Yosemite fire impacts Nevadans more than 100 miles away; hazardous, unhealthy air warnings

The giant wildfire burning at the edge of Yosemite National Park has not only destroyed buildings and threatened water supplies, electricity and sequoias, it has also unleashed a smoky haze that has worsened air quality more than 100 miles away.

The plume from the Rim Fire in California triggered emergency warnings along parts of the eastern Sierra near Carson City, Nev.

School children were kept inside Tuesday for the second time in a week, people went to hospitals complaining of eye and throat irritation and officials urged people for the first time to avoid all physical activity outdoors.

The air quality index briefly surpassed the rare "hazardous" level east of Lake Tahoe before improving Tuesday afternoon.