087
WHUS73 KDLH 181547
MWWDLH
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DULUTH MN
947 AM CST THU DEC 18 2025
LSZ121-190400-
/O.CON.KDLH.SC.Y.0144.000000T0000Z-251218T2000Z/
/O.CON.KDLH.GL.W.0042.251218T2000Z-251219T1000Z/
/O.EXT.KDLH.UP.W.0009.251219T0000Z-251219T1300Z/
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
947 AM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
4 AM CST FRIDAY...
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT FROM 6 PM THIS
EVENING TO 7 AM CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTHWEST WINDS 5 TO 15
KT WITH GUSTS UP TO 20 KT. FOR THE GALE WARNING, NORTHWEST
WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND WAVES UP TO 3 FT
EXPECTED. FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER EXPECTED, AND MAY
RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 2 PM CST THIS
AFTERNOON. FOR THE GALE WARNING, FROM 2 PM THIS AFTERNOON TO 4
AM CST FRIDAY. FOR THE HEAVY FREEZING SPRAY WARNING, FROM 6 PM
THIS EVENING TO 7 AM CST FRIDAY.
* 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.
LSZ145>147-190400-
/O.CON.KDLH.SC.Y.0144.000000T0000Z-251218T2000Z/
/O.CON.KDLH.GL.W.0042.251218T2000Z-251219T1000Z/
/O.EXT.KDLH.UP.W.0009.251219T0000Z-251219T1300Z/
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
SAND ISLAND TO BAYFIELD WI-
947 AM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
4 AM CST FRIDAY...
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT FROM 6 PM THIS
EVENING TO 7 AM CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTHWEST WINDS 15 TO 25
KT AND WAVES 2 TO 5 FT. FOR THE GALE WARNING, NORTHWEST WINDS
20 TO 30 KT WITH GUSTS UP TO 40 KT AND WAVES 6 TO 9 FT
EXPECTED. FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER EXPECTED, AND MAY
RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...DULUTH MN TO PORT WING WI, PORT WING TO SAND ISLAND WI
AND SAND ISLAND TO BAYFIELD WI.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 2 PM CST THIS
AFTERNOON. FOR THE GALE WARNING, FROM 2 PM THIS AFTERNOON TO 4
AM CST FRIDAY. FOR THE HEAVY FREEZING SPRAY WARNING, FROM 6 PM
THIS EVENING TO 7 AM CST FRIDAY.
* 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.
LSZ148-150-190400-
/O.CON.KDLH.SC.Y.0145.000000T0000Z-251218T2000Z/
/O.CON.KDLH.GL.W.0042.251218T2000Z-251219T1000Z/
/O.EXT.KDLH.UP.W.0009.251219T0000Z-251219T1300Z/
OAK POINT TO SAXON HARBOR WI-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
947 AM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
4 AM CST FRIDAY...
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT FROM 6 PM THIS
EVENING TO 7 AM CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTHWEST WINDS 10 TO 20
KT WITH GUSTS UP TO 25 KT AND WAVES 1 TO 4 FT. FOR THE GALE
WARNING, NORTHWEST WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT
AND WAVES 6 TO 11 FT EXPECTED. FOR THE HEAVY FREEZING SPRAY
WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR
GREATER EXPECTED, AND MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...OAK POINT TO SAXON HARBOR WI AND OUTER APOSTLE ISLANDS
BEYOND 5 NM FROM MAINLAND.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 2 PM CST THIS
AFTERNOON. FOR THE GALE WARNING, FROM 2 PM THIS AFTERNOON TO 4
AM CST FRIDAY. FOR THE HEAVY FREEZING SPRAY WARNING, FROM 6 PM
THIS EVENING TO 7 AM CST FRIDAY.
* 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.
LSZ143-144-190400-
/O.CON.KDLH.SC.Y.0144.000000T0000Z-251218T2000Z/
/O.CON.KDLH.GL.W.0042.251218T2000Z-251219T1000Z/
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
947 AM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
4 AM CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTHWEST WINDS 10 TO 20
KT WITH GUSTS UP TO 25 KT AND WAVES 2 TO 4 FT. FOR THE GALE
WARNING, NORTHWEST WINDS 20 TO 30 KT WITH GUSTS UP TO 45 KT
AND WAVES 2 TO 5 FT EXPECTED.
* WHERE...SILVER BAY HARBOR TO TWO HARBORS MN AND TWO HARBORS TO
DULUTH MN.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 2 PM CST THIS
AFTERNOON. FOR THE GALE WARNING, FROM 2 PM THIS AFTERNOON TO 4
AM CST FRIDAY.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
LSZ142-190400-
/O.CON.KDLH.SC.Y.0144.000000T0000Z-251218T2000Z/
/O.CON.KDLH.GL.W.0042.251218T2000Z-251219T1000Z/
TACONITE HARBOR TO SILVER BAY HARBOR MN-
947 AM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
4 AM CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTHWEST WINDS 10 TO 20 KT
AND WAVES 2 TO 4 FT. FOR THE GALE WARNING, NORTH WINDS 20 TO 30
KT WITH GUSTS UP TO 45 KT AND WAVES 3 TO 6 FT EXPECTED.
* WHERE...TACONITE HARBOR TO SILVER BAY HARBOR MN.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 2 PM CST THIS
AFTERNOON. FOR THE GALE WARNING, FROM 2 PM THIS AFTERNOON TO 4
AM CST FRIDAY.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
LSZ140-141-190400-
/O.CON.KDLH.SC.Y.0144.000000T0000Z-251218T2000Z/
/O.CON.KDLH.SR.W.0004.251218T2100Z-251219T1000Z/
GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
947 AM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...STORM WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
4 AM CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTHWEST WINDS 10 TO 20
KT WITH GUSTS UP TO 25 KT AND WAVES 3 TO 5 FT. FOR THE STORM
WARNING, NORTH WINDS 20 TO 30 KT WITH GUSTS UP TO 50 KT AND
WAVES 3 TO 6 FT EXPECTED.
* WHERE...GRAND PORTAGE TO GRAND MARAIS MN AND GRAND MARAIS TO
TACONITE HARBOR MN.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 2 PM CST THIS
AFTERNOON. FOR THE STORM WARNING, FROM 3 PM THIS AFTERNOON TO
4 AM CST FRIDAY.
* IMPACTS...STORM FORCE WINDS AND HAZARDOUS WAVES WILL CAPSIZE
OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD REMAIN IN PORT, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR SEVERE CONDITIONS.
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