A fast-moving wildfire burning in the Shasta-Trinity National Forest, near Mt. Shasta and the town of Weed, in Siskiyou County has exploded in size overnight.The Lava Fire is now burning 13,330 acres, Cal Fire said Tuesday, a jump from 1,446 acres just a day before. The fire is 20% contained.A wildfire strike team from Santa Clara Unit has been deployed to help fight the flames, according to Cal Fire.Lighting is believed to be the cause of the Lava Fire, according to fire officials.Mandatory evacuation orders were in place for Lake Shastina, Juniper Valley, the Mount Shasta Subdivision, and surrounding areas.On Tuesday morning, Governor Gavin Newsom announced that California had secured a federal grant to help agencies responding to the Lava Fire.--KRCR contributed to this report.