With many parts of Los Angeles County still smoldering from wildfires, the expected rain this weekend would seem like a welcome relief. But how the rain falls could make the difference between a disaster respite or a disaster repeat.

The fires come as San Diego County mountains and valleys, along with other parts of Southern California, remain under a red flag warning.

On Friday at 12:59 p.m. a winter weather advisory was issued by the NWS San Diego CA valid from Saturday 4 p.m. until Monday 4 p.m.