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Yosemite fire 'size of Chicago'

A wildfire in Yosemite National Park in the US state of California has spread to almost 150,000 acres, according to fire service officials. A state of emergency has been declared for San Francisco after power lines servicing the city were threatened.

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State of emergency declared over Yosemite wildfire

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 edge of the Rim Fire burns near Berkeley Camp near Buck Meadows, California. Credit: 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.

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