875  
WHUS53 KGRR 132255  
SMWGRR  
LMZ848-849-868-870-140030-  
/O.NEW.KGRR.MA.W.0017.180713T2255Z-180714T0030Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
655 PM EDT FRI JUL 13 2018  
 
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
NEARSHORE AND OPEN WATERS FROM WHITEHALL TO MANISTEE MI...  
 
* UNTIL 830 PM EDT.  
 
* AT 654 PM EDT, A SEVERE THUNDERSTORM WAS LOCATED 13 NM EAST OF  
MANITOWOC, MOVING EAST SOUTHEAST AT 25 KNOTS.  
 
HAZARD...WIND GUSTS TO 40 KNOTS AND LARGE HAIL.  
 
SOURCE...RADAR.  
 
IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND  
SUDDENLY HIGHER WAVES. LARGE HAIL COULD RESULT IN  
STRUCTURAL DAMAGE.  
 
* LOCATIONS IMPACTED INCLUDE...  
MANISTEE LIGHTHOUSE.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY UNTIL THIS STORM PASSES.  
WIND GUSTS TO 40 KNOTS, LARGE HAIL, HIGH WAVES, DANGEROUS LIGHTNING,  
AND HEAVY RAIN ARE POSSIBLE WITH THIS STORM.  
 
FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF CAUGHT ON THE  
OPEN WATER STAY BELOW DECK IF POSSIBLE, KEEP AWAY FROM UNGROUNDED  
METAL OBJECTS.  
 

 
 
LAT...LON 4425 8634 4413 8642 4406 8651 4404 8651  
4397 8646 4383 8643 4377 8644 4373 8647  
4380 8709 4412 8701 4421 8697 4428 8643  
TIME...MOT...LOC 2254Z 274DEG 27KT 4400 8736  
 
HAIL...>.75IN  
WIND...40KTS  
 

 
 
BORCHARDT  
 
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