Alta Fire Erupts in Antelope Valley

CAL FIRE said the Alta Fire broke out at about 1:06 p.m. on Thursday, May 21, near 230th Street West and Avenue C on the Los Angeles-Kern county line, east of Neenach. The fire grew to about 335 acres as crews from Los Angeles and Kern counties responded in dry, windy conditions in the Antelope Valley. CBS Los Angeles reported the fire was burning in the Lancaster area south of the Kern County line. By 6:45 p.m., CAL FIRE said all evacuation orders had been dropped and the fire was holding at 334 acres. ### Where did the fire start, and how large did it get? CAL FIRE listed the fire's location as 230th Street West and Avenue C, east of Neenach, in both Los Angeles and Kern counties. The agency's incident page said the fire was first posted at 2:38 p.m. Thursday and gave the initial size at 335 acres. CBS Los Angeles reported the blaze erupted around 1 p.m. in the Lancaster area. That placed the fire in the western Antelope Valley, near the county line and well north of the main Los Angeles basin. ### Were evacuations ordered? CAL FIRE said evacuation warnings were in place when the incident was first posted Thursday afternoon. The agency did not list active mandatory evacuation orders on its latest update, and at 6:45 p.m. it said all evacuation orders had been dropped. The change meant the immediate threat to nearby homes and roads had eased by Thursday evening, based on CAL FIRE's incident status. Residents in the area were still being directed to official incident and evacuation maps for any renewed warnings. ### What did firefighters say about conditions on the ground? The 335-acre estimate and the evacuation warnings pointed to a fast-moving initial burn in open terrain west of Lancaster. Local coverage from Hometown Station said the fire was threatening structures as firefighters responded Thursday afternoon. Dry vegetation and the Antelope Valley's exposure to wind have contributed to several fast-moving brush fires in the region this month, according to recent local fire coverage and National Weather Service warning reports for the area. CAL FIRE did not immediately publish a containment figure on the incident page excerpts available Thursday. ### Which agencies were involved? CAL FIRE identified the incident as burning in Kern and Los Angeles counties, indicating a multi-agency response near the county line. CBS Los Angeles described Los Angeles County fire crews as battling the blaze. The location near Neenach matters operationally because fire engines, air support and evacuation alerts can involve agencies on both sides of the county boundary. CAL FIRE's statewide incidents page is the main public tracker for fires of 10 acres or more. ### Do officials know what caused the Alta Fire? CAL FIRE said the cause of the Alta Fire is under investigation. The agency did not name an ignition source in its Thursday updates. That leaves open whether investigators will classify the fire as vehicle-related, utility-related, accidental or natural. Fire agencies in California often update cause findings after crews secure the perimeter and investigators can examine the origin area. ### What should residents watch next? CAL FIRE's next updates will likely focus on containment, acreage revisions and any reopening or renewed warnings if conditions change overnight. The agency's incident page remained the official public source for the Alta Fire as of Thursday evening. Los Angeles County residents can also monitor county emergency alerts and evacuation zone maps for any changes tied to the western Antelope Valley. CAL FIRE said Thursday night that the fire remained at 334 acres and that the investigation into the cause was continuing.