Strong storms swept through Edmonton late Saturday, pushing very large hail near the city limits. A tornado warning was issued for Stony Plain, west of Edmonton, as rotating clouds advanced across the region. A second warning targeted Yellowhead County as the cell ramped up. Heavy rain sparked flash flooding across low-lying areas of the metro. Whitemud Drive in west Edmonton was left closed under standing water. Major arteries shut down as crews responded to blocked intersections. Travel plans fell apart across the city, with drivers slogging through the sudden downpour.