Los Angeles County saw multiple wildfires erupt as "extremely critical fire weather" from dry conditions and Santa Ana winds threatened Southern California into Wednesday, and the National Weather Service warned the worst was yet to come.

Santa Ana winds are caused by strong high pressure over the Great Basin region of the West creating a pressure gradient that amps up winds through the mountains, foothills and sometimes valleys of Southern California. In this case, the winds are getting a major boost from a strong upper-level low pushing southward across the state.

While winds will be weaker on Thursday, another Santa Ana wind event is forecasted for Friday, with wind advisories likely in the Santa Clarita Valley to Point Mugu area from early morning to early afternoon, according to the NWS Los Angeles.