Overview
- The Pass Fire, which broke out Sunday near Altamont Pass Road northeast of Livermore, prompted a large response from Cal Fire and Alameda County crews.
- Cal Fire first estimated the blaze at 3 to 5 acres, then Alma Helitack updated the size to about 80 acres within roughly an hour as moderate winds pushed the flames.
- Cal Fire reported forward progress was stopped around 1:30 p.m., and containment reached about 30 percent.
- Firefighters remain on scene to mop up hot spots and strengthen containment lines, according to Cal Fire.
- Officials asked drivers to avoid the area and use caution because emergency vehicles and firefighting equipment are working along nearby roads, and the wind‑prone Altamont Pass can speed grass-fire growth.