772
FZUS53 KDLH 172101
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
401 PM CDT FRI APR 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.
LSZ140-180400-
GRAND PORTAGE TO GRAND MARAIS MN-
401 PM CDT FRI APR 17 2026
..GALE WARNING IN EFFECT UNTIL 3 AM CDT SATURDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 35 KNOTS
INCREASING TO 40 KNOTS AFTER MIDNIGHT, THEN DECREASING TO
30 KNOTS LATE IN THE NIGHT. PATCHY FOG EARLY IN THE EVENING. RAIN
LIKELY AND CHANCE OF THUNDERSTORMS EARLY IN THE EVENING, THEN
CHANCE OF RAIN LATE IN THE EVENING. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 3 FEET LATE IN THE NIGHT.
SATURDAY
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY
SUNNY. WAVES 3 TO 5 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
SATURDAY NIGHT
NORTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 25 KNOTS EARLY IN THE MORNING. MOSTLY
CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 3 TO
5 FEET SUBSIDING TO 1 TO 3 FEET EARLY IN THE MORNING. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
SUNDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-180400-
GRAND MARAIS TO TACONITE HARBOR MN-
401 PM CDT FRI APR 17 2026
..GALE WARNING IN EFFECT UNTIL 3 AM CDT SATURDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GALES UP TO 40 KNOTS
DECREASING TO 35 KNOTS LATE IN THE EVENING, THEN INCREASING TO
40 KNOTS AFTER MIDNIGHT DECREASING TO 30 KNOTS LATE IN THE NIGHT.
RAIN LIKELY AND CHANCE OF THUNDERSTORMS EARLY IN THE EVENING.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET LATE IN THE NIGHT.
SATURDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 2 TO 4 FEET.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 25 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY.
WAVES 1 TO 3 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-180400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
401 PM CDT FRI APR 17 2026
..GALE WARNING IN EFFECT UNTIL 3 AM CDT SATURDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GALES UP TO 40 KNOTS
DECREASING TO 35 KNOTS LATE IN THE EVENING, THEN INCREASING TO
40 KNOTS AFTER MIDNIGHT DECREASING TO 30 KNOTS LATE IN THE NIGHT.
CHANCE OF RAIN AND THUNDERSTORMS EARLY IN THE EVENING. WAVES 1 TO
3 FEET.
SATURDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 25 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-180400-
SILVER BAY HARBOR TO TWO HARBORS MN-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
INCREASING TO 35 KNOTS LATE IN THE EVENING, THEN DECREASING TO
30 KNOTS AFTER MIDNIGHT DECREASING TO 25 KNOTS LATE IN THE NIGHT.
CHANCE OF RAIN AND THUNDERSTORMS EARLY IN THE EVENING. WAVES 1 TO
2 FEET.
SATURDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET
IN THE AFTERNOON.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 25 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-180400-
TWO HARBORS TO DULUTH MN-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. SLIGHT CHANCE OF RAIN AND THUNDERSTORMS EARLY IN THE
EVENING. WAVES 1 TO 3 FEET.
SATURDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. PARTLY SUNNY. WAVES 1 TO 3 FEET.
SATURDAY NIGHT
NORTHWEST WIND 20 TO 25 KNOTS EASING TO 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. PARTLY
CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE
EVENING AND OVERNIGHT.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-180400-
DULUTH MN TO PORT WING WI-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. SLIGHT CHANCE OF RAIN AND THUNDERSTORMS EARLY IN THE
EVENING. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN THE LATE
EVENING AND OVERNIGHT.
SATURDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY
SUNNY. WAVES 3 TO 5 FEET.
SATURDAY NIGHT
WEST WIND 20 TO 25 KNOTS BECOMING NORTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT.
PARTLY CLOUDY. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-180400-
PORT WING TO SAND ISLAND WI-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 5 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
RISING TO 15 TO 20 KNOTS WITH GUSTS TO AROUND 30 KNOTS IN THE
LATE EVENING AND OVERNIGHT. CHANCE OF RAIN AND THUNDERSTORMS
EARLY IN THE EVENING. WAVES 3 TO 5 FEET.
SATURDAY
WEST WIND 20 TO 25 KNOTS EASING TO 10 TO 20 KNOTS
LATE IN THE MORNING, THEN RISING TO 20 TO 25 KNOTS IN THE
AFTERNOON. GUSTS UP TO 30 KNOTS. PARTLY SUNNY. WAVES 4 TO 6 FEET.
WAVES OCCASIONALLY TO 7 FEET.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO
7 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-180400-
SAND ISLAND TO BAYFIELD WI-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS AFTER MIDNIGHT. CHANCE OF RAIN AND
THUNDERSTORMS EARLY IN THE EVENING. WAVES 3 TO 5 FEET.
SATURDAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND
30 KNOTS. PARTLY SUNNY. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO
7 FEET.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY.
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET AFTER MIDNIGHT. WAVES
OCCASIONALLY TO 7 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-180400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT
TONIGHT
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE EVENING AND OVERNIGHT. PATCHY
FOG EARLY IN THE EVENING. RAIN LIKELY AND CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING, THEN SLIGHT CHANCE OF RAIN LATE IN THE
EVENING. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 7 FEET.
SATURDAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND
30 KNOTS. PARTLY SUNNY. WAVES 4 TO 7 FEET. WAVES OCCASIONALLY TO
9 FEET.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 20 KNOTS. MOSTLY CLOUDY IN THE EVENING
THEN BECOMING PARTLY CLOUDY. WAVES 4 TO 6 FEET SUBSIDING TO 1 TO
3 FEET EARLY IN THE MORNING. WAVES OCCASIONALLY TO 8 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ121-180400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. CHANCE OF RAIN AND THUNDERSTORMS EARLY IN THE EVENING.
WAVES 1 TO 2 FEET.
SATURDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-180400-
OAK POINT TO SAXON HARBOR WI-
401 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TONIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. PATCHY FOG EARLY IN THE EVENING. CHANCE OF RAIN AND
THUNDERSTORMS EARLY IN THE EVENING, THEN SLIGHT CHANCE OF RAIN
LATE IN THE EVENING. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
AFTER MIDNIGHT.
SATURDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES
2 TO 4 FEET.
SATURDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN
THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 2 FEET AFTER MIDNIGHT.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS EASING TO 5 KNOTS LATE IN
THE AFTERNOON. 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page