Much of San Diego County under red flag fire weather warning

Santa Ana winds will raise the risk of wildfires across San Diego County Thursday and Friday.
(K.C. Alfred/The San Diego Union-Tribune)

Santa Ana winds expected to gust to 50 mph in local mountains

A red flag fire weather warning will be in effect throughout eastern San Diego County until to 9 a.m. Saturday due to stiff Santa Ana winds and very low humidity, according to the National Weather Service.

The winds begin to whip through the Borrego Springs and Palomar Mountain areas Thursday afternoon and were expected to peak early Friday. Forecasters say the winds will gust 30 mph to 50 mph in the mountains and 25 mph to 40 mph across inland valleys and foothills.

At the same time, the relative humidity inland will drop to the 10 percent to 15 percent range.

Through 8 p.m. Thursday, the wind had gusted to 40 mph in Fallbrook, 35 mph at Camp Pendleton and 29 mph at Alpine.


SDG&E has notified roughly 2,700 customers that it might have to temporarily turn off their power early Friday to prevent power lines from sparking and causing wildfires. The affected communities are mostly in Alpine, Julian, Jacumba, Ramona and Pala.

The weather service adjusted its temperature forecast late Thursday, saying that San Diego will get to 72 degrees on Friday — about four degrees higher than expected. The temperature will hit 73 on Saturday, and the region is expected to be in the 70s through most of next week. There is no substantial rain in the 10-day forecast.