462
FZUS53 KDLH 210622
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
122 AM 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.
LSZ140-211600-
GRAND PORTAGE TO GRAND MARAIS MN-
122 AM CDT FRI AUG 21 2026
TODAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST LATE IN
THE AFTERNOON. PATCHY FOG EARLY IN THE AFTERNOON. SLIGHT CHANCE
OF RAIN SHOWERS LATE IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST WITH
GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
IN THE MORNING. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
IN THE LATE EVENING AND OVERNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
LSZ141-211600-
GRAND MARAIS TO TACONITE HARBOR MN-
122 AM CDT FRI AUG 21 2026
TODAY
NORTHEAST WIND 5 KNOTS BECOMING WEST IN THE AFTERNOON.
PATCHY DENSE FOG IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING THEN 20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
LSZ142-211600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
122 AM CDT FRI AUG 21 2026
TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH 5 KNOTS
LATE IN THE MORNING, THEN BECOMING WEST EARLY IN THE AFTERNOON
BECOMING SOUTHWEST LATE IN THE AFTERNOON. PATCHY FOG EARLY IN THE
MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST IN THE LATE
EVENING AND OVERNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
LSZ143-211600-
SILVER BAY HARBOR TO TWO HARBORS MN-
122 AM CDT FRI AUG 21 2026
TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTHWEST
5 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON, THEN BECOMING
SOUTHWEST LATE IN THE AFTERNOON. PATCHY FOG IN THE MORNING. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST IN THE LATE
EVENING AND OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
LSZ144-211600-
TWO HARBORS TO DULUTH MN-
122 AM CDT FRI AUG 21 2026
TODAY
NORTH WIND 5 KNOTS BECOMING WEST LATE IN THE AFTERNOON.
PATCHY FOG IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST AFTER MIDNIGHT.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES
1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
LSZ145-211600-
DULUTH MN TO PORT WING WI-
122 AM CDT FRI AUG 21 2026
TODAY
NORTHEAST WIND 5 KNOTS BECOMING WEST LATE IN THE
AFTERNOON. PATCHY FOG UNTIL LATE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
LSZ146-211600-
PORT WING TO SAND ISLAND WI-
122 AM CDT FRI AUG 21 2026
TODAY
NORTH WIND 5 KNOTS BECOMING WEST LATE IN THE AFTERNOON.
PATCHY FOG UNTIL LATE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST AFTER MIDNIGHT.
MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
LSZ147-211600-
SAND ISLAND TO BAYFIELD WI-
122 AM CDT FRI AUG 21 2026
TODAY
NORTHWEST WIND 5 KNOTS. PATCHY FOG UNTIL LATE AFTERNOON.
WAVES 1 FOOT OR LESS.
TONIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST 5 KNOTS
IN THE LATE EVENING AND EARLY MORNING, THEN BECOMING NORTHWEST
EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN
THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
LSZ150-211600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
122 AM CDT FRI AUG 21 2026
TODAY
NORTHWEST WIND 5 KNOTS. PATCHY FOG THROUGH THE DAY.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE MORNING. SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH
AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
LSZ121-211600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
122 AM CDT FRI AUG 21 2026
TODAY
WEST WIND 5 KNOTS BECOMING NORTH IN THE AFTERNOON.
PATCHY FOG IN THE MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST 5 KNOTS
LATE IN THE EVENING, THEN BECOMING NORTHWEST AFTER MIDNIGHT.
PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
LSZ148-211600-
OAK POINT TO SAXON HARBOR WI-
122 AM CDT FRI AUG 21 2026
TODAY
WEST WIND 5 KNOTS BECOMING NORTH LATE IN THE AFTERNOON.
SLIGHT CHANCE OF SHOWERS EARLY IN THE MORNING. PATCHY FOG IN THE
MORNING. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT.
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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