A raging California mountain blaze that has already killed one firefighter grew over the weekend and bore down on Yosemite National Park, prompting the closure of some smoke-choked campgrounds and roads at the popular tourist destination.
The so-called Ferguson Fire, which started on July 13 in the Sierra National Forest, grew by more than 10 percent in size over the weekend, sending smoke billowing for miles and causing air quality alerts for parts of the San Joaquin Valley, officials said on Sunday.
"Air quality and visibility have been severely affected by smoke. Visitors should expect limited visibility and should be prepared to limit outdoor activities during periods of high concentration," Yosemite National Park said on its Twitter feed over the weekend.