Fanned by strong winds, the wildfires have killed at least 24 people and swept through 40,000 acres in the Greater Los Angeles area.

The threat of powerful wind gusts combined with bone-dry humidity in Los Angeles on Wednesday could pose a severe test for firefighters who have been battling to keep monstrous fires in check since last week.

Fires across the Los Angeles area have killed at least 25 people. The Palisades and Eaton wildfires continue to burn out of control in Southern California.

Millions of Southern Californians were on edge as a final round of dangerous fire weather was forecast for the region on Wednesday, along with a rare warning of a “Particularly Dangerous Situation” for an area near where two massive blazes have killed at least 25 and destroyed thousands of homes.

Wednesday, 1:00 a.m. PSTThe Auto Fire—which has burned 61 acres—is 47% under control, according to Cal Fire’s most recent update. Progress on the two biggest fires, however, remains slow as the containment of the Palisades Fire—which has burned 23,

This is really just the last push of these winds here today," National Weather Service meteorologist Todd Hall said.