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 video showing the dramatic moment a four-year-old boy was rescued from the devastating mudslide in Washington state, which has killed at least 16 people, has been posted online.
The clip shows a helicopter hovering inches above the ground while a volunteer steps off the aircraft to rescue the stranded youngster.
The first rescue team to respond to the mudslide on Saturday 22 March were onboard the Snohomish County helicopter.
The team rescued eight people in the aftermath of the mudslide, including the four-year-old boy.
A devastating mudslide in Washington state has buried houses and cars, while 16 people are so far reported to have lost their lives.Read the full story ›
Authorities have recovered two more bodies after a mudslide in the US state of Washington, taking the total death toll to 16, fire chief Travis Hots said at a news conference.
Rescue teams believe they have located an additional eight bodies but they have not been recovered.
As many as 176 people are still thought to be missing after a huge mudslide in the north-west American state of Washington on Saturday.
Fourteen bodies have so far been recovered - but it is feared the number killed will rise.
ITV News correspondent John Ray reports:
President Obama has asked Americans to send their thoughts and prayers to Washington state, as search operations continue following a mudslide.
Mr Obama has also declared a state emergency, ordering aid for the community and national agencies to co-ordinate relief efforts.
"We hope for the best, but we recognise this is a tough situation," he added.
The death toll from the US mudslide near Seattle is expected to increase, as crews continue to search through the debris-laden field both on the ground and in the air.
Fourteen people have been confirmed dead after the disaster in Washington state, but over 170 remain unaccounted for.
Authorities are working from a list of 176 potentially missing people, although many of those names are likely to be duplicates, with a list being generated by officials that will be available later.
US mudslide latest: rescue teams say no more survivors found. Three days in and death toll expected to rise beyond present number of 14
US mudslide: authorities expect missing estimate of 176 to come down during the day
US mudslide: national guard now called in to help rescue and recovery operation.
Families and friends of those missing in the Snohomish County mudslides continue to wait for news. Over 170 people are still unaccounted for.
Barbara Welsh, a mudslide victim whose husband is still missing, continues to wait for any news at the local police station.
Sisters Helen and Irene located their chocolate lab, Buddy, who as stuck in the rubble, but still alive. Buddy is now home, save for a few cuts and bruises.
US mudslide. Police now saying they're trying to trace 176 people who might be missing. Deadtoll stands at 14 in Washington state disaster