Firefighters are battling a 30-acre brush fire in the Tonner Canyon area above Chino Hills.
The blaze, which firefighters dubbed the Grand Fire, started just before 7:15 p.m. at Grand Avenue and Pleasant Hill Drive near Grand Avenue Park, [according to Cal Fire](https://www.fire.ca.gov/incidents/2026/5/13/grand-fire/)/San Bernardino County Fire Department crews.
At around 8:15 p.m., Chino Valley Fire District officials [issued evacuation orders](https://www.facebook.com/reel/3350273261800407) for:
* Mill Street Drive
* Falling Star Lane
* Valley View Lane
* Sweet Grass Lane
An evacuation center was established at the Chino Hills Community Center, which is located at 14250 Peyton Drive.
Firefighters also closed Chino Hills Parkway at Falling Star and Country Walk to the public.
The cause of the fire remains under investigation as firefighters work to get the upper hand. Both ground crews and water-dropping aircraft were working to quell the flames.
No injuries have been reported and no structures have been damaged.
_This is a developing story. Check back for details._
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