Newly published tsunami inundation maps, detailing the areas most impacted around Grays Harbor and Willapa Bay in the event of a 9.0 magnitude offshore earthquake, can be found online at washingtonstategeology.wordpress.com/2018/03/26/newly-published-southwest-washington-tsunami-inundation-hazard-maps/.
Or you can go directly to dnr.wa.gov/publications/ger_ms2018-01_tsunami_hazard_southwest_washington.zip to view the full report and high resolution pdf versions of the maps.