![]() ![]() There apparently was persistent ridging in the western U.S. The late winter to early spring of 1925 was warmer and drier than normal over much of the central United States. ĭuring a six-year review study of the Tri-State tornado published in 2013, new surface and upper air data was obtained and meteorological reanalysis was utilized, adding significantly to knowledge of the synoptic and even mesoscale background of the event. Although not officially rated by NOAA, the Tri-State Tornado is recognized by most experts (such as Tom Grazulis and Ted Fujita ) as an F5 tornado, the maximum damage rating issued on the Fujita scale. ![]() Modern meteorological re-analysis has suggested that the extremely long path length and lifespan reported in historical accounts are perhaps more plausibly attributed to multiple independent tornadoes belonging to a tornado family, rather than a single, continuous tornado. The 219-mile-long (352 km) track left by the tornado, as it crossed from southeastern Missouri, through southern Illinois, and then into southwestern Indiana, is also the longest ever recorded. history and the second-deadliest registered in world history. The outbreak included the Tri-State tornado, the deadliest tornado in U.S. In addition to confirmed tornadoes, there were undoubtedly others with lesser impacts, the occurrences of which have been lost to history. The outbreak generated several destructive tornadoes in Missouri, Illinois, and Indiana on the same day, as well as significant tornadoes in Alabama and Kansas. In all, at least 751 people were killed and more than 2,298 were injured, making the outbreak the deadliest tornado outbreak, March 18 the deadliest tornado day, and 1925 the deadliest tornado year in U.S. On March 18, 1925, one of the deadliest tornado outbreaks in recorded history generated at least twelve significant tornadoes and spanned a large portion of the midwestern and southern United States. Midwestern and southeastern United Statesġ Most severe tornado damage see Fujita scaleĢ Time from first tornado to last tornado Over $17 million (1925 USD) at least $1.4 billion (1997 USD) Weather conditions and atmospheric phenomena, including severe thunderstorm winds, hail, and tornadoes, observed on March 18, 1925Ĥ + 1⁄ 2 in (11 cm) at Lexington, Kentucky ![]()
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