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This weather radar image shows severe weather that affected Illinois and Indiana. The line of storms, pictured in red, shows the traditional bow echo pattern. Landspouts are also a type of non-supercell tornado. These formations have a very narrow funnel that looks like a rope. A landspout typically forms over land while a thunderstorm cloud is still building, but before the rotating updraft forms. These storms therefore tend not to be very strong. Waterspouts are very similar to landspouts except that they form over water and also tend to be of weaker strength. More about Tornadoes Tornadoes occur on almost all continents, including Africa, Asia, Europe, and South America. They even occur in Australia and New Zealand, and frequent tornadoes occur in Bangladesh and Argentina. However, most tornadoes occur in the United States.

This amazing video will tell you everything you need to know about how a tornado forms.

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What Makes a Tornado