Critical fire conditions are expected to continue through Friday. But rain could be on the way this weekend. Here's what to know.

The Santa Anas are expected to be most powerful Monday night into Tuesday. Fire services across the region say they are ready.

A rare Particularly Dangerous Situation warning has been issued for Southern California as a powerful and potentially damaging Santa Ana wind event​ is expected.

The Hughes Fire near Castaic, California, has burned over 5,000 acres, prompting evacuations and school closures.

After a weekend of reprieve allowing fire teams to continue making progress battling the deadly infernos burning in Los Angeles County, Southern California now faces another round of fire-fueling Santa Ana Winds Monday.

For the latest updates on the LA and San Diego fires, follow USA TODAY's coverage for Wednesday, Jan. 22. SAN DIEGO — Multiple wildfires broke out in San Diego County on Tuesday, prompting evacuation orders,

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.

The Los Angeles haven’t spread in nearly a week, but the return of the Santa Ana winds to full strength could cause problems.

Southern California will continue to face "dangerous fire weather conditions" including strong Santa Ana winds and extremely low humidity through later this week, forecasters said Tuesday.

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.

Much of inland San Diego County was whipped yet again by a strong Santa Ana wind event Monday into Tuesday, contributing to risky fire conditions as the region remains bone-dry.

The Santa Ana winds are expected to pick up again this week, making the Palisades and Eaton fires, among others, more difficult to contain as they continue to rage in Southern California.