717  
WHUS51 KBOX 032146  
SMWBOX  
ANZ230-250-251-032245-  
/O.NEW.KBOX.MA.W.0005.250503T2146Z-250503T2245Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
546 PM EDT SAT MAY 3 2025  
 
THE NATIONAL WEATHER SERVICE IN BOSTON/NORTON HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
BOSTON HARBOR...  
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK NATIONAL  
MARINE SANCTUARY...  
MASSACHUSETTS BAY AND IPSWICH BAY...  
 
* UNTIL 645 PM EDT.  
 
* AT 545 PM EDT, SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE  
EXTENDING FROM 17 NM WEST OF ROWLEY TO 8 NM NORTHWEST OF REVERE TO  
8 NM SOUTHWEST OF BOSTON, MOVING EAST AT 45 KNOTS.  
 
HAZARD...WIND GUSTS IN EXCESS OF 50 KNOTS AND SMALL HAIL.  
 
SOURCE...RADAR. THESE STORMS HAVE HAD A HISTORY OF 40 TO 60 MPH  
WIND GUSTS AND SPORADIC WIND DAMAGE IN CENTRAL AND  
EASTERN MASSACHUSETTS.  
 
IMPACT...BOATS COULD SUFFER SIGNIFICANT STRUCTURAL DAMAGE IN HIGH  
WINDS. SMALL CRAFT COULD CAPSIZE IN SUDDENLY HIGHER  
WAVES.  
 
* LOCATIONS IMPACTED INCLUDE...  
EASTERN POINT MA, THE COASTAL WATERS EAST OF CAPE ANN, BOSTON  
LIGHT, MASS BAY BUOY 44029, STELLWAGEN BANK, SANDY BAY, MARBLEHEAD  
NECK, BROAD SOUND, THE COASTAL WATERS EAST OF BOSTON HARBOR, MINOT  
LIGHT, BOSTON HARBOR, BEVERLY HARBOR, BOSTON BUOY 44013, IPSWICH  
BAY, THATCHER ISLAND, JEFFREYS LEDGE BUOY 44098, QUINCY HARBOR,  
ESSEX BAY, PLUM ISLAND, AND SCITUATE HARBOR.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.  
 
MOVE TO SAFE HARBOR IMMEDIATELY AS GUSTY WINDS AND HIGH WAVES ARE  
EXPECTED.  
 

 
 
LAT...LON 4286 7015 4249 6991 4216 7032 4217 7075  
4223 7083 4220 7099 4226 7100 4229 7109  
4240 7111 4241 7102 4249 7093 4258 7094  
4261 7082 4265 7088 4276 7091 4278 7090  
4279 7085 4281 7084 4279 7081  
TIME...MOT...LOC 2145Z 269DEG 43KT 4271 7128 4250 7115 4224 7126  
 
HAIL...<.75IN  
WIND...50KTS  
 

 
 
LOCONTO  
 
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