The U.S Forest Service is conducting a series of controlled burns Friday, with more possibly scheduled through the weekend.
The controlled burns are happening in the San Dimas Experimental Forest at Johnstone Peak. About two to three acres have burned so far, with 20 to 30 acres expected to be finished by Friday evening, said Chris Brenzel of the USFS.
The controlled burns began at 8:29 a.m. Friday, with significant activity scheduled around 5 or 6 p.m., Brenzel said.
The controlled burns are being done to create a field break for community defense and to protect wilderness and watershed values, Brenzel said.
If the weather is favorable, additional burns would be performed Saturday and Sunday further down the ridge, Brenzel said.