Firefighters on Tuesday held the line against two massive wildfires that have ravaged parts of Los Angeles for the past week, even as desert winds and a parched landscape presented extremely hazardous conditions.

Dangerous Santa Ana winds are expected to return to the Los Angeles area this week, potentially fueling the growth of new and existing wildfires, according to FOX Weather.

The winds fueling Southern California wildfires form when a high-pressure system develops over the Great Basin in Utah and Nevada