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whus46 kmfr 172230

coastal hazard message
national weather service medford or
230 pm pst wed jan 17 2018

...extremely high and dangerous surf conditions this evening
   through early friday morning...

.surf will increase dramatically beginning this evening, with 
breaker heights peaking at 30 to 35 feet thursday. surf will 
remain elevated thursday night, then will gradually subside into
the weekend.

south central oregon coast-curry county coast-
230 pm pst wed jan 17 2018

...high surf warning remains in effect from 10 pm this evening to
   4 am pst friday...

* waves and surf...breaker heights will increase to 25 to 30 ft
  tonight and peak at 30 to 35 ft thursday. surf will begin to
  subside thursday night, but will remain elevated through friday

* timing...a long period of dangerous surf conditions is 
  expected. breaker heights will be commonly above 25 feet 
  tonight through friday morning. surf conditions will be at 
  their worst late tonight through thursday. 

* impacts...waves will run up much higher on the beaches than 
  normal. these waves will be powerful and can sweep people off 
  jetties and other exposed rocks. they can also easily move 
  large logs and other beach debris. bar crossings and the surf 
  zone will be especially dangerous due to strong currents and 
  breaking waves. 

* view the hazard area in detail at 

precautionary/preparedness actions...

a high surf warning indicates that dangerous, battering waves
will pound the shoreline. this will result in life-threatening
conditions. stay off jetties and piers since they can be quickly
inundated by the heavy surf. or...better yet...just stay away.


whus46 kpqr 172204

coastal hazard message
national weather service portland or
204 pm pst wed jan 17 2018

...significant surf and beach erosion likely tonight through

.a 25 to 30 foot swell train will reach the coast late tonight
and peak late thursday morning. this event appears to be similar 
to, or slightly stronger, than the december 2015 event when waves
ran much higher on the beaches and impacted numerous low lying 
structures adjacent to beaches and harbors.

north oregon coast-central oregon coast-south washington coast-
204 pm pst wed jan 17 2018

...coastal flood warning remains in effect from midnight tonight
to midnight pst thursday night...

* seas...west swell of 27 to 32 feet with dominant period 17-19
  seconds. peak wave heights from around 4 am through noon

* tides...high tide is forecast to be 8.5-9.5 feet between 
  midnight and 2 am thursday and 9.5-10.5 feet between noon and 
  2 pm thursday. 

* high surf impacts...breaking waves of 35-45 feet and parallel to
  the coastline will send water much further up beaches and
  jetties than normal. structures and roads located immediately at
  beach level will potentially be flooded or impacted by debris.
  many beaches, jetties, and rocky out croppings will be covered 
  by deep water. 

* coastal flooding impacts...higher than normal tides and large
  seas will result in beach erosion and some flooding of low lying
  locations along the coast. some areas include willapa bay and
  vicinity, seaside, nehalem, tillamook and florence,  
  particularly during the high tide midday thursday. 

* river flows...tidal overflow flooding of inland areas is 
  possible but low river flows may limit impacts. 

precautionary/preparedness actions...

a coastal flood warning means that flooding is occurring or
imminent. coastal residents in the warned area should be alert
for rising water, and take appropriate action to protect life and
property. visitors should remain off beaches and avoid narrow
access areas where escape routes could be cut off by rising



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