The blazes - named Laguna, Sepulveda, Gibbel, Gilman and Border 2 - flared up on Thursday in Los Angeles, San Diego, Ventura and Riverside.

A wet pattern will bring periods of rain and showers to Southern California, dropping an inch or two in the Los Angeles region — the most to fall since mid-April. It will be key for firefighters continuing to battle flames.

Cooler, wet weather is forecast to bring moisture to the parched landscape and reduce the fire threat. But heavy rainfall could also trigger flash floods in burn scars.