408  
FZUS73 KGRR 030113  
MWSGRR  
 
MARINE WEATHER STATEMENT  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
913 PM EDT WED JUL 2 2025  
 
LMZ848-870-030122-  
/O.CAN.KGRR.MA.W.0023.000000T0000Z-250703T0145Z/  
913 PM EDT WED JUL 2 2025  
   
..THE SPECIAL MARINE WARNING IS CANCELLED
 
 
THE AFFECTED AREAS WERE...  
NEARSHORE AND OPEN WATERS FROM WHITEHALL TO PENTWATER MI...  
 
THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA AND NO LONGER  
POSES A SIGNIFICANT THREAT TO BOATERS.  
 
LAT...LON 4341 8644 4334 8641 4314 8628 4306 8625  
4306 8710 4338 8714  
TIME...MOT...LOC 0112Z 313DEG 30KT 4320 8660  
 

 
 
LMZ847-872-030145-  
/O.CON.KGRR.MA.W.0023.000000T0000Z-250703T0145Z/  
913 PM EDT WED JUL 2 2025  
   
..A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
 
 
FOR THE FOLLOWING AREAS...  
NEARSHORE AND OPEN WATERS FROM GRAND HAVEN TO WHITEHALL MI...  
 
AT 912 PM EDT, A STRONG THUNDERSTORM WAS LOCATED 11 NM WEST OF  
MUSKEGON LIGHT, MOVING SOUTHEAST AT 30 KNOTS.  
 
HAZARD...WIND GUSTS 34 KNOTS OR GREATER AND SMALL HAIL.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND  
SUDDENLY HIGHER WAVES.  
 
LOCATIONS IMPACTED INCLUDE...  
WHITE LAKE PIER HEADS, MONA LAKE CHANNEL, MUSKEGON LIGHT, AND THE  
WHITE LAKE PIERHEADS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.  
 

 
 
LAT...LON 4341 8644 4334 8641 4314 8628 4306 8625  
4306 8710 4338 8714  
TIME...MOT...LOC 0112Z 313DEG 30KT 4320 8660  
 
HAIL...<.75IN  
WIND...>34KTS  
 

 
 
RAH  
 
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