Tornadoes in the United States
The Midwestern states are very prone to tornado activity, as they are part of "Tornado Alley." States included in the area that are hit by tornadoes the most are Oklahoma, Kansas, Missouri, Nebraska, Iowa, and South Dakota. The Midwestern States are often hit by tornadoes during the late spring and early summer months, especially the months of May and June. This is due to the aforementioned air mass moving northward into the Midwest and combining with another air mass that move southward from Canada. This creates unstable air, creating the potential for storms to strike the most during these months. The frequency begins to decrease in the middle of the summer, as the air mass moves northward into the Great Lakes states.
Tornadoes of 2016
On April 26 and 27, a large but weak tornado outbreak occurred across a large portion of the Great Plains. On the afternoon of April 26, the Storm Prediction Center issued a PDS tornado watch for most of the state of Oklahoma as well as portions of central Texas. A 10% hatched risk area for tornadoes extended from Nebraska to Texas, and multiple intense tornadoes were expected. However, the wind profile that evening did not support sustained supercell thunderstorms. As a result, only scattered weak tornadoes occurred, though EF1 tornadoes caused minor to moderate damage in parts of Oklahoma City and Tulsa. Weak tornado activity continued the following day in Nebraska, Iowa, Illinois, Missouri, and Kentucky, including an EF0 and an EF1 that caused minor damage in the western part of Omaha. An early morning EF0 blew a large tree over onto a mobile home near Tomball, Texas, killing an elderly woman inside. Overall, the outbreak produced at least 57 tornadoes and one death.