CAL Fire crews battling Pass Fire in Merced County, currently at 50% containment

FRESNO, Calif. (KFSN) -- CAL Fire crews are battling a large blaze in Merced County.

The Pass Fire quickly spread to 2,192 acres Monday morning, and containment is now at 50%.

The fire is burning off Highway 152 and Dinosaur Point Road, along the Pacheco Pass.

Residents have been reporting smoky conditions impacting several North Valley cities.

So far, no structures are threatened. The cause of the fire is under investigation.