Details have emerged of the panicked 911 calls made by residents in Snohomish County during the first few moments of the landslide.
One could be heard shouting: "I have a big emergency! Its a house, there has been a big landslide!"
Another says: "Hundreds of trees have fallen outside my house."
A devastating mudslide in Washington state has buried houses and cars, while 16 people are so far reported to have lost their lives.
As many as 108 people are listed as missing two days after a mudslide hit a small village near Seattle.