Huge plumes of smoke fill the sky as California wildfire continues to grow

Tuesday, August 27, 2013, 10:40 AM -

A massive wildfire in California has grown, but firefighters are making progress.

Officials say the blaze near Yosemite National Park is now 20 percent contained. 

They say they expect no water disruptions from ash raining on the main reservoir that supplies San Francisco with drinking water.

Crews are having a hard time getting the upper hand on the massive fire, which began on August 17, as inaccessible terrain, strong winds and arid conditions are hampering containment efforts.

(NASA)

With files from The Canadian Press