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New evacuations were ordered Tuesday as the Radford Fire burning in the San Bernardino mountains continued to grow.

The fire erupted a short distance from Big Bear Lake Monday afternoon and quickly spread to 300 acres.

Officials updated the burn area to 450 acres with no containment as of 7:30 a.m. Tuesday, San Bernardino National Forest officials tweeted.

A new evacuation order was issued Tuesday for the area from Pine Knot south to Skyline Road and from Knickerbocker west to Castle Rock. Evacuation orders issued Monday for areas from Glass Road to South Fork River Road remained in place.

An evacuation center has been set up at Big Bear High School at 351 Maple Ln. for those displaced by the fire.

Firefighters attacked the fire from air and ground Monday, and then continued the fight overnight.

“With nightfall upon us, flames from the fire are visible throughout the SanBernardino Valley. Firefighters will remained engaged throughout the night while deputies patrol evacuated areas,” San Bernardino County Fire tweeted.

State Route 38 had to be closed in both directions from Mill Creek to Lakewood as a result of the fire.

Video from ALERTWildfire cameras stationed near Big Bear Mountain Resort showed the resort’s snowmaking sprinklers activated in an apparent attempt to slow the spread of the encroaching fire.