1915 North Saskatchewan River Flood of 1915, the worst flood in Edmonton history
2012 A derecho struck the eastern United States, leaving at least 22 people dead.
You don’t always need a tornado to have destruction from Mother Nature. Sometimes a lot of destruction can come from straight line winds called derecho’s. These long-lived winds, straight line winds are associated with fast-moving thunderstorms and can bring widespread destruction, heavy rains and flash flooding. They are hurricane force winds most often occurring in June, July and August.