Local news is reporting that the debris is at least 130 feet wide but 180 feet deep!
Looking at King5 on the PC. The thing is over a square mile in area (5000 x 5000 sq. feet plus).
They have 18 missing. The voices they heard last night they tried to reach but debris and mud is too unsafe for rescuers after they made an attempt to get to where they thought they heard them. A reminder for other events - the police, fire, etc. will not always be there to help you. Not that one can do anything about a mudslide of course, but other events such as bad weather, riots, etc. that might befall us.
Two small neighborhoods were wiped out, as well as the homes along the main road. And any cars on the road.