Cajon Pass Fire: Blaze Closes Southbound I-15 Freeway in California

UPDATE: 3:42 p.m. EDT—​The San Bernardino National Forest shared on Twitter that the fire had spread to 50 acres and was at zero percent containment. Over 200 personnel were working on the fire, which the agency said was spreading rapidly and resistant to control.

Due to the spreading flames, the San Bernardino National Forest announced an advisory evacuation was in place for Mathews Ranch and structures north of the fire. During an advisory evacuation, residents are encouraged to prepare in the event they need to leave.

The agency also confirmed the fire was named Keenbrook Fire and not Kenbrook.

Original story:

A brush fire along the Cajon Pass in California prompted the closure of the southbound I-15 freeway on Wednesday.

As of 11:28 a.m. PDT, the brush fire, which has been referred to as both the Kenbrook Fire and Keenbrook Fire, had grown to 20 acres and was experiencing a moderate rate of spread, according to the San Bernardino County Fire Department. The fire caused the California Highway Patrol to close the southbound direction of I-15 at Highway 138 because smoke had begun to impact the freeway.

In a message on Twitter, Victor Valley Transit announced that one of its buses from Santa Barbara, California, to San Bernardino, California, was standing down because of the "rapidly spreading" fire causing the highway to close.

Along with the San Bernardino County Fire Department, the San Bernardino National Forest also responded to fight the blaze.

The cause of the fire was not immediately clear.

This is a developing story and will be updated as more information becomes available.

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A fire along the Cajon Pass in California prompted the closure of Interstate 15 on Wednesday. San Bernardino National Forest