- 11 updates
A giant wildfire burning at the edge of Yosemite National Park has consumed 293 square miles and is 23 percent contained, US fire officials have said.
At least 111 structures have been destroyed and around 4,500 others are under threat as well as water supplies, and iconic giant sequoia trees.
Forestry experts have said long intervals between wildfires and years of drought primed the Sierra Nevada mountains are contributing factors behind the blaze.
The California Air National Guard has released a video of it tackling the wildfire at Yosemite National Park, which is now one of the largest ever in California:
A wildfire raging in Yosemite National Park in the US has now burned 184,481 acres, making it making it one of the largest on record in California.
A total of 4,081 fire personnel have been sent to tackle the Rim Fire, which is still just 20 percent contained.
The US Forest Service said the blaze's growth potential was "extreme" and its cause is currently under investigation.
A wildfire in Yosemite National Park in the US state of California has become so large it can now be seen from space in Nasa satellite images
The Rim Fire has threatened two groves of giant sequoias that are unique in the region, prompting park employees to clear brush and set sprinklers around the huge trees.
While sequoias have a chemical in their bark to help them resist fire, they can be damaged when flames move through slowly.
The smoke from the wildfires in California has been pictured by an astronaut on the International Space Station.
NASA astronaut Karen L Nyberg has tweeted two pictures of the smoke.
A raging wildfire in Yosemite National Park has rained ash on the reservoir that is the chief source of San Francisco's famously pure drinking water, according to the Associated Press.
Utility bosses scrambled to send more water towards the metropolitan area before it became tainted as nearly 3,700 firefighters battled the 230-square-mile blaze, the biggest wildfire on record in California's Sierra Nevada.
"We're taking advantage that the water we're receiving is still of good quality," said Harlan Kelly, general manager of the city's Public Utilities Commission. "We're bringing down as much water as possible and replenishing all of the local reservoirs."
They reported modest progress, saying the fire was 20% contained.
California's fire service reports that the wildfire in Yosemite National Park and surrounding areas has now burned 149,780 acres - an area larger than the city of Chicago.
Firefighters have been trying to bring the flames under control since last week but have only contained 15 percent of the fire.
NBC Bay area reports that 23 structures gave been burned, but that 4,500 are threatened.
The wildfire raging around the edge of Yosemite National Park is threatening key electricity lines serving San Francisco. The fire has damaged the electrical infrastructure serving the city, and forced the some power lines to shut down. There have been no reports of electricity blackouts, so far.
The governor of California Jerry Brown has declared a state of emergency for San Francisco after power lines providing electricity to the city were threatened by a wildfire raging at the edge of Yosemite National Park, according to Reuters.
The fire has damaged the electrical infrastructure serving the city, and forced the San Francisco Public Utilities Commission to shut down power lines, the governor said in his declaration.