The Santa Ana winds are dry, powerful winds that blow down the mountains toward the Southern California coast. The region sees about 10 Santa Ana wind events a year on average, typically occurring from fall into January. When conditions are dry, as they are right now, these winds can become a severe fire hazard.

Just a few years after the ozone hole was detected via satellite, the industrialized nations of the world, meeting in Montreal in 1987, adopted what is known as the Montreal Protocol.

Parts of Los Angeles, Orange, Riverside and San Bernardino counties all will be under a red flag warning beginning on Monday morning, the NWS said. The strongest Santa Anas are expected Tuesday morning.

With the two largest wildfires in Los Angeles County still mostly uncontained, the winds which drove their explosive growth have whipped up once again.

The winds fueling fires in Southern California are beginning to relax, but the forecast calls for their return next week.

A small amount of rain is in the forecast for the region beginning late Friday through early Saturday, a much anticipated change of weather.

Residents and first responders were on high alert for possible land movement in recent burn scar areas as a winter storm moves in.

An arson suspect was arrested in connection to a brush fire in Griffith Park after firefighters quickly put out the small blaze.

The Santa Ana wind forecast for Southern California has worsened, and forecasters now expect to issue a red flag fire weather warning starting Monday.

Southern California will continue to face "dangerous fire weather conditions" including strong Santa Ana winds ... Santa Monica Mountains, Santa Susana Mountains and western San Gabriel Mountains ...

As winds across the Southern California area are calmer than their peak and firefighters are making progress, the threat to the fire-weary region remains with Santa Ana winds expected to continue in the coming days.

The Angeles National Forest and the San Gabriel Mountains National Monument are closed to the public through Jan. 31 because of critical fire danger despite the recent rainfall, officials announced Monday.