463
WHUS73 KGRR 190847
MWWGRR
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
347 AM EST MON JAN 19 2026
LMZ844>849-191700-
/O.CON.KGRR.GL.W.0004.000000T0000Z-260120T0000Z/
/O.CON.KGRR.UP.W.0001.000000T0000Z-260120T1200Z/
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI-
WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI-
347 AM EST MON JAN 19 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...
* WHAT...FOR THE GALE WARNING, NORTHWEST WINDS 25 TO 35 KNOTS
WITH GUSTS UP TO 40 KNOTS AND WAVES 8 TO 13 FEET. FOR THE
HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING SPRAY AT A RATE
OF UP TO ONE INCH PER HOUR MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...ST JOSEPH TO MANISTEE.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 AM EST TUESDAY.
* 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.
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