Strong storms rolled in across 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 tracked across the region. A second warning blanketed Yellowhead County as the cell held together. Heavy rain caused flash flooding across low-lying areas of the metro. Whitemud Drive in west Edmonton ended up closed under standing water. Major arteries shut down as crews rushed to blocked intersections. Travel plans were thrown into chaos across the city, with drivers slogging through the sudden downpour.