458
FZUS53 KDLH 232137
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
437 PM CDT MON MAR 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.
LSZ140-240400-
GRAND PORTAGE TO GRAND MARAIS MN-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING WEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS LATE IN THE NIGHT. SLIGHT CHANCE OF SNOW IN THE LATE
EVENING AND EARLY MORNING. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET AFTER MIDNIGHT.
TUESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN
THE MORNING, THEN BECOMING EAST IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE MORNING
AND AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
TUESDAY NIGHT
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST EARLY
IN THE MORNING. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES 1 TO
3 FEET.
WEDNESDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. CHANCE OF SNOW. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-240400-
GRAND MARAIS TO TACONITE HARBOR MN-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF SNOW UNTIL EARLY MORNING. WAVES 1 TO
2 FEET BUILDING TO 1 TO 3 FEET AFTER MIDNIGHT.
TUESDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTH LATE IN THE
MORNING, THEN BECOMING SOUTHEAST IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 TO 3 FEET.
TUESDAY NIGHT
EAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW.
WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-240400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS RISING TO 15 TO 20 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE
OF SNOW IN THE EVENING. WAVES 1 TO 3 FEET.
TUESDAY
NORTHWEST WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
PARTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHEAST WIND 5 KNOTS. SLIGHT CHANCE OF SNOW
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW
THROUGH THE DAY. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-240400-
SILVER BAY HARBOR TO TWO HARBORS MN-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS WITH GUSTS TO AROUND 25 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF SNOW LATE IN THE EVENING. WAVES 1 TO 3 FEET.
TUESDAY
NORTHWEST WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
PARTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
RAIN AND SNOW AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW
IN THE MORNING. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-240400-
TWO HARBORS TO DULUTH MN-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
LATE IN THE NIGHT. SLIGHT CHANCE OF SNOW IN THE LATE EVENING AND
EARLY MORNING. WAVES 1 TO 2 FEET.
TUESDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
MORNING AND AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-240400-
DULUTH MN TO PORT WING WI-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING SOUTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS LATE IN THE NIGHT. SLIGHT CHANCE OF RAIN LATE IN THE
EVENING. SLIGHT CHANCE OF SNOW IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
MORNING AND AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-240400-
PORT WING TO SAND ISLAND WI-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHWEST 15 TO 20 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF SNOW IN THE LATE EVENING AND EARLY MORNING. WAVES 1 TO
2 FEET.
TUESDAY
WEST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
MORNING AND AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
TUESDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW
IN THE MORNING. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-240400-
SAND ISLAND TO BAYFIELD WI-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE LATE EVENING AND
OVERNIGHT. SLIGHT CHANCE OF SNOW IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 KNOTS BECOMING NORTH LATE IN THE MORNING,
THEN BECOMING EAST IN THE AFTERNOON. PARTLY SUNNY. WAVES 1 TO
2 FEET.
TUESDAY NIGHT
EAST WIND 5 KNOTS. PATCHY FOG AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW
IN THE MORNING. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-240400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTH WIND 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. SLIGHT CHANCE OF SNOW
IN THE LATE EVENING AND EARLY MORNING. WAVES 1 TO 3 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN THE
MORNING, THEN BECOMING EAST IN THE AFTERNOON. PARTLY SUNNY. WAVES
1 TO 2 FEET.
TUESDAY NIGHT
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SNOW
IN THE MORNING. WAVES 1 TO 3 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-240400-
OAK POINT TO SAXON HARBOR WI-
437 PM CDT MON MAR 23 2026
TONIGHT
SOUTH WIND 10 TO 15 KNOTS BECOMING SOUTHWEST WITH
GUSTS TO AROUND 20 KNOTS IN THE LATE EVENING AND OVERNIGHT.
SLIGHT CHANCE OF RAIN LATE IN THE EVENING. SLIGHT CHANCE OF SNOW
IN THE LATE EVENING AND EARLY MORNING. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN THE
MORNING, THEN BECOMING NORTHEAST IN THE AFTERNOON. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
TUESDAY NIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST AFTER
MIDNIGHT. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
WEDNESDAY
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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