![]() īy March 30, the Storm Prediction Center (SPC) introduced a moderate risk for severe weather for two distinct regions in the northern and southern sections of the main risk area, where significant, long-tracked tornadoes were expected. This made the environment favorable for the development of a strong, fast-moving squall line, and discrete supercell thunderstorms capable of large hail and tornadoes. In this region, a powerful mid to upper level trough was expected to eject and interact with an atmosphere containing elevated moisture given the moderate dew points across the area, and elevated low and high level jet streams. By March 29, large sections of Iowa, Illinois, Missouri, southwestern Indiana, Arkansas, the western Tennessee Valley, and Kentucky were all given an enhanced risk for severe weather. Additionally, over 211 injuries also occurred during the outbreak.Īs another significant tornado outbreak was taking place across the Southern regions of the United States, the Storm Prediction Center had already highlighted a large 15% contour for severe weather across much of the area, where conditions were expected to become increasingly favorable for another severe weather event. Tornadoes killed 27 people during the outbreak, and six other weather-related fatalities took place: five from straight-line winds and one indirect fatality during cleanup. This was also the most tornadoes in an outbreak since the 2011 Super Outbreak. That tally is surpassed only by the 1974 Super Outbreak with 148 in that 18-hour outbreak and the 2011 Super Outbreak with 219 in its busiest 24-hour period (although both of those outbreaks were far more prolific in the number of significant tornadoes produced). The outbreak ranks third worldwide for producing the most tornadoes in a 24-hour period, with 134 tornadoes occurring between 19:00 UTC March 31 – April 1. ![]() In all, 145 tornadoes touched down, 114 of them on March 31 alone. At certain points of the outbreak, over 20 simultaneous tornado warnings were active, with a total of 175 tornado warnings issued on March 31 and an additional 51 issued on April 1. Severe and tornadic weather also affected the Northeastern United States in the afternoon and evening of April 1, including a rare EF3 tornado that caused a death in Sussex County, Delaware. The strongest tornado was a low-end EF4 tornado that swept away homes on the west side of Keota, Iowa. One of these tornadoes was a high-end EF3 tornado that passed through the northern Little Rock metro, causing extensive damage and dozens of casualties. ![]() EF3 tornadoes in Arkansas, Tennessee, and Illinois prompted the issuance of tornado emergencies and multiple mass casualty incidents were declared for some of the hardest hit areas. Louis, Chicago, and Memphis metropolitan areas, all of which were hit by multiple rounds of severe squall lines and supercell thunderstorms that produced damaging winds, large hail, and tornadoes. Approximately 28 million people were placed under tornado watches, including multiple PDS tornado watches, from the evening of March 31 through the overnight hours into the morning of April 1. The Storm Prediction Center (SPC) issued a rare high risk for severe weather in two areas of the Mississippi Valley on March 31, the first high risk issuance since March 25, 2021. Part of the tornado outbreaks of 20–23 North American winterĪ widespread, deadly, and historic tornado outbreak affected large portions of the Midwestern, Southern and Eastern United States on the last day of March and the first of April, the result of an extratropical cyclone that also produced blizzard conditions in the Upper Midwest. Midwestern, Southern and Eastern United States Map of tornado warnings and confirmed tornadoes from the outbreak along with the EF4 Keota–Wellman, Iowa tornado.ġ00 mph (160 km/h) near Harlan, Indiana (non-tornadic winds)
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