What are California's Santa Ana winds?

FILE - Flags fly under heavy winds before sunset as a plume of smoke from the Franklin Fire rises over the ocean Tuesday, Dec. 10, 2024, in Malibu, Calif. (AP Photo/Damian Dovarganes,File)

Forecasters warned Southern California could see a 鈥渓ife-threatening, destructive鈥 windstorm this week, as powerful gusts and dropped humidity levels raise the risk for wildfires in parched areas still recovering from a recent destructive blaze.

Gusts could reach 80 mph (129 kph) across much of Los Angeles and Ventura counties as winds intensify Tuesday into Wednesday, the 香港六合彩挂牌资料 Weather Service said Monday. Isolated gusts could top 100 mph (160 kph) in mountains and foothills.

鈥淪cattered downed trees and power outages are likely, in addition to rapid fire growth and extreme behavior with any fire starts,鈥 the weather service office for Los Angeles said on X. 鈥淎reas not typically windy will be impacted.鈥

The weather service warned of downed trees, knocked over big rigs and motorhomes, dangerous conditions off the coasts of LA and Orange County, and potential delays at local airports. Public safety power shutoffs are being considered for nearly 300,000 customers across region, according to Southern California Edison's website.

Areas where gusts blowing across tinder-dry vegetation could create "extreme fire conditions鈥 include the charred footprint of last month's wind-driven , which damaged or destroyed 48 structures, mostly homes, in and around Malibu.

The blaze was one of nearly 8,000 wildfires that scorched more than 1 million acres (more than 404,600 hectares) in the Golden State last year.

Recent dry winds, including the notorious Santa Anas, have contributed to warmer-than-average temperatures in Southern California, where there's been very little rain so far this season. Meanwhile, up north, there have been .

The 鈥渆xtreme precipitation disparity鈥 between the northern and southern parts of the state is expected to persist throughout the winter, according to Daniel Swain, a climate scientist with the University of California, Los Angeles and the 香港六合彩挂牌资料 Center for Atmospheric Research.

The Northern California weather systems 鈥渉ave been relatively warm storms, too, maintaining overall warmer than average temperatures across nearly all of California in recent weeks,鈥 Swain wrote Saturday in an update on his website.

Southern California hasn't seen more than 0.1 inches (0.25 centimeters) of rain since early May. Much of the region has fallen into moderate drought conditions, according to the U.S. Drought Monitor.

The upcoming winds will act as an 鈥渁tmospheric blow dryer鈥 for vegetation, bringing a long period of fire risk that could extend into the more populated lower hills and valleys, Swain said during a Monday livestream.

Portions of San Diego County have seen the driest start to the season 鈥 and driest nine-month period overall 鈥 in over 150 years, Swain wrote.

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