239
FZUS53 KDLH 220246
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
946 PM CDT FRI AUG 21 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.
LSZ140-221000-
GRAND PORTAGE TO GRAND MARAIS MN-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE
EVENING. SLIGHT CHANCE OF RAIN SHOWERS IN THE LATE EVENING AND
EARLY MORNING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE MORNING. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
SUNDAY
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTH WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
LSZ141-221000-
GRAND MARAIS TO TACONITE HARBOR MN-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. CHANCE OF SPRINKLES LATE IN THE EVENING, THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT
OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
SUNDAY
NORTH WIND 5 KNOTS BECOMING SOUTH IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
LSZ142-221000-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. CHANCE OF SPRINKLES IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
SUNDAY
NORTH WIND 5 KNOTS EARLY IN THE MORNING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTHEAST 5 KNOTS IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ143-221000-
SILVER BAY HARBOR TO TWO HARBORS MN-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. CHANCE OF SPRINKLES IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTH WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
SUNDAY
NORTH WIND 5 KNOTS EARLY IN THE MORNING BECOMING
NORTHEAST, THEN BECOMING SOUTHEAST EARLY IN THE AFTERNOON
BECOMING VARIABLE 10 KNOTS OR LESS. SUNNY. WAVES 1 FOOT OR LESS.
LSZ144-221000-
TWO HARBORS TO DULUTH MN-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. CHANCE OF
SPRINKLES LATE IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
SUNDAY
NORTH WIND 5 KNOTS BECOMING EAST IN THE LATE MORNING
AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ145-221000-
DULUTH MN TO PORT WING WI-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
WEST WIND 5 TO 10 KNOTS. CHANCE OF SPRINKLES
IN THE LATE EVENING AND EARLY MORNING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
SUNDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
LSZ146-221000-
PORT WING TO SAND ISLAND WI-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. CHANCE OF SPRINKLES IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTH WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT
OR LESS.
SUNDAY
NORTHEAST WIND 5 KNOTS UNTIL LATE AFTERNOON BECOMING
VARIABLE 10 KNOTS OR LESS. SUNNY. WAVES 1 FOOT OR LESS.
LSZ147-221000-
SAND ISLAND TO BAYFIELD WI-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. CHANCE OF SPRINKLES THROUGH THE NIGHT. WAVES
1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND EARLY AFTERNOON. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
SUNDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ150-221000-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. CHANCE OF SPRINKLES THROUGH THE NIGHT. SLIGHT
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 10 KNOTS RISING TO 10 TO 15 KNOTS IN
THE LATE MORNING AND AFTERNOON. GUSTS UP TO 20 KNOTS. SUNNY.
WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
SUNDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ121-221000-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. CHANCE OF
SPRINKLES THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
SUNDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
LSZ148-221000-
OAK POINT TO SAXON HARBOR WI-
946 PM CDT FRI AUG 21 2026
REST OF TONIGHT
SOUTH WIND 5 KNOTS BECOMING WEST AFTER
MIDNIGHT. CHANCE OF SPRINKLES LATE IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
SUNDAY
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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