557
FZUS53 KDLH 231641
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1140 AM 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.
LSZ140-232200-
GRAND PORTAGE TO GRAND MARAIS MN-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
REST OF TODAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS INCREASING TO 30 KNOTS IN THE AFTERNOON. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FEET.
WAVES OCCASIONALLY TO 7 FEET.
TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. PARTLY
CLOUDY. WAVES 3 TO 5 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET LATE IN THE
AFTERNOON.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING THEN 20 KNOTS AFTER MIDNIGHT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN SHOWERS
AND THUNDERSTORMS LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET IN THE LATE EVENING AND OVERNIGHT. WAVES
OCCASIONALLY TO 7 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ141-232200-
GRAND MARAIS TO TACONITE HARBOR MN-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
REST OF TODAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS INCREASING TO 30 KNOTS LATE. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS LATE. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
PARTLY CLOUDY. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE
LATE EVENING AND OVERNIGHT.
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. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS AFTER MIDNIGHT. CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING, THEN SHOWERS AND THUNDERSTORMS
LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
LSZ142-232200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS INCREASING TO 30 KNOTS LATE. SUNNY. WAVES 1 TO 2 FEET
BUILDING TO 1 TO 3 FEET IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY. WAVES 1 TO 3 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 25 KNOTS IN THE LATE EVENING AND
OVERNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING,
THEN SHOWERS AND THUNDERSTORMS LIKELY AFTER MIDNIGHT. WAVES 1 TO
3 FEET.
LSZ143-232200-
SILVER BAY HARBOR TO TWO HARBORS MN-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 25 KNOTS IN THE LATE EVENING AND
OVERNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT.
WAVES 1 TO 3 FEET.
LSZ144-232200-
TWO HARBORS TO DULUTH MN-
1140 AM CDT THU JUL 23 2026
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
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
30 KNOTS DECREASING TO 25 KNOTS LATE IN THE EVENING, THEN
DECREASING TO 20 KNOTS AFTER MIDNIGHT INCREASING TO 25 KNOTS
EARLY IN THE MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
THE NIGHT. WAVES 1 TO 3 FEET.
LSZ145-232200-
DULUTH MN TO PORT WING WI-
1140 AM CDT THU JUL 23 2026
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS LATE IN THE MORNING. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS IN THE LATE EVENING AND
OVERNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT.
WAVES 1 TO 2 FEET.
LSZ146-232200-
PORT WING TO SAND ISLAND WI-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY
IN THE MORNING. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING, THEN SHOWERS AND THUNDERSTORMS LIKELY AFTER MIDNIGHT.
WAVES 1 TO 3 FEET.
LSZ147-232200-
SAND ISLAND TO BAYFIELD WI-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING THEN 20 KNOTS LATE IN THE AFTERNOON. SUNNY.
WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 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
AND THUNDERSTORMS IN THE EVENING, THEN SHOWERS AND THUNDERSTORMS
LIKELY AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
LSZ150-232200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1140 AM CDT THU JUL 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
REST OF TODAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS LATE. SUNNY. WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING THEN 25 KNOTS LATE IN THE AFTERNOON. SUNNY.
WAVES 1 TO 2 FEET.
FRIDAY NIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS INCREASING TO 30 KNOTS EARLY IN THE MORNING. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN SHOWERS
AND THUNDERSTORMS LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
LSZ121-232200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
1140 AM CDT THU JUL 23 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE EVENING, THEN SHOWERS AND THUNDERSTORMS LIKELY AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
LSZ148-232200-
OAK POINT TO SAXON HARBOR WI-
1140 AM CDT THU JUL 23 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS LATE IN THE MORNING. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
FRIDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE EVENING, THEN SHOWERS AND THUNDERSTORMS LIKELY AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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