Alameda County issued a Red Flag warning for East Bay hills and interior valleys in an AC Alert Thursday.

The Red Flag warning, announced by the National Weather Service, will be in effect from Thursday at 5 p.m. to Friday at 11 p.m. due to “anticipated gusty offshore winds” and low humidity. There is increased potential for a fire to spread rapidly through the area, the alert said.

The alert further recommends, among other things, leaving one’s phone on to receive potential future alerts, reviewing an evacuation zone through Zonehaven for homes in the area and putting a bag with essentials by the front door.