Firefighters were getting the upper hand on the Canyon Crest Fire, burning between Jurupa Valley and Fontana. As of Sunday evening, fire officials said the brush fire had burned 284 acres but is 95% contained.

More than 200 firefighters battled the blaze and by Friday afternoon had managed to contain 15% of it, officials said. Containment refers to what portion of a wildfire's perimeter has been surrounded by a natural or human-made control line.

Authorities say those who require additional time to evacuate and those with pets and livestock should leave immediately.

The fire was first reported shortly after 5:30 p.m. Thanksgiving Day, near Canyon Crest Drive and Weeping Willow Lane.

The Canyon Crest Fire, which started on Thanksgiving, is burning near Jurupa Hills in San Bernardino and Riverside counties.

An evacuation warning was issued in Riverside County after a vegetation fire broke out in Fontana Thursday afternoon.

The Canyon Crest Fire, which began Thanksgiving evening to the east of Los Angeles, has now reached 250 acres.

Canyon Crest Fire initially started 8:04 p.m. Nov. 28 in Riverside, San Bernardino County. It has burned 284 acres after being active for 35 hours, an increase of 30 acres since the last update. A fire crew of 74 succeeded in containing 50% of the fire as of Saturday morning.