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 moved across the region. Separate warning blanketed Yellowhead County as the cell kept its strength. Heavy rain triggered flash flooding across low-lying areas of the metro. Whitemud Drive in west Edmonton sat closed under standing water. Major arteries shut down as crews rushed to blocked intersections. Travel plans fell apart across the city, with drivers slogging through the sudden downpour.