Residents in burn areas should remain on high alert as Southern California prepares for what is forecast to be the heaviest storm of the season so far, and which could prompt evacuations, officials said Wednesday,

Two significant storms are hitting two different parts of the country at the same time as a frenzied weather pattern shows no signs of stopping.

Crews have rushed to clear out basins designed to catch mud, rocks and other debris from tumbling into neighborhoods as damaging rains approach.

With heavy rain bringing the risk of dangerous debris flows, the Los Angeles Fire Department has announced evacuation warnings — and mandatory evacuation orders for some specific addresses — in areas recently burned by wildfires.

A flood watch is in effect for Los Angeles as a storm continues to soak Southern California. The incoming rain has forced officials to issue evacuation orders in LA County and voluntary evacuation warnings in Orange County.