNOON, THEN BECOMING SOUTHEAST LATE IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
LSZ121-080400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
500 PM CDT FRI AUG 7 2026
TONIGHT
WEST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
WEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY
IN THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTHWEST
5 KNOTS LATE IN THE MORNING, THEN BECOMING NORTH EARLY IN THE
AFTERNOON BECOMING NORTHEAST LATE IN THE AFTERNOON. SLIGHT CHANCE
OF THUNDERSTORMS IN THE MORNING. CHANCE OF RAIN SHOWERS THROUGH
THE DAY. WAVES 1 FOOT OR LESS.
LSZ148-080400-
OAK POINT TO SAXON HARBOR WI-
500 PM CDT FRI AUG 7 2026
...SEVERE THUNDERSTORM WATCH 542 IN EFFECT UNTIL 10 PM CDT THIS
EVENING...
TONIGHT
WEST WIND 5 KNOTS. CHANCE OF THUNDERSTORMS AND SLIGHT
CHANCE OF RAIN SHOWERS EARLY IN THE EVENING. WAVES 1 FOOT OR
LESS.
SATURDAY
WEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING NORTHWEST EARLY
IN THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
EAST WIND 5 KNOTS BECOMING WEST LATE IN THE MORNING,
THEN BECOMING NORTH EARLY IN THE AFTERNOON BECOMING NORTHEAST
LATE IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING. CHANCE OF SHOWERS THROUGH THE DAY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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