A mega-tsunami in the Pacific north-west? It could be worse than predicted, study says

Scientists find the size of the outer wedge' of a faultline can magnify a rupture's impact, worrying news for a fault running from Vancouver Island to northern California

Scientists have long predicted a giant 9.0-magnitude earthquake that reverberates out from the Pacific north-west's Cascadia fault and quickly triggers colossal waves barreling to shore.

But what if these predictions were missing an important piece of information - one that, in certain scenarios, could tell an even more extreme story?