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

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

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

"A strong Santa Ana Wind event is expected to develop Monday and last through at least Tuesday," the National Weather Service said.

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 Santa Ana winds fanning wildfires that have killed at least 25 people in Southern California and destroyed more than 10,000 houses, businesses and other structures in Greater Los Angeles are flaring up again.

A wind-driven wildfire charred dozens of acres in the sparsely developed northeastern reaches of San Diego County, damaging structures and forcing pre-dawn evacuations before crews could gain the upper hand on the flames Wednesday.

After a brief break on Sunday afternoon, another prolonged round of gusty Santa Ana winds is expected to develop, forecasters say.

President Donald Trump will visit southern California this week amid looming winds and threats of new flames with tens of thousands of acres torched and buildings destroyed, according to reports.

The National Weather Service has issued another rare Particularly Dangerous Situation warning in anticipation of Monday's Santa Ana wind event.

A new wildfire that erupted in northern Los Angeles County rapidly consumed over 10,000 acres as authorities warned of an "immediate threat to life."