In just one week, over 100 tornadoes have swept through parts of the U.S., destroying dozens of homes and uprooting the lives of many people. Some of the affected regions include Oklahoma ...

(CNN) — Here’s some background information about tornadoes ... radar circulation called a mesocyclone. Supercells can also produce damaging hail, severe non-tornadic winds, unusually frequent ...

If a storm with these criteria is imminent, your local Weather Service office will issue a severe thunderstorm warning or a tornado warning ... component: the mesocyclone. A mesocyclone (or ...