Drought-ravaged Los Angeles, still battling the remnants of a series of devastating wildfires, will receive significant rainfall beginning Saturday but a new threat of flooding in burn-scarred areas has emerged.

Southern California’s first full rainy day of the winter has arrived. The day, months in the making, has brought steady storms across the region while the Southland experiences drought conditions. The mostly welcome rain began Saturday night and is expected to sustain until Monday evening.