Update Tuesday, 7:30 a.m.

Crews were able to get a better grip on the Alamo Fire overnight, and containment is now at 45 percent. The fire stayed at 28,926 acres overnight.

Update, 7 p.m.

The Alamo Fire remains at 28,926 acres, with an expected containment date of July 22, according to Cal Fire. On Monday, containment rose from 15 percent in the morning to 20 percent by evening.

More than 2,000 fire personnel are fighting the blaze, and 133 structures remain threatened. Fire activity was described as light Monday, and cooler temperatures and higher humidity helped firefighters in their suppression efforts, Cal Fire said.

Original story

The Alamo Fire east of Santa Maria grew about 5,000 acres overnight, jumping from 23,867 to 28,926 acres. Containment is still 15 percent, Cal Fire reported.

One structure has been destroyed, and 133 structures are threatened, according to Cal Fire. 1,664 fire personnel are fighting the blaze, which ignited Thursday. The cause is still under investigation.

There are still road closures in place: Highway 166 is closed from Highway 101 to new Cuyama, and Tepusquet Canyon Road is closed from Highway 166 to Santa Maria Mesa Road.

Mandatory evacuations are in place for Tepusquet Canyon; the Red Cross evacuation center is at Minami Center, 600 W. Enos St. in Santa Maria. For evacuation assistance, contact the Santa Barbara County Sheriff’s Office at 805-683-2724.

Yesterday, firefighters on the Central Coast were battling the Parkfield Fire near San Miguel, Stone Fire near Santa Margarita and the Whittier Fire near Lake Cachuma, and there are more than a dozen wildfires throughout California. A drop in temperature this week should assist crews.

Correction: A previous version of this story gave the wrong name for Tepusquet Canyon Road.