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whus46 kpqr 210518 cca

coastal hazard message...corrected
national weather service portland or
918 pm pst fri jan 20 2017

north oregon coast-central oregon coast-south washington coast-
918 pm pst fri jan 20 2017

...high surf advisory now in effect from 4 am to 10 pm pst
saturday for the south washington and north and central oregon

* seas...seas 20 to 23 feet. dominant period around 18 seconds.

* impacts...waves may rise unexpectedly. beachgoers are encouraged
  to stay off jetties...rocks...coastal cliffs...and out of areas
  near the water's edge.

precautionary/preparedness actions...

a high surf advisory means that high surf will affect beaches in
the advisory area...and seas may unexpectedly sweep beachgoers
off their feet.


whus46 ksew 211655

coastal hazard message
national weather service seattle wa
855 am pst sat jan 21 2017

north coast-central coast-
855 am pst sat jan 21 2017

...high surf advisory remains in effect until 6 pm pst this

* waves and/or surf...west swell 16 to 20 feet with a period of 
  17 to 19 seconds. 

* some affected locations...ocean shores...westport.

* timing...through this afternoon.

* impacts...this swell train has a fairly long period at 17 to 
  19 seconds...which means waves will have higher energy 
  allowing them to run farther up beaches. high surf can cause 
  significant beach erosion. large waves are dangerous to beach 
  goers as waves can sweep quickly up beaches and overtop 
  jetties. debris tossed about in the surf can also be 

precautionary/preparedness actions...

a high surf advisory means that high surf will affect beaches in
the advisory area...producing localized beach erosion and
dangerous swimming conditions.



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