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whhw40 phfo 220140

coastal hazard message
national weather service honolulu hi
340 pm hst tue nov 21 2017

...high surf warning in effect for north and east facing shores 
of niihau kauai oahu molokai maui and the big island...

.a strong low pressure system over the northeast pacific ocean
will generate a large north swell will build through the day on 
wednesday...peak on thursday and then decline thursday night and

niihau-kauai windward-kauai leeward-oahu north shore-oahu koolau-
olomana-molokai windward-molokai leeward-maui windward west-
maui leeward west-maui central valley-windward haleakala-
big island north and east-
340 pm hst tue nov 21 2017

...high surf warning in effect until 6 am hst friday...

the national weather service in honolulu has issued a high surf
warning, which is in effect until 6 am hst friday. the high surf
advisory is no longer in effect. 

* surf...20 to 30 feet along north facing shores and 10 to 15 
  feet along east facing shores of niihau kauai oahu molokai maui 
  and the big island.

* timing...building through the day on wednesday...peaking on
  thursday...and then declining on thursday night and friday.

* impacts...high...expect ocean water occasionally sweeping across
  portions of beaches, very strong breaking waves, and strong
  longshore and rip currents. breaking waves may occasionally 
  impact harbors making navigating the harbor channel dangerous.

precautionary/preparedness actions...
large breaking surf, significant shorebreak, and dangerous 
currents make entering the water very hazardous. anyone entering 
the water could face significant injury or death. boaters should 
be aware of an increased number of surfers and body boarders 
utilizing the harbor channel to access surfing areas.



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