534
WHUS73 KDLH 160846
MWWDLH
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DULUTH MN
346 AM CDT MON MAR 16 2026
LSZ141-162100-
/O.CON.KDLH.GL.W.0011.000000T0000Z-260317T0600Z/
/O.CON.KDLH.UP.W.0009.000000T0000Z-260316T2100Z/
GRAND MARAIS TO TACONITE HARBOR MN-
346 AM CDT MON MAR 16 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 4 PM CDT
THIS AFTERNOON...
* WHAT...FOR THE GALE WARNING, NORTH WINDS 15 TO 25 KT WITH
GUSTS UP TO 40 KT AND WAVES 2 TO 5 FT. FOR THE HEAVY FREEZING
SPRAY WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR
OR GREATER MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...GRAND MARAIS TO TACONITE HARBOR MN.
* WHEN...FOR THE GALE WARNING, UNTIL 1 AM CDT TUESDAY. FOR THE
HEAVY FREEZING SPRAY WARNING, UNTIL 4 PM CDT THIS AFTERNOON.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF
STABILITY. STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
LSZ142-147-148-150-162100-
/O.CON.KDLH.GL.W.0011.000000T0000Z-260316T2100Z/
/O.CON.KDLH.UP.W.0009.000000T0000Z-260316T2100Z/
TACONITE HARBOR TO SILVER BAY HARBOR MN-
SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
346 AM CDT MON MAR 16 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 4 PM CDT
THIS AFTERNOON...
* WHAT...FOR THE GALE WARNING, NORTH WINDS 20 TO 30 KT WITH
GUSTS UP TO 35 KT AND WAVES 10 TO 15 FT. FOR THE HEAVY
FREEZING SPRAY WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM
PER HOUR OR GREATER MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...TACONITE HARBOR TO SILVER BAY HARBOR MN, SAND ISLAND
TO BAYFIELD WI, OAK POINT TO SAXON HARBOR WI AND OUTER APOSTLE
ISLANDS BEYOND 5 NM FROM MAINLAND.
* WHEN...UNTIL 4 PM CDT THIS AFTERNOON.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF
STABILITY. STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
LSZ143>146-161700-
/O.CON.KDLH.GL.W.0011.000000T0000Z-260316T1700Z/
/O.CON.KDLH.UP.W.0009.000000T0000Z-260316T1700Z/
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
346 AM CDT MON MAR 16 2026
..GALE WARNING REMAINS IN EFFECT UNTIL NOON CDT TODAY
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CDT
TODAY...
* WHAT...FOR THE GALE WARNING, NORTH WINDS 20 TO 35 KT AND WAVES
7 TO 10 FT. FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER MAY RAPIDLY
ACCUMULATE ON VESSELS.
* WHERE...SILVER BAY HARBOR TO TWO HARBORS MN, TWO HARBORS TO
DULUTH MN, DULUTH MN TO PORT WING WI AND PORT WING TO SAND
ISLAND WI.
* WHEN...UNTIL NOON CDT TODAY.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF
STABILITY. STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
LSZ140-162100-
/O.CON.KDLH.SR.W.0003.000000T0000Z-260316T2100Z/
/O.CON.KDLH.UP.W.0009.000000T0000Z-260316T2100Z/
GRAND PORTAGE TO GRAND MARAIS MN-
346 AM CDT MON MAR 16 2026
...STORM WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 4 PM CDT
THIS AFTERNOON...
* WHAT...FOR THE STORM WARNING, NORTH WINDS 20 TO 30 KT WITH GUSTS
UP TO 50 KT AND WAVES 3 TO 6 FT. FOR THE HEAVY FREEZING SPRAY
WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR
GREATER MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...GRAND PORTAGE TO GRAND MARAIS MN.
* WHEN...UNTIL 4 PM CDT THIS AFTERNOON.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF
STABILITY. STORM FORCE WINDS AND HAZARDOUS WAVES WILL CAPSIZE
OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
MARINERS SHOULD REMAIN IN PORT, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR SEVERE CONDITIONS.
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