001
FZUS53 KDLH 311821
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
121 PM 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.
LSZ140-312200-
GRAND PORTAGE TO GRAND MARAIS MN-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON, THEN CHANCE OF
SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH AFTER
MIDNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING EAST 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 TO 3 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ141-312200-
GRAND MARAIS TO TACONITE HARBOR MN-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
WEST WIND 5 KNOTS. PATCHY FOG EARLY IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE DAY.
WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
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. CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTH WIND 5 KNOTS. CHANCE OF RAIN SHOWERS IN
THE EVENING. WAVES 1 FOOT OR LESS.
LSZ142-312200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH THE DAY. PATCHY FOG LATE. WAVES 1 FOOT
OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE MORNING.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. PATCHY
FOG THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
SATURDAY NIGHT
NORTH WIND 5 KNOTS. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ143-312200-
SILVER BAY HARBOR TO TWO HARBORS MN-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. PATCHY FOG EARLY
IN THE AFTERNOON. CHANCE OF THUNDERSTORMS EARLY IN THE AFTERNOON.
CHANCE OF SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS
LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH 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. SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
LSZ144-312200-
TWO HARBORS TO DULUTH MN-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTH
LATE. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING NORTH EARLY IN THE
MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING.
WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS EASING TO 5 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY.
WAVES 1 TO 3 FEET.
LSZ145-312200-
DULUTH MN TO PORT WING WI-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST
LATE. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING.
PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FEET.
SATURDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS EASING TO 5 KNOTS AFTER MIDNIGHT. PATCHY FOG
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
LSZ146-312200-
PORT WING TO SAND ISLAND WI-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. CHANCE OF SHOWERS
EARLY IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS THROUGH
THE DAY. SLIGHT CHANCE OF SHOWERS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING.
WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
LSZ147-312200-
SAND ISLAND TO BAYFIELD WI-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. CHANCE OF SHOWERS EARLY
IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE DAY.
SLIGHT CHANCE OF SHOWERS LATE. 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. 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
NORTH WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
LSZ150-312200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
WEST WIND 5 TO 10 KNOTS. CHANCE OF SHOWERS EARLY
IN THE AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE DAY.
SLIGHT CHANCE OF SHOWERS LATE. 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
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ121-312200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST LATE.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. PATCHY
FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. PATCHY FOG IN THE
MORNING. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ148-312200-
OAK POINT TO SAXON HARBOR WI-
121 PM CDT FRI JUL 31 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST LATE.
CHANCE OF SHOWERS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS THROUGH THE DAY. SLIGHT CHANCE OF SHOWERS LATE.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. PATCHY
FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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