cascade range and earthquakes along the coast. >> this looks relatively far away from seattle. should people take comfort in it that it's not right there? >> it is relatively far away from seattle. there won't be that much shaking, perhaps, or the shaking will be somewhat attenuated. the problem here might be a coastal tsunami just like we saw in chile. >> let's go to jakarta, indonesia. the whole region is called the ring of fire. this is obviously where we saw the tsunami a little bit further up north. >> this is part of what seismologists call the -- >> they have a line running down -- >> they have a line running down the center of sumatra. this is the island of java. the earthquake in 2004 occurred right around up here, and this basically, this whole region has volcanos. it has earthquakes and we know there have been large earthquakes in the past. >> how can you tell that a tsunami is the bigger threat