A raging wildfire along the northwest edge of Yosemite National Park is gaining strength Saturday morning as firefighters scramble to protect nearby mountain communities.
The fire held steady overnight at nearly 200 square miles, but a spokesman for the California Department of Forestry and Fire Protection says firefighters didn't get their usual reprieve from cooler early morning temperatures Saturday.
The Rim Fire started in a remote canyon of the Stanislaus National Forest a week ago and is just 5 percent contained with more than 2,600 firefighters on the lines.
A half dozen aircraft are being used to battle the blaze.
The Yosemite Valley, the part of the park frequented by tourists and known around the world for such iconic sights as the Half Dome and El Capitan rock formations and Yosemite falls, remained open, clear of smoke and free from other signs of the fire that remained about 20 miles away.
But the blaze was reverberating around the region. It brought a governor's declaration of emergency late Friday for San Francisco 150 miles away because of the threat the fire posed to utility transmission to the city, and caused smoke warnings and event cancellations in Nevada as smoke blew over the Sierra Nevada and across state lines.
And the fire had established at least a foothold in Yosemite, with at least 17 of its 196 square miles burning inside the park's broad borders, in a remote area near Lake Eleanor where backpackers seek summer solace.