Border 2 Fire initially started 2:31 p.m. Jan. 23 in San Diego County. After being active for 20 hours, it has burned 5,389.4 acres, an increase of 1,139 acres since the last update. A fire crew of 692 effectively contained 10% of the fire by Friday noon. The blaze's cause remains under investigation.

With many parts of Los Angeles County still smoldering from wildfires, the expected rain this weekend would seem like a welcome relief. But how the rain falls could make the difference between a disaster respite or a disaster repeat.

Firefighters are responding Wednesday to a brush fire in Rancho Bernardo. The fire started around 8:55 a.m. near Bernardo Center Drive and Camino del Norte, according to San Diego Fire-Rescue, which was responding alongside Poway Fire.

A new air quality alert has been issued for Los Angeles County until 7 p.m. local time "due to harmful particle pollution levels from windblown dust and ash." This pollution can embed deep into the lungs and cause health problems including heart disease symptoms,