A raging wildfire in California has led to the county’s governor declaring a state of emergency. The blaze is threatening power lines which provide electricity to San Francisco and has damaged the electrical infrastructure serving the city.
The so-called Rim-Fire has swept into Yosemite National Park raising concerns for what is one of the county’s main tourist attractions.
As yet there are no reports of any blackouts in the city which lies about 320 kilometres west of the national park which attracted nearly four million visitors last year.
Already four homes have been destroyed while a further four and a half thousand are threatened. There are fears the flames could reach the Hetch Hetchy Reservoir which provides water for 2.6 million customers in the San Francisco area.
The Rim- Fire is now the fastest-moving of 50 large wildfires spreading across the drought-parched American west.