The fireball, which streaked through the darkening skies over Alberta and Saskatchewan at about 5:30 p.m. Calgary time, likely weighed between 1 and 10 tons and shone brightly enough to be seen over an area 435 miles (700 kilometers) wide.
"It was somewhere between the size of a chair to the size of a desk," said Alan Hildebrand, a planetary scientist at the University of Calgary and a coordinator of a fireball reporting service.
http://www.msnbc.msn.com/id/27848645/
Video of Meteor
http://www.msnbc.msn.com/id/21134540/vp/27848709#27848709