It's burning near Alum Rock Park. The fire is 75 percent contained.
No homes are threatened. Investigators are not yet sure how it started.
#SierraFire burning in hills east of San Jose now 124 acres, 75% contained. Crews will work through the night. pic.twitter.com/G3qHVW2osw
— CARosePhoto (@fullfirstalarm) July 31, 2016
#SierraFire [update] east of San Jose (Santa Clara County) is now 124 acres & 75% contained. pic.twitter.com/rWdlkGXo1D
— CAL FIRE (@CAL_FIRE) July 31, 2016
