Firefighters were making progress Friday against Northern California forest fires that burned several homes and forced thousands to flee communities even as authorities prepared for a hot, crowded Fourth of July weekend that could bring the threat of new blazes.Three wildfires near the towering Mount Shasta volcano an hour's drive from the Oregon border have burned around 60 square miles of land.Damage was reported at the Salt Fire, which broke out Wednesday near Interstate 5 and prompted evacuations for some roads in Lakehead, an unincorporated community of around 700 people north of the city of Redding.A reporter for the Redding Record Searchlight saw at least a dozen buildings destroyed south of Lakehead, including homes, garages and outbuildings, the paper reported.Alexis Hohimer and her son, Michael, ended up at a Red Cross shelter in the city of Shasta Lake after authorities ordered their trailer park to evacuate early Thursday."So all we can do is hope and pray right now. Keep our fingers crossed," she said.The Salt Fire was slightly larger early Friday, covering nearly 8 square miles, and was 5% contained, said Adrienne Freeman, a spokeswoman for Shasta-Trinity National Forest. She said official damage assessments will be made by local authorities. No building damage was reported from two other northern fires, which erupted as California and the rest of the U.S. West is enduring a historic drought tied to climate change."Fuel conditions this year are looking a lot more like late August than early July," Freeman said.To the north, the Lava Fire burning partly on the flanks of Mount Shasta covered more than 37 square miles but was 27% contained. Several thousand residents of Lake Shastina were allowed to return home late Thursday.Firefighters were doing mop-up on the western side of the fire and making good progress on the most active eastern portion, fire official Pat Bell said in a morning briefing.To the northeast, the Tennant Fire in the Klamath National Forest grew slightly to more than 15 square miles but progress was also reported there. Mop-up began on the western flank while the east side remained active. Evacuation orders and warnings continued in nearby areas.The blazes erupted during an extreme heat wave in the U.S. West. The heat has since moderated but temperatures in the Mount Shasta area were still expected to reach nearly 100 degrees over the weekend.Arizona, New Mexico and Utah have been forced to battle wildfires and California is bracing for what some experts fear will be one of its worst fire seasons yet. Last year, California wildfires scorched more than 6,562 square miles of land, the most in its recorded history. And just three years ago, a fire in Butte County in Northern California killed 85 people and largely destroyed the town of Paradise.This year, many of California's national parks have restrictions on campfires, cooking and smoking because of fire risks in the hot, dry summer. The parks are bracing for large crowds over the holiday weekend.Fire authorities throughout California also have stepped up campaigns urging people not to use fireworks to celebrate the Fourth of July, citing both the explosive dangers and the threat of wildfires in the withering conditions."The fuels are bone dry," Los Angeles County Fire Chief Daryl Osby said. "We are extremely concerned about the use of fireworks of all kinds."___Antczak reported from Los Angeles.