Rain was falling across Southern California on Sunday, bringing some relief to thousands of firefighters who have been battling multiple major wildfires in the LA area.

Hughes Fire initially started 10:53 a.m. Jan. 22 in Los Angeles County. It has burned 10,425 acres after being active for six days. By Tuesday morning, the fire crew succeeded in containing 98% of the wildfire. The cause is, however, still being investigated.

Much-needed rain has begun to fall over Southern California, bringing relief to the drought-stricken region but also the threat of toxic runoff.

More than an inch of rain fell in many areas, loosening Los Angeles hillsides burned bare by the recent blaze near the Pacific Palisades neighborhood.

Southern California’s first significant storm of the season brought weekend downpours that aided firefighters but caused ash, mud and debris to flow across streets in wildfire-burned areas.