638
FZUS53 KDLH 301822
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
122 PM CDT THU JUL 30 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.
LSZ140-302200-
GRAND PORTAGE TO GRAND MARAIS MN-
122 PM CDT THU JUL 30 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. CHANCE OF RAIN SHOWERS EARLY IN THE AFTERNOON.
CHANCE OF THUNDERSTORMS THROUGH THE DAY. SLIGHT CHANCE OF RAIN
SHOWERS LATE. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING, THEN CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES
1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE EVENING AND
OVERNIGHT.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH
THE DAY. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
FRIDAY NIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTH AFTER
MIDNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
LSZ141-302200-
GRAND MARAIS TO TACONITE HARBOR MN-
122 PM CDT THU JUL 30 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. PATCHY DENSE FOG EARLY IN THE AFTERNOON. CHANCE
OF SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON, THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
PATCHY FOG IN THE EVENING. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
LSZ142-302200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
122 PM CDT THU JUL 30 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. PATCHY DENSE FOG THROUGH THE DAY. CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS EARLY IN THE EVENING BECOMING NORTH,
THEN BECOMING WEST AFTER MIDNIGHT BECOMING VARIABLE 10 KNOTS OR
LESS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 FOOT OR
LESS.
FRIDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING WEST 5 KNOTS
LATE IN THE MORNING, THEN BECOMING SOUTHWEST IN THE AFTERNOON.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
PATCHY FOG IN THE EVENING. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
LSZ143-302200-
SILVER BAY HARBOR TO TWO HARBORS MN-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH THE DAY. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
EVENING, THEN BECOMING SOUTHWEST AFTER MIDNIGHT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 FOOT OR LESS.
LSZ144-302200-
TWO HARBORS TO DULUTH MN-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS THROUGH
THE DAY. PATCHY SMOKE LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER MIDNIGHT.
PATCHY SMOKE IN THE EVENING. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE
MORNING. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. WAVES 1 FOOT OR LESS.
LSZ145-302200-
DULUTH MN TO PORT WING WI-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS EARLY
IN THE AFTERNOON. PATCHY SMOKE LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS. PATCHY SMOKE IN THE EVENING.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST IN THE
AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.
WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING WEST IN THE LATE
EVENING AND EARLY MORNING, THEN BECOMING NORTHWEST EARLY IN THE
MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING. WAVES 1 FOOT OR LESS.
LSZ146-302200-
PORT WING TO SAND ISLAND WI-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH THE DAY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST 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.
FRIDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE
MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ147-302200-
SAND ISLAND TO BAYFIELD WI-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH THE DAY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST EARLY IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN
THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ150-302200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 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
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST EARLY IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE MORNING, THEN SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH EARLY IN
THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ121-302200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS
THROUGH THE DAY. PATCHY SMOKE LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS BECOMING EAST LATE IN THE AFTERNOON.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING, THEN SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING NORTHWEST EARLY IN
THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ148-302200-
OAK POINT TO SAXON HARBOR WI-
122 PM CDT THU JUL 30 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS
THROUGH THE DAY. PATCHY SMOKE LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
FRIDAY
SOUTHWEST WIND 5 KNOTS BECOMING EAST LATE IN THE
AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING WEST EARLY IN THE
MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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