Moderate Santa Ana winds are expected to start late Wednesday evening in Los Angeles and Ventura counties, bringing hot, dry conditions to the region and increasing the risk for fast-moving wildfires. Strong northeast winds will first blow through the mountains of eastern Ventura and western L.A. counties, including the Santa Monica Mountains, and advance to the coasts and valleys Thursday morning, according to the National Weather Service. Temperatures are expected to be in the low- to mid-80s on Thursday and mid- to upper 80s on Friday. Santa Ana wind events occur when high surface pressure builds over the Great Basin region with lower pressure off the Southern California coast, according to the weather service. As the wind squeezes through mountains and canyons, wind speed increases, the weather service said.

Source: Los Angeles Times October 07, 2019 02:15 UTC