How many tornadoes occur in the US each year?
Flexi Says:
Over the past few decades, an average of 1,244 tornadoes have occurred every year in the United States, which accounts for the vast majority of the world's tornadoes. Most tornadoes form in the spring and summer, when warm, humid air masses from the Gulf of Mexico are likely to meet cool, dry air masses from the Rocky Mountains, creating whirling storms.