190  
WHUS53 KMKX 102252  
SMWMKX  
LMZ669-671-102345-  
/O.NEW.KMKX.MA.W.0053.170810T2252Z-170810T2345Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
552 PM CDT THU AUG 10 2017  
 
THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
LAKE MICHIGAN FROM SHEBOYGAN WI TO NORTH PORT LIGHT WI 5 NM OFF  
SHORE TO MID LAKE...  
 
* UNTIL 645 PM CDT  
 
* AT 552 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING  
WATERSPOUTS WAS LOCATED 13 NM EAST OF PORT WASHINGTON...MOVING EAST  
AT 20 KNOTS.  
 
HAZARD...WATERSPOUTS...WIND GUSTS IN EXCESS OF 50 KNOTS...AND  
LARGE HAIL.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY  
HAZARDOUS SEAS. BOATS COULD SUFFER SIGNIFICANT STRUCTURAL  
DAMAGE IN HIGH WINDS AND HAIL. SMALL CRAFT COULD CAPSIZE  
IN SUDDENLY HIGHER WAVES.  
 
* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY OPEN WATERS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.  
 
THUNDERSTORMS CAN PRODUCE SUDDEN WATERSPOUTS. WATERSPOUTS CAN EASILY  
OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SEEK SAFE HARBOR  
IMMEDIATELY.  
 
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 4326 8768 4340 8765 4345 8714 4339 8715  
4318 8712  
TIME...MOT...LOC 2252Z 269DEG 20KT 4332 8757  
 
WATERSPOUT...POSSIBLE  
HAIL...>.75IN  
WIND...50KTS  
 

 
 
DDV  
 
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