814
FZUS53 KDLH 201032
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
532 AM CDT THU AUG 20 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.
LSZ140-201600-
GRAND PORTAGE TO GRAND MARAIS MN-
532 AM CDT THU AUG 20 2026
TODAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHEAST IN THE LATE
MORNING AND EARLY AFTERNOON, THEN BECOMING EAST LATE IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING, THEN RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. CHANCE OF RAIN SHOWERS
IN THE EVENING. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST EARLY
IN THE AFTERNOON, THEN BECOMING SOUTHWEST LATE IN THE AFTERNOON.
PARTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING.
SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS.
LSZ141-201600-
GRAND MARAIS TO TACONITE HARBOR MN-
532 AM CDT THU AUG 20 2026
TODAY
NORTH WIND 5 KNOTS BECOMING EAST IN THE LATE MORNING AND
AFTERNOON. RAIN SHOWERS LIKELY IN THE MORNING, THEN RAIN SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT
OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS EASING TO 5 KNOTS EARLY
IN THE MORNING. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON.
PARTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ142-201600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
532 AM CDT THU AUG 20 2026
TODAY
NORTH WIND 5 KNOTS BECOMING SOUTHEAST IN THE LATE
MORNING AND EARLY AFTERNOON, THEN BECOMING NORTHEAST LATE IN THE
AFTERNOON. RAIN SHOWERS IN THE MORNING, THEN RAIN SHOWERS LIKELY
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS UNTIL EARLY MORNING BECOMING
VARIABLE 10 KNOTS OR LESS. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE EVENING. PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH 5 KNOTS
LATE IN THE MORNING, THEN BECOMING SOUTHWEST IN THE AFTERNOON.
PATCHY FOG 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.
LSZ143-201600-
SILVER BAY HARBOR TO TWO HARBORS MN-
532 AM CDT THU AUG 20 2026
TODAY
NORTH WIND 5 KNOTS BECOMING EAST IN THE LATE MORNING AND
EARLY AFTERNOON, THEN BECOMING NORTHEAST LATE IN THE AFTERNOON.
RAIN SHOWERS LIKELY EARLY IN THE MORNING, THEN RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE MORNING. RAIN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT
OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS EARLY IN THE MORNING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTH 5 KNOTS IN THE
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST IN THE
LATE EVENING AND OVERNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ144-201600-
TWO HARBORS TO DULUTH MN-
532 AM CDT THU AUG 20 2026
TODAY
EAST WIND 5 KNOTS. RAIN SHOWERS LIKELY THROUGH THE DAY.
SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE MORNING, THEN CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. RAIN SHOWERS LIKELY AND
CHANCE OF THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS BECOMING NORTHWEST IN THE AFTERNOON.
SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 FOOT OR
LESS.
FRIDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ145-201600-
DULUTH MN TO PORT WING WI-
532 AM CDT THU AUG 20 2026
TODAY
SOUTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. RAIN
SHOWERS LIKELY THROUGH THE DAY. CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. RAIN SHOWERS LIKELY AND
CHANCE OF THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS BECOMING NORTHWEST IN THE AFTERNOON.
MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ146-201600-
PORT WING TO SAND ISLAND WI-
532 AM CDT THU AUG 20 2026
TODAY
SOUTHEAST WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. RAIN
SHOWERS LIKELY THROUGH THE DAY. CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS. SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS IN THE MORNING BECOMING VARIABLE
10 KNOTS OR LESS, THEN BECOMING WEST 5 KNOTS LATE IN THE
AFTERNOON. MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST EARLY IN THE
MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ147-201600-
SAND ISLAND TO BAYFIELD WI-
532 AM CDT THU AUG 20 2026
TODAY
SOUTHEAST WIND 5 KNOTS. CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN THE EVENING. WAVES
1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS BECOMING NORTHWEST LATE IN THE
AFTERNOON. MOSTLY CLOUDY IN THE MORNING THEN CLEARING. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST
5 KNOTS IN THE LATE EVENING AND OVERNIGHT. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ150-201600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
532 AM CDT THU AUG 20 2026
TODAY
SOUTH WIND 5 KNOTS BECOMING SOUTHEAST IN THE AFTERNOON.
SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE MORNING, THEN CHANCE
OF RAIN SHOWERS LATE IN THE MORNING. RAIN SHOWERS LIKELY AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST AFTER MIDNIGHT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT
OR LESS.
FRIDAY
NORTH WIND 5 KNOTS BECOMING WEST LATE IN THE AFTERNOON.
MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY
IN THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ121-201600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
532 AM CDT THU AUG 20 2026
TODAY
SOUTHWEST WIND 5 KNOTS BECOMING SOUTHEAST IN THE LATE
MORNING AND AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS EARLY IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS LATE IN THE MORNING. RAIN
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
EVENING, THEN BECOMING NORTHWEST AFTER MIDNIGHT BECOMING NORTH
EARLY IN THE MORNING. SHOWERS AND CHANCE OF THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS. MOSTLY CLOUDY IN THE MORNING THEN
BECOMING MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING WEST IN THE LATE
EVENING AND EARLY MORNING, THEN RISING TO 5 TO 10 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
LSZ148-201600-
OAK POINT TO SAXON HARBOR WI-
532 AM CDT THU AUG 20 2026
TODAY
SOUTH WIND 5 KNOTS BECOMING SOUTHEAST IN THE AFTERNOON.
CHANCE OF RAIN SHOWERS IN THE MORNING, THEN RAIN SHOWERS LIKELY
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT, THEN
BECOMING NORTHWEST EARLY IN THE MORNING. SHOWERS LIKELY AND
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTH WIND 5 KNOTS. MOSTLY CLOUDY IN THE MORNING THEN
BECOMING MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS RISING TO 5 TO 10 KNOTS. SLIGHT
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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