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Tornado outbreak of March 16–17, 1942

1942 tornado outbreak in the United States From Wikipedia, the free encyclopedia

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On March 16–17, 1942, a deadly late-winter tornado outbreak struck a large area of the Central and Southern United States, killing 149 people and injuring at least 1,312. At least five states reported violent tornadoes, from Illinois and Indiana south to Mississippi, beginning with an F4 tornado in the morning in Illinois. Intense activity spread south to the Gulf Coast and north to the Michigan–Indiana border as the day went on. Seven violent tornadoes were reported, one of which was a powerful F5 in Illinois. A long-tracked F4 tornado family in Mississippi claimed 63 lives as well, becoming the deadliest event of the outbreak. Another long-lived F4 in Tennessee killed 15 more people, and a series of intense tornadoes caused 24 other deaths in Kentucky. The outbreak also produced 18 tornadoes that caused at least one death—ranking eighth on a list of similar events since 1880 by tornado researcher Thomas P. Grazulis.[1][note 2]

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Confirmed tornadoes

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Prior to 1990, there is a likely undercount of tornadoes, particularly E/F0–1, with reports of weaker tornadoes becoming more common as population increased. A sharp increase in the annual average E/F0–1 count by approximately 200 tornadoes was noted upon the implementation of NEXRAD Doppler weather radar in 1990–1991.[11][note 4] 1974 marked the first year where significant tornado (E/F2+) counts became homogenous with contemporary values, attributed to the consistent implementation of Fujita scale assessments.[15][note 3]

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March 17 event

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Avalon–Cascilla–Otoucalofa–Tula, Mississippi

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This long-tracked tornado family caused at least 19 deaths in Leflore County as it leveled many small homes. Three of the fatalities occurred near Itta Bena and Greenwood. In Carroll County, the tornado caused five additional deaths near Avalon. The tornado also impacted and hurled a school bus for 50 yd (46 m); 11 children and the driver sustained injuries. As it traversed Grenada County, the tornado struck another school bus and killed a child. Nearby, the tornado obliterated a house and claimed three more lives. Three other people died in another home near Cascilla in Tallahatchie County. The tornado generated its worst damage in Otoucalofa, known then as O'Tuckalofa, near Water Valley. In this area, the tornado destroyed 10 sq mi (26 km2) of timber and killed 19 people, including the school superintendent, whose home and school were leveled and whose car was moved 300 yd (900 ft). Northwest of Tula, five more deaths occurred, four of which took place in a single home. In all, the tornado injured 500 people and caused $600,000 in losses.[24]

Barrville–Lacon, Illinois

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This violent tornado remains the most recent F5 or EF5 tornado on record in Central Illinois. It touched down east of Kickapoo and impacted areas near Alta and on the northwestern outskirts of Chillicothe. The tornado subsequently struck the settlement of Barrville, beside the Illinois River, before crossing the river to the south of Sparland. Near the river, the tornado caused one fatality. The tornado intensified to its peak intensity as it entered Lacon; although it bypassed the business district, the tornado destroyed a quarter of the town, which inclusively totaled about 60 homes, several of which were entirely swept away. Three deaths occurred in Lacon. About 3 mi (4.8 km) farther on to the northeast, the tornado produced F5-level damage to a farmhouse and killed three people there. The tornado also lofted debris from Lacon for a total distance of up to 25 mi (40 km). Two schools in Lacon received extensive damage as well, and a home in town was uplifted and deposited in a neighboring yard. Along the entire path, about 70 injuries occurred, along with $600,000 in losses.[33]

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Notes

  1. All losses are in 1942 USD unless otherwise noted.
  2. An outbreak is generally defined as a group of at least six tornadoes (the number sometimes varies slightly according to local climatology) with no more than a six-hour gap between individual tornadoes. An outbreak sequence, prior to (after) the start of modern records in 1950, is defined as a period of no more than two (one) consecutive days without at least one significant (F2 or stronger) tornado.[2]
  3. The Fujita scale was devised under the aegis of scientist T. Theodore Fujita in the early 1970s. Prior to the advent of the scale in 1971, tornadoes in the United States were officially unrated.[3][4] Tornado ratings were retroactively applied to events prior to the formal adoption of the F-scale by the National Weather Service.[5] While the Fujita scale has been superseded by the Enhanced Fujita scale in the U.S. since February 1, 2007,[6] Canada used the old scale until April 1, 2013;[7] nations elsewhere, like the United Kingdom, apply other classifications such as the TORRO scale.[8]
  4. Historically, the number of tornadoes globally and in the United States was and is likely underrepresented: research by Grazulis on annual tornado activity suggests that, as of 2001, only 53% of yearly U.S. tornadoes were officially recorded. Documentation of tornadoes outside the United States was historically less exhaustive, owing to the lack of monitors in many nations and, in some cases, to internal political controls on public information.[12] Most countries only recorded tornadoes that produced severe damage or loss of life.[13] Significant low biases in U.S. tornado counts likely occurred through the early 1990s, when advanced NEXRAD was first installed and the National Weather Service began comprehensively verifying tornado occurrences.[14]
  5. All dates are based on the local time zone where the tornado touched down; however, all times are in Coordinated Universal Time and dates are split at midnight CST/CDT for consistency.
  6. The listed width values are primarily the average/mean width of the tornadoes, with those having known maximum widths denoted by ♯. From 1952 to 1994, reports largely list mean width whereas contemporary years list maximum width.[16] Values provided by Grazulis are the average width, with estimates being rounded down (i.e. 0.5 mi (0.80 km) is rounded down from 880 yards to 800 yards).[17][18]
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References

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