430
FZUS53 KDLH 231000
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
500 AM CDT THU APR 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.
LSZ140-231600-
GRAND PORTAGE TO GRAND MARAIS MN-
500 AM CDT THU APR 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING
TODAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS IN
THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN
THE AFTERNOON. WAVES 3 TO 5 FEET.
TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
EARLY IN THE EVENING THEN 25 KNOTS AFTER MIDNIGHT, THEN
DECREASING TO 20 KNOTS EARLY IN THE MORNING. RAIN SHOWERS IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS
LIKELY AFTER MIDNIGHT. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO
8 FEET.
FRIDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING NORTH WITH GUSTS TO AROUND 25 KNOTS IN THE LATE
MORNING AND EARLY AFTERNOON, THEN BECOMING NORTHWEST 5 TO
10 KNOTS LATE IN THE AFTERNOON. RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS LIKELY IN THE
AFTERNOON. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
RAIN SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
LSZ141-231600-
GRAND MARAIS TO TACONITE HARBOR MN-
500 AM CDT THU APR 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING
TODAY
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS IN
THE AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE
AFTERNOON. WAVES 3 TO 5 FEET.
TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE EVENING AND OVERNIGHT. RAIN
SHOWERS IN THE EVENING. CHANCE OF THUNDERSTORMS THROUGH THE
NIGHT. RAIN SHOWERS LIKELY AFTER MIDNIGHT. WAVES 3 TO 5 FEET.
FRIDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 3 TO 5 FEET.
FRIDAY NIGHT
NORTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN
SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
LSZ142-231600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
500 AM CDT THU APR 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING
TODAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON. WAVES 2 TO 4 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTH 5 TO 10 KNOTS EARLY IN THE MORNING. RAIN
SHOWERS IN THE EVENING. CHANCE OF THUNDERSTORMS THROUGH THE
NIGHT. RAIN SHOWERS LIKELY AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
FRIDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. WAVES 2 TO 4 FEET.
FRIDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 TO
3 FEET.
LSZ143-231600-
SILVER BAY HARBOR TO TWO HARBORS MN-
500 AM CDT THU APR 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING
TODAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. WAVES 1 TO 3 FEET BUILDING
TO 2 TO 4 FEET IN THE AFTERNOON.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTHWEST 5 TO 10 KNOTS EARLY IN THE MORNING.
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS IN THE EVENING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. WAVES 2 TO 4 FEET.
FRIDAY
WEST WIND 5 TO 10 KNOTS. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 TO
3 FEET.
LSZ144-231600-
TWO HARBORS TO DULUTH MN-
500 AM CDT THU APR 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 10 KNOTS RISING TO 10 TO 15 KNOTS IN THE
LATE MORNING AND AFTERNOON. GUSTS UP TO 20 KNOTS. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON. RAIN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON. WAVES
1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST 5 TO 10 KNOTS AFTER MIDNIGHT. CHANCE OF
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN SHOWERS THROUGH THE
NIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO
3 FEET.
FRIDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 TO 2 FEET.
LSZ145-231600-
DULUTH MN TO PORT WING WI-
500 AM CDT THU APR 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE
AFTERNOON. RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS LATE
IN THE AFTERNOON. WAVES 1 TO 3 FEET.
TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST 5 TO 10 KNOTS AFTER MIDNIGHT. CHANCE OF
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN SHOWERS THROUGH THE
NIGHT. SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO
3 FEET.
FRIDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 TO 2 FEET.
LSZ146-231600-
PORT WING TO SAND ISLAND WI-
500 AM CDT THU APR 23 2026
TODAY
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS
LATE IN THE AFTERNOON. WAVES 1 TO 2 FEET.
TONIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING WEST 5 TO 10 KNOTS AFTER MIDNIGHT. RAIN SHOWERS IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
FRIDAY
WEST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING. WAVES 1 TO 3 FEET.
FRIDAY NIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 TO
2 FEET.
LSZ147-231600-
SAND ISLAND TO BAYFIELD WI-
500 AM CDT THU APR 23 2026
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS EASING TO 10 KNOTS LATE IN
THE AFTERNOON. GUSTS UP TO 20 KNOTS IN THE AFTERNOON. CHANCE OF
SHOWERS AND THUNDERSTORMS LATE IN THE AFTERNOON. WAVES 1 TO
2 FEET.
TONIGHT
SOUTHEAST WIND 10 TO 15 KNOTS BECOMING WEST 5 TO
10 KNOTS EARLY IN THE MORNING. RAIN SHOWERS IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS LIKELY
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
FRIDAY
WEST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING,
THEN SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
3 FEET.
FRIDAY NIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 TO
2 FEET.
LSZ150-231600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
500 AM CDT THU APR 23 2026
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON. WAVES 1 TO 3 FEET.
TONIGHT
SOUTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTH AFTER MIDNIGHT, THEN BECOMING WEST EARLY
IN THE MORNING. RAIN SHOWERS WITH THUNDERSTORMS LIKELY IN THE
EVENING, THEN RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
FRIDAY
WEST WIND 10 TO 15 KNOTS. CHANCE OF THUNDERSTORMS IN
THE MORNING. CHANCE OF RAIN SHOWERS THROUGH THE DAY. WAVES 1 TO
3 FEET.
FRIDAY NIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 TO
2 FEET.
LSZ121-231600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
500 AM CDT THU APR 23 2026
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTH 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS IN THE AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS
LATE IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING SOUTHWEST AFTER MIDNIGHT. RAIN SHOWERS IN THE EVENING.
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS LIKELY
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 TO 10 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
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
LSZ148-231600-
OAK POINT TO SAXON HARBOR WI-
500 AM CDT THU APR 23 2026
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS IN THE AFTERNOON. GUSTS UP TO 20 KNOTS. CHANCE OF
THUNDERSTORMS AND SLIGHT CHANCE OF RAIN SHOWERS LATE IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST 5 TO 10 KNOTS EARLY IN THE MORNING.
RAIN SHOWERS WITH THUNDERSTORMS LIKELY IN THE EVENING, THEN RAIN
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES
1 TO 2 FEET.
FRIDAY
WEST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS IN THE
LATE MORNING AND AFTERNOON. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE MORNING, THEN SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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