811
WHUS53 KGRR 062149
SMWGRR
LMZ844-845-874-876-878-062315-
/O.NEW.KGRR.MA.W.0036.251006T2149Z-251006T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
549 PM EDT MON OCT 6 2025
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
* SPECIAL MARINE WARNING FOR...
NEARSHORE WATERS FROM ST JOSEPH TO HOLLAND MI...
OPEN WATERS FROM ST JOSEPH TO GRAND HAVEN MI...
* UNTIL 715 PM EDT.
* AT 548 PM EDT, STRONG THUNDERSTORMS CAPABLE OF PRODUCING
WATERSPOUTS WERE LOCATED ALONG A LINE EXTENDING FROM 25 NM EAST OF
WINTHROP HARBOR TO 23 NM NORTHEAST OF WILMETTE HARBOR, MOVING EAST
AT 25 KNOTS.
HAZARD...WATERSPOUTS, WIND GUSTS 34 KNOTS OR GREATER, AND SMALL
HAIL.
SOURCE...RADAR.
IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY
HAZARDOUS SEAS. SMALL CRAFT COULD BE DAMAGED IN BRIEFLY
HIGHER WINDS AND SUDDENLY HIGHER WAVES.
* LOCATIONS IMPACTED INCLUDE...
SOUTH HAVEN LIGHT, ST. JOSEPH LIGHT, AND ST. JOSEPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF CAUGHT ON THE
OPEN WATER STAY BELOW DECK IF POSSIBLE, KEEP AWAY FROM UNGROUNDED
METAL OBJECTS.
LAT...LON 4213 8656 4212 8696 4278 8706 4277 8621
4258 8623 4236 8629 4225 8635 4211 8649
TIME...MOT...LOC 2148Z 254DEG 26KT 4250 8722 4225 8721
WATERSPOUT...POSSIBLE
HAIL...<.75IN
WIND...>34KTS
JC
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