Alan Hildebrand with the University of Calgary says the asteroid probably shed meteorites as it flew through the night sky.
Cameras in Calgary and central Saskatchewan captured part of its four-second flight that ended near North Battleford about 8:40 p.m.
Witnesses lucky enough to catch a fleeting glimpse went on Twitter to report the multi-hued flash.
Hildebrand says the last fireball to cause such a stir blazed across all three prairie provinces in November 2008.
It's believed that 10-tonne meteor scattered more than 10,000 rock pieces, most of them in farm fields around Buzzard Coulee near Lloydminster.