The deadly Eaton Fire in Altadena and Pasadena is 45% contained Wednesday, while red flag warnings of critical fire danger will be in place over the burn area — and much of the Southland — through 6 p.

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.