Red flag warnings are in effect across Southern California beginning Monday

Red flag warnings are in effect across Southern California beginning Monday

Red flag warnings will go into effect early Monday for much of Southern California, from Los Angeles to San Diego, due to strong Santa Ana winds, according to the National Weather Service.

The strong dry winds combined with warm temperatures and low humidity will lead to fire weather in the San Gabriel and Santa Monica mountains, as well as parts of the San Fernando Valley and Ventura County, according to the weather service. Inland areas of Orange County and all valley and mountain areas of San Bernardino and Riverside counties will also be affected.

“That’s pretty typical for this time of year,” said Sebastian Westerink, a meteorologist with the weather service in San Diego. “This is peak wind season in Santa Ana and I would say this is at least a moderate event.”

In the windiest corridors of Los Angeles and Ventura counties, gusts could reach up to 80 mph overnight Monday into Tuesday, officials said. Gusts between 40 and 60 mph are common and near San Diego in the mountains and passes winds could reach 65 mph.

The National Weather Service advises residents living near wildland interfaces to be prepared to evacuate in the event of a wildfire and to avoid outdoor fires.

“Any fires that develop are likely to spread rapidly… which would endanger life and property,” the said Warnings said. “There is an increasing risk that fire weather conditions will rival those of other recent historic fires, including the Mountain and Thomas fires.”

Temperatures will be cooler on the coast and throughout the interior on Monday, reaching the low 70s, Westerink said. According to the National Weather Service, humidity will be in the single digits, about 7% near San Diego and 5% near Los Angeles, with isolated levels as low as 2%.

The Santa Ana winds, which arise inland from cool, high-pressure air masses in the Great Basin, regularly impact Southern California this time of year and contribute to the start of wildfires. Dry fuel also increases the risk of wildfires, the National Weather Service said.

“This is a very common occurrence in early December,” said Mike Wofford, a meteorologist at the National Weather Service station in Oxnard. “It would be shocking if events like this didn’t happen.”

Red flag warnings remain in effect until early Wednesday.

Strong Santa Ana winds were blamed for the devastating mountain fire in Camarillo last month. The fire, which began Nov. 6 and burned for days, charred nearly 20,000 acres, destroyed 243 structures and damaged dozens more in surrounding communities in western Ventura County, according to data released by state fire officials.

The tally found the fire was the third most destructive wildfire in Southern California since at least 2013.

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