Lilac Fire was a fire that burned in northern San Diego County , California , United States , and the second-costliest one of multiple wildfires that erupted in Southern California in December 2017 . The fire was first reported on December 7 , 2017 , burned , and destroyed 157 structures , before it was fully contained on December 16 . The fire cost at least $ 8.9 million ( 2018 USD ) , including $ 5 million in firefighting expenses and property damage , and an additional $ 3.9 million in cleanup and erosion control costs . The fire threatened the communities of Bonsall , Oceanside , Vista , Fallbrook , and Camp Pendleton . During the fire , an estimated 10,000 residents were forced to evacuate , while a total of over 100,000 residents were forced to or advised to evacuate . On December 7 , the Lilac Fire also cut the power to 20,000 people
multiple wildfires
December 2017 Southern California wildfires
Lilac Fire