Tornado Alley
It has also been asserted that there are numerous Tornado Alleys. In addition to the Texas/Oklahoma/Kansas core, such areas include the Upper Midwest, the lower Ohio Valley, the Tennessee Valley and the lower Mississippi valley. Some studies suggest that there are also smaller tornado alleys located across the United States.
List of United States tornadoes from January to March 2017
From January to March 2017, various weather forecast offices of the National Weather Service confirmed at least 399 tornadoes across the United States, activity well beyond climatological norms. Based on the 1991–2010 average, the first month of the year is expected to see 35 tornadoes, with 29 occurring in February and 80 forming throughout March. In 2017, however, the count for the first three months was 135, 70, and 194, respectively. Activity began with the development of an EF1 tornado north of Jasper, Texas at 15:03 UTC on January 2. The latest storm of the period was an EF1 that touched down southeast of Powellsville, North Carolina at 22:15 UTC on March 31. The strongest tornado, an EF4, carved a path of destruction from Perryville, Missouri to southwest of Christopher, Illinois. Meanwhile, the deadliest tornado of the period was of EF3 intensity that destroyed a mobile home park south of Adel, Georgia, killing 11 people.