Event narrative (NOAA)
Heavy winter rain caused a deep rooted debris flow to occur that covered highway 1. This slide has no estimated time for removal and has damage estimates well in to the millions.|http://www.mercurynews.com/2017/05/31/big-sur-coast-has-grown-13-acres-from-new-landslide/. https://www.usnews.com/news/us/articles/2017-05-23/massive-slide-covers-stretch-of-iconic-california-highway.
Other notable debris flow events in California
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.