133
WHUS73 KGRR 231834
MWWGRR
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
134 PM EST FRI JAN 23 2026
LMZ844>849-240245-
/O.CON.KGRR.UP.W.0002.000000T0000Z-260124T0900Z/
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-
134 PM EST FRI JAN 23 2026
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 4 AM EST
SATURDAY...
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF UP TO ONE INCH PER
HOUR MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...ST JOSEPH TO MANISTEE.
* WHEN...UNTIL 4 AM EST SATURDAY.
* 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.
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.
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