A Red Flag Warning has been extended for the northern end of the Sacramento Valley, including Marysville, Yuba City and Oroville, and stretches to the Clearlake area. The warning will stay in effect until noon today. At around 6 a.m., there were nearly constant lightning strikes in that area.
Read more from the National Weather Service.
A red flag warning is a warning issued by the National Weather Service to let firefighters know that conditions are ideal for wildfires.