From the latest weather alert:Swells along the coast will likely build to 16 to 18 feet Tuesday through Wednesday night... likely causing building surf along the surf zone. Rising River flows in combination with a full moon and
the highest tide of the month Wednesday and Thursday mornings could lead to tidal overflow and minor flooding near bays and estuaries.
The large west swell and very strong Ebb currents will also result in very rough bar conditions... especially on the Columbia River bar where 20 to 22 foot seas and breaking waves are possible Wednesday. The large seas and strong currents will also increase the risk of rip currents along the coast.
(the photo is from the Columbia River Bar Pilots)