SEATTLE -- A mudslide at Richmond Beach in Shoreline sent two Sounder commuter trains back to Everett Friday morning.

Sound Transit said both the 1701 and 1703 trains returned to Everett for passengers to board back-up bus service to Seattle because of the 6 a.m. slide about three miles south of Edmonds.

Sound Transit's Bruce Gray told KIRO 7 Eyewitness News the slide is 5 feet deep and 17 feet long across one set of tracks.

Crews expect to have the tracks cleared later Friday morning, but Amtrak and Sound Transit Sounder passenger trains are blocked for 48 hours as a precaution.

Burlington Northern Santa Fe spokesman Gus Melonas said freight trains continue to roll past the slide on the parallel track, which is open.