Crews battling 'Hollow Fire' in the Altamont hills

ALAMEDA COUNTY, Calif. (KTVU) - Crews from multiple fire agencies are working to extinguish a vegetation fire off West Corral Hollow Rd, southwest of Tracy in San Joaquin County. The fire, which began around 3 p.m. Wednesday, is burning near the Alameda County line.

As of 7:30 p.m. Wednesday, the fire is 283 acres in size, according to Cal Fire. The fire is 50% contained, up from 30% containment at 5 p.m. Cal Fire says the acreage has been reduced to 283 acres from 500+ acres due to better mapping. 

At 6:30 p.m., Cal Fire reported the size of the fire increased to 500+ acres with 30% containment.

At 6 p.m., Cal Fire reported the size of the fire increased to 450 acres with 30% containment.

At 5 p.m., Cal Fire reported the size of the fire to be 350+ acres with 20% containment.

Cal Fire reports that as of 4 p.m., the fire is still actively burning, according to a Tweet. ​​Additional air and ground resources are responding, including Alameda County Fire dept. and the California Dept. of State Parks.

Earlier in the afternoon Wednesday, CHP had closed Tesla Rd in Livermore and Corral Hollow on the Tracy side due to the fire.