340
FZUS53 KDLH 240442
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1142 PM CDT THU JUL 23 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.
LSZ140-241000-
GRAND PORTAGE TO GRAND MARAIS MN-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. PARTLY CLOUDY.
WAVES 2 TO 4 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES
2 TO 4 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS INCREASING TO 30 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN CHANCE OF SHOWERS
AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 4 TO 6 FEET. WAVES
OCCASIONALLY TO 7 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
SATURDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES
3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET LATE IN THE AFTERNOON. WAVES
OCCASIONALLY TO 7 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ141-241000-
GRAND MARAIS TO TACONITE HARBOR MN-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY IN THE MORNING THEN BECOMING PARTLY SUNNY. WAVES 1 TO
2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS IN THE LATE EVENING AND
OVERNIGHT. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN SHOWERS LIKELY AND CHANCE
OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO
1 TO 3 FEET AFTER MIDNIGHT.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. PATCHY FOG IN THE AFTERNOON. WAVES 1 TO
3 FEET.
LSZ142-241000-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 30 KNOTS.
PATCHY FOG IN THE AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE IN THE EVENING, THEN
INCREASING TO 25 KNOTS AFTER MIDNIGHT DECREASING TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. CHANCE OF RAIN SHOWERS THROUGH THE NIGHT. CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE MORNING. PATCHY FOG IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
LSZ143-241000-
SILVER BAY HARBOR TO TWO HARBORS MN-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 30 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE IN THE EVENING, THEN
INCREASING TO 25 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN SHOWERS THROUGH THE
NIGHT. CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 TO 2 FEET.
LSZ144-241000-
TWO HARBORS TO DULUTH MN-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE IN THE EVENING, THEN
INCREASING TO 25 KNOTS AFTER MIDNIGHT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO
3 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 TO 2 FEET.
LSZ145-241000-
DULUTH MN TO PORT WING WI-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES
1 TO 3 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 TO 2 FEET.
LSZ146-241000-
PORT WING TO SAND ISLAND WI-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. SUNNY IN THE MORNING THEN BECOMING PARTLY SUNNY.
WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS INCREASING TO 25 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN CHANCE OF SHOWERS
AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 TO 3 FEET.
LSZ147-241000-
SAND ISLAND TO BAYFIELD WI-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS INCREASING TO 25 KNOTS IN THE LATE EVENING AND
OVERNIGHT. SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN CHANCE
OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 3 FEET.
LSZ150-241000-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET AFTER MIDNIGHT.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING
AND AFTERNOON.
LSZ121-241000-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE IN THE EVENING, THEN
INCREASING TO 25 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. WAVES 1 FOOT OR LESS.
LSZ148-241000-
OAK POINT TO SAXON HARBOR WI-
1142 PM CDT THU JUL 23 2026
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE IN THE EVENING, THEN
INCREASING TO 25 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTH LATE IN THE AFTERNOON. CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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