512
FZUS53 KDLH 171825
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
125 PM CDT TUE MAR 17 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.
LSZ140-172200-
GRAND PORTAGE TO GRAND MARAIS MN-
125 PM CDT TUE MAR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH WEDNESDAY AFTERNOON...
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY SUNNY.
WAVES 1 TO 2 FEET.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. CHANCE OF SNOW THROUGH THE NIGHT. SLIGHT CHANCE OF VERY
LIGHT FREEZING DRIZZLE AFTER MIDNIGHT. WAVES 1 TO 2 FEET BUILDING
TO 4 TO 6 FEET IN THE LATE EVENING AND OVERNIGHT. WAVES
OCCASIONALLY TO 7 FEET.
WEDNESDAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS LATE IN THE AFTERNOON. SLIGHT CHANCE OF
SNOW AND VERY LIGHT FREEZING DRIZZLE IN THE MORNING. WAVES 4 TO
6 FEET. WAVES OCCASIONALLY TO 7 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS BECOMING NORTH 5 TO 10 KNOTS EARLY IN THE
MORNING. SLIGHT CHANCE OF RAIN AND LIGHT FREEZING RAIN AFTER
MIDNIGHT. WAVES 1 TO 3 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-172200-
GRAND MARAIS TO TACONITE HARBOR MN-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS LATE
IN THE EVENING INCREASING TO 25 KNOTS, THEN DECREASING TO
20 KNOTS EARLY IN THE MORNING. SNOW IN THE EVENING, THEN CHANCE
OF SNOW AND SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AFTER
MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET AFTER
MIDNIGHT.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. SLIGHT CHANCE OF VERY LIGHT FREEZING
DRIZZLE AND SNOW IN THE MORNING. WAVES 1 TO 3 FEET.
WEDNESDAY NIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTH EARLY
IN THE MORNING. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-172200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND OVERNIGHT. SNOW LIKELY IN THE EVENING, THEN
CHANCE OF SNOW AND SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF VERY
LIGHT FREEZING DRIZZLE IN THE MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH
EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN IN THE EVENING, THEN
CHANCE OF RAIN AND SLIGHT CHANCE OF LIGHT FREEZING RAIN AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-172200-
SILVER BAY HARBOR TO TWO HARBORS MN-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
SNOW LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND OVERNIGHT. SNOW IN THE EVENING, THEN CHANCE OF
SNOW AND SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AFTER
MIDNIGHT. WAVES 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF VERY
LIGHT FREEZING DRIZZLE IN THE MORNING. SLIGHT CHANCE OF RAIN IN
THE AFTERNOON. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH
EARLY IN THE MORNING. CHANCE OF RAIN THROUGH THE NIGHT. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-172200-
TWO HARBORS TO DULUTH MN-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. CHANCE OF SNOW
LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND EARLY MORNING. SNOW LIKELY IN THE EVENING, THEN
CHANCE OF SNOW AND SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF VERY
LIGHT FREEZING DRIZZLE IN THE MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHWEST EARLY IN THE MORNING. CHANCE OF RAIN. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-172200-
DULUTH MN TO PORT WING WI-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. CHANCE OF SNOW
LATE. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND OVERNIGHT. CHANCE OF SNOW THROUGH THE NIGHT.
SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. SLIGHT CHANCE OF VERY
LIGHT FREEZING DRIZZLE IN THE MORNING. SLIGHT CHANCE OF RAIN IN
THE AFTERNOON. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHWEST EARLY IN THE MORNING. CHANCE OF RAIN. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-172200-
PORT WING TO SAND ISLAND WI-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND OVERNIGHT. SNOW LIKELY IN THE EVENING, THEN
CHANCE OF SNOW AND SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS EASING TO 10 KNOTS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF VERY LIGHT FREEZING
DRIZZLE IN THE MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHWEST EARLY IN THE MORNING. CHANCE OF RAIN. WAVES 1 TO
2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-172200-
SAND ISLAND TO BAYFIELD WI-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. MOSTLY CLOUDY. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS AFTER
MIDNIGHT. SNOW LIKELY IN THE EVENING, THEN CHANCE OF SNOW AND
SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF VERY LIGHT FREEZING
DRIZZLE IN THE MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHWEST EARLY IN THE MORNING. CHANCE OF RAIN. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-172200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND OVERNIGHT. CHANCE OF SNOW THROUGH THE NIGHT.
SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AFTER MIDNIGHT.
WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET AFTER MIDNIGHT.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
IN THE MORNING. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE IN
THE MORNING. WAVES 1 TO 3 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHWEST EARLY IN THE MORNING. CHANCE OF RAIN THROUGH THE NIGHT.
WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-172200-
OAK POINT TO SAXON HARBOR WI-
125 PM CDT TUE MAR 17 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN THE
LATE EVENING AND OVERNIGHT. CHANCE OF SNOW IN THE EVENING. SLIGHT
CHANCE OF VERY LIGHT FREEZING DRIZZLE AND SNOW AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT CHANCE
OF VERY LIGHT FREEZING DRIZZLE IN THE MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST
EARLY IN THE MORNING. CHANCE OF RAIN THROUGH THE NIGHT. WAVES
1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page