© APAugust 30, 2013: In this photo provided by the U.S. Forest Service, a member of the Bureau of Land Management Silver State Hotshot crew from Elko, Nevada, walks through a burn operation on the southern flank of the Rim Fire near Yosemite National Park.
The 2-week-old Rim Fire moved up a spot on the state's list of large wildfires dating back to 1932 when it grew to 351 square miles -- an area larger than the cities of San Francisco, Oakland and San Jose combined, California Department of Forestry and Fire Protection spokesman Daniel Berlant said.
Although the fire still is growing, it was 45 percent contained as of Sunday.
Moister air slowed flames from advancing through brush and trees, giving firefighters room to set backfires, dig containment lines and to strengthen lines around threatened communities, fire spokesman Trevor Augustino.
He said it also helped that more than 4600 firefighters were brought in to battle the flames.
