356
FZUS53 KDLH 311142
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
642 AM CDT FRI JUL 31 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.
LSZ140-311600-
GRAND PORTAGE TO GRAND MARAIS MN-
642 AM CDT FRI JUL 31 2026
TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTH AFTER MIDNIGHT.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING EAST IN THE
AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ141-311600-
GRAND MARAIS TO TACONITE HARBOR MN-
642 AM CDT FRI JUL 31 2026
TODAY
WEST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH THE DAY. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 KNOTS BECOMING EAST EARLY IN THE
AFTERNOON, THEN BECOMING NORTHEAST LATE IN THE AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH
5 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ142-311600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
642 AM CDT FRI JUL 31 2026
TODAY
WEST WIND 5 KNOTS EARLY IN THE MORNING BECOMING VARIABLE
10 KNOTS OR LESS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH THE DAY. WAVES 1 FOOT OR LESS.
TONIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTH 5 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 KNOTS EARLY IN THE MORNING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST 5 KNOTS EARLY
IN THE AFTERNOON BECOMING VARIABLE 10 KNOTS OR LESS. MOSTLY
SUNNY. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS. MOSTLY CLOUDY
IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ143-311600-
SILVER BAY HARBOR TO TWO HARBORS MN-
642 AM CDT FRI JUL 31 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 FOOT OR LESS.
TONIGHT
VARIABLE WINDS 10 KNOTS OR LESS. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ144-311600-
TWO HARBORS TO DULUTH MN-
642 AM CDT FRI JUL 31 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTH IN THE AFTERNOON.
CHANCE OF RAIN SHOWERS IN THE MORNING. SLIGHT CHANCE OF
THUNDERSTORMS THROUGH THE DAY. SLIGHT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE MORNING.
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
LSZ145-311600-
DULUTH MN TO PORT WING WI-
642 AM CDT FRI JUL 31 2026
TODAY
WEST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST AFTER MIDNIGHT,
THEN BECOMING NORTH EARLY IN THE MORNING. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
LSZ146-311600-
PORT WING TO SAND ISLAND WI-
642 AM CDT FRI JUL 31 2026
TODAY
SOUTHWEST WIND 5 KNOTS. CHANCE OF SHOWERS IN THE
MORNING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE DAY. SLIGHT
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS UNTIL EARLY
MORNING BECOMING VARIABLE 10 KNOTS OR LESS. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ147-311600-
SAND ISLAND TO BAYFIELD WI-
642 AM CDT FRI JUL 31 2026
TODAY
SOUTHWEST WIND 5 KNOTS EARLY IN THE MORNING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTHWEST 5 KNOTS LATE
IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST 5 KNOTS EARLY
IN THE MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
LSZ150-311600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
642 AM CDT FRI JUL 31 2026
TODAY
SOUTHWEST WIND 5 KNOTS. PATCHY FOG EARLY IN THE MORNING.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE DAY. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE
MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ121-311600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
642 AM CDT FRI JUL 31 2026
TODAY
SOUTHWEST WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
AFTERNOON. SLIGHT CHANCE OF SHOWERS EARLY IN THE MORNING. SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE DAY. CHANCE OF SHOWERS IN THE
LATE MORNING AND AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ148-311600-
OAK POINT TO SAXON HARBOR WI-
642 AM CDT FRI JUL 31 2026
TODAY
SOUTH WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS EARLY IN
THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE DAY.
CHANCE OF SHOWERS IN THE LATE MORNING AND AFTERNOON. WAVES 1 FOOT
OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 KNOTS. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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