457  
WHUS56 KSEW 131442  
SMWSEW  
PZZ132-133-131515-  
/O.NEW.KSEW.MA.W.0003.171013T1442Z-171013T1515Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE SEATTLE WA  
742 AM PDT FRI OCT 13 2017  
 
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
EAST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA...  
NORTHERN INLAND WATERS INCLUDING THE SAN JUAN ISLANDS...  
 
* UNTIL 815 AM PDT.  
 
* AT 742 AM PDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING  
WATERSPOUTS WAS LOCATED 9 NM WEST OF WHIDBEY ISLAND...MOVING  
SOUTHEAST AT 10 KNOTS.  
 
HAZARD...WATERSPOUTS...WIND GUSTS 34 KNOTS OR GREATER...AND SMALL  
HAIL.  
 
SOURCE...DOPPLER RADAR INDICATED.  
 
IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE  
LOCALLY HAZARDOUS SEAS. SMALL CRAFT COULD BE DAMAGED  
IN BRIEFLY HIGHER WINDS AND SUDDENLY HIGHER WAVES.  
 
* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY OPEN WATERS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
THUNDERSTORMS CAN PRODUCE SUDDEN WATERSPOUTS. WATERSPOUTS CAN EASILY  
OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SEEK SAFE HARBOR  
IMMEDIATELY.  
 

 
 
LAT...LON 4833 12269 4823 12285 4832 12312 4841 12305  
4846 12292 4844 12291 4844 12287 4843 12287  
4843 12289 4842 12288 4842 12286 4843 12286  
4842 12282 4843 12280 4839 12266  
TIME...MOT...LOC 1442Z 303DEG 12KT 4835 12290  
 
WATERSPOUT...POSSIBLE  
HAIL...<.75IN  
WIND...>34KTS  
 

 
 
JOHNSON  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WA Page Main Text Page