939
FZUS53 KDLH 180222
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
922 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.
LSZ140-181000-
GRAND PORTAGE TO GRAND MARAIS MN-
922 PM CDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
REST OF TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
20 KNOTS INCREASING TO 25 KNOTS AFTER MIDNIGHT. CHANCE OF SNOW.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET AFTER MIDNIGHT.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. CHANCE OF SNOW IN THE MORNING. WAVES 3 TO 5 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS BECOMING NORTH
5 TO 10 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN AND
LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 3 FEET IN THE LATE EVENING AND OVERNIGHT.
THURSDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST EARLY
IN THE AFTERNOON, THEN BECOMING SOUTH LATE IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-181000-
GRAND MARAIS TO TACONITE HARBOR MN-
922 PM CDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT WEDNESDAY
REST OF TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
20 KNOTS INCREASING TO 25 KNOTS AFTER MIDNIGHT. SNOW LIKELY LATE
IN THE EVENING, THEN CHANCE OF SNOW AFTER MIDNIGHT. SLIGHT CHANCE
OF SNOW TOWARD DAYBREAK. WAVES 2 TO 4 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AND SNOW
IN THE MORNING. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET LATE
IN THE AFTERNOON.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH
EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN AND LIGHT FREEZING
RAIN THROUGH THE NIGHT. WAVES 1 TO 3 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTH IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-181000-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SNOW LIKELY LATE IN THE EVENING, THEN CHANCE OF
SNOW AFTER MIDNIGHT. SLIGHT CHANCE OF SNOW TOWARD DAYBREAK. WAVES
1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING THEN 20 KNOTS EARLY 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 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 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTH IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-181000-
SILVER BAY HARBOR TO TWO HARBORS MN-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SNOW LIKELY LATE IN THE EVENING, THEN CHANCE OF SNOW
AFTER MIDNIGHT. SLIGHT CHANCE OF SNOW AND VERY LIGHT FREEZING
DRIZZLE TOWARD DAYBREAK. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE 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 NORTH
EARLY IN THE MORNING. CHANCE OF RAIN THROUGH THE NIGHT. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-181000-
TWO HARBORS TO DULUTH MN-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SNOW LIKELY LATE IN THE EVENING, THEN CHANCE OF SNOW
AFTER MIDNIGHT. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AND
SNOW TOWARD DAYBREAK. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 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
NORTHWEST EARLY IN THE MORNING. CHANCE OF RAIN. WAVES 1 FOOT OR
LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-181000-
DULUTH MN TO PORT WING WI-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SNOW LIKELY LATE IN THE EVENING, THEN CHANCE OF SNOW
AFTER MIDNIGHT. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AND
SNOW TOWARD DAYBREAK. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE 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 FOOT OR
LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-181000-
PORT WING TO SAND ISLAND WI-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SNOW LIKELY LATE IN THE EVENING, THEN CHANCE OF SNOW
AFTER MIDNIGHT. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE AND
SNOW TOWARD DAYBREAK. WAVES 1 TO 2 FEET.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. 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. WAVES 1 TO
2 FEET.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-181000-
SAND ISLAND TO BAYFIELD WI-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS AFTER MIDNIGHT. SNOW LIKELY LATE IN THE EVENING, THEN
CHANCE OF SNOW AND SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. 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. WAVES 1 TO
2 FEET.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-181000-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
922 PM CDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT WEDNESDAY
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS INCREASING TO 25 KNOTS AFTER MIDNIGHT. CHANCE OF SNOW IN
THE LATE EVENING AND EARLY MORNING. SLIGHT CHANCE OF VERY LIGHT
FREEZING DRIZZLE AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO
2 TO 4 FEET AFTER MIDNIGHT.
WEDNESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE IN THE
MORNING. WAVES 1 TO 3 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 10 TO 15 KNOTS BECOMING
NORTHWEST 5 TO 10 KNOTS EARLY IN THE MORNING. CHANCE OF RAIN.
WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST LATE
IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-181000-
OAK POINT TO SAXON HARBOR WI-
922 PM CDT TUE MAR 17 2026
REST OF TONIGHT
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF SNOW IN THE LATE EVENING AND EARLY MORNING.
SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE 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. WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
MORNING AND AFTERNOON. MOSTLY SUNNY. 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
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