 On January 8, 2018, a winter storm began moving ashore in California, bringing heavy rain to Southern California and prompting mandatory evacuations in parts of Los Angeles, Santa Barbara, and Ventura Counties, over potential mudslides in areas affected by wildfires.The storm intensified on the following day, with at least of rain falling over the two-day period, before the rainfall ended on January 9, causing several major mudflows.On January 12, 2018, the U.S. Forest Service declared the Thomas Fire 100 percent contained, at 281,893 acres.