"The Cascadia Subduction Zone ... is the only offshore earthquake zone [on the West Coast] capable of producing megathrust events, i.e., very large 'top 10' type earthquakes,’ said Synolakis, adding that Seattle is in far more danger than any spot south of the California-Oregon line for that kind of quake plus tsunami.” - Anthony Citrano

"... "The impact to Seattle could be devastating," he said...." - WoH: Professor MOTHRA

And there was an article on the SJ Mercury news site yesterday saying that a significant event on the Alaska-Aleutian fault could produce a tsunami that can potentially take out the Port of Oakland AND much of Alameda (where I live). - vicster.