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The Fujita scale, or Fujita–Pearson scale, is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determined by meteorologists and engineers after a ground or aerial damage survey, or both; and depending on the circumstances, ground-swirl patterns, weather radar data, witness testimonies, media reports and damage imagery, as well as photogrammetry or videogrammetry if motion picture recording is available. The Fujita scale was replaced with the Enhanced Fujita scale (EF-Scale) in the United States in February 2007. In April 2013, Canada adopted the EF-Scale over the Fujita scale along with 31 "Specific Damage Indicators" used by Environment Canada (EC) in their ratings.
An extremely rare wintertime tornado outbreak affected the Midwestern United States on January 24, 1967. Of the 30 confirmed tornadoes, 13 occurred in Iowa, nine in Missouri, seven in Illinois, and one in Wisconsin. The outbreak produced, at the time, the northernmost tornado to hit the United States in winter, in Wisconsin, until January 7, 2008. The tornadoes formed ahead of a deep storm system in which several temperature records were broken. The deadliest and most damaging tornado of the outbreak struck Greater St. Louis at F4 intensity, killing three people and injuring 216.
From April 2–3, 1956, a large, deadly tornado outbreak affected the Great Plains, parts of the South, and the upper Midwest in the contiguous United States, especially the Great Lakes region. The outbreak produced at least 55 tornadoes, including an F5 that devastated the Grand Rapids metropolitan area in the U.S. state of Michigan on April 3. It was one of three tornadoes to move across southwest Lower Michigan on that day. A fourth tornado struck north of the Manistee area, in the northern part of the peninsula. The Hudsonville–Standale tornado killed 18 and injured 333. It remains the fourth deadliest tornado on record in Michigan and is the most recent F5 on record there. Several other deadly, intense, long-tracked tornadoes also occurred during the outbreak. In addition to the fatalities in Kansas, Oklahoma, Michigan and Berlin, Wisconsin, three people were killed in Tennessee, one person in Kentucky and two more people in Wisconsin. In total, 39 were killed during the entire event.
A violent severe weather outbreak struck the Southeast on April 4–5, 1977. A total of 22 tornadoes touched down with the strongest ones occurring in Mississippi, Alabama, and Georgia. The strongest was a catastrophic F5 tornado that struck the northern Birmingham, Alabama, suburbs during the afternoon of Monday, April 4. In addition to this tornado, several other tornadoes were reported from the same system in the Midwest, Alabama, Georgia, Mississippi and North Carolina. One tornado in Floyd County, Georgia, killed one person, and another fatality was reported east of Birmingham in St. Clair County. In the end, the entire outbreak directly caused 24 deaths and 158 injuries. The storm system also caused the crash of Southern Airways Flight 242, which killed 72 and injured 22.
On Monday, April 8, 1957, a widespread tornado outbreak struck the Southeastern United States, particularly the Carolinas, and was responsible for seven deaths and 203 injuries across the region. Most of the activity occurred on either side of the Piedmont, including portions of the Cumberland Plateau. At least 18 tornadoes occurred, including several long-tracked tornado families, one of which included a violent tornado that was retrospectively rated F4 on the Fujita scale. Besides tornadoes, the outbreak also generated other severe weather phenomena such as large hail.
On May 24–25, 1957, a tornado outbreak primarily affected the Western High Plains, Central Great Plains, and Central Oklahoma/Texas Plains of the United States. 45 tornadoes touched down over the area, most of which took place across northern and western Texas, in addition to southern Oklahoma. Overall activity initiated over eastern New Mexico and spread northeastward as far as southwestern Wisconsin. The strongest tornado, which occurred in southern Oklahoma on May 24, was assigned a rating of F4 near Lawton. Anomalously, some tornadoes touched down during the early morning hours, rather than late afternoon or early evening, when daytime heating typically peaks.
On March 21–22, 1952, a severe tornado outbreak generated eight violent tornadoes across the Southern United States, causing 209 fatalities—50 of which occurred in a single tornado in Arkansas. In addition, this tornado outbreak is the second deadliest on record to ever affect the state of Tennessee, with 66 of the fatalities associated with this outbreak occurring in the state; this is only surpassed by the 90 fatalities from a tornado outbreak in 1909, and in terms of fatalities is well ahead of both the 1974 Super Outbreak and the Super Tuesday tornado outbreak, each of which generated 45 and 31 fatalities, respectively. The severe weather event also resulted in the fourth-largest number of tornado fatalities within a 24-hour period since 1950. To date this was considered the most destructive tornado outbreak in Arkansas on record.
On March 21–22, 1932, a deadly tornado outbreak struck the Midwestern and Southern United States. At least 38 tornadoes—including 27 deadly tornadoes and several long-lived tornado families—struck the Deep South, killing more than 330 people and injuring 2,141. Tornadoes affected areas from Mississippi north to Illinois and east to South Carolina, but Alabama was hardest hit, with 268 fatalities; the outbreak is considered to be the deadliest ever in Alabama, and among the worst ever in the United States, trailing only the Tri-State tornado outbreak in 1925, with 751 fatalities, and the Tupelo–Gainesville outbreak in 1936, with 454 fatalities. The 1932 outbreak is believed to have produced 10 violent tornadoes, eight of which occurred in Alabama alone.
The March 1875 Southeast tornado outbreak was a deadly tornado outbreak that affected portions of the Southern United States from March 19–20, 1875. At least 19 tornadoes were recorded, including seven that were destructive enough to be rated F4 by Thomas P. Grazulis. The worst damage and most of the deaths occurred in Georgia. Most of the damage appears to have been the result of two tornado families that moved along parallel paths 12 to 15 mi apart through parts of Georgia and South Carolina. These families each consisted of numerous long-tracked, intense tornadoes. The deadliest tornado of the outbreak was an estimated F4 that killed 28–42 people in and near Sparta, Georgia, and Edgefield, South Carolina, on March 20. A separate F4 that followed a similar trajectory may have killed as many as 30. In all, this outbreak killed at least 96 people, injured at least 377, and caused at least $650,000 in losses.
A deadly tornado outbreak devastated parts of Louisiana and Tennessee on February 11–13, 1950. The outbreak covered about a day and a half and produced numerous tornadoes, mostly from East Texas to the lower Mississippi Valley, with activity concentrated in Texas and Louisiana. Most of the deaths occurred in Louisiana and Tennessee, where tornadoes killed 25 and 9 people, respectively. Several long-lived tornado families struck the Red River region of northwestern Louisiana, especially the Shreveport–Bossier City area. One of the tornadoes attained violent intensity, F4, on the Fujita scale and caused eight deaths, including six at the Shreveport Holding and Reconsignment Depot near Barksdale Air Force Base. It remains one of the top ten deadliest tornadoes on record in the state of Louisiana, in tenth place. Also in Louisiana, two other destructive tornadoes on parallel paths killed 16. Seven additional deaths occurred across the border in East Texas. Nine people died in a tornado in western Tennessee as well. In all, the entire outbreak killed at least 41 people and left 228 injured. Also, several long-tracked tornadoes recorded in the outbreak likely contained more, shorter-lived tornadoes.
On April 18–20, 1880, a tornado outbreak impacted the Midwestern United States, producing numerous strong tornadoes, killing at least 166 people, and injuring more than 516 others. The outbreak generated five violent tornadoes, including three long-tracked F4 tornadoes in Missouri that killed at least 144 people. Two of the tornadoes followed parallel paths and occurred simultaneously near Springfield, one of which devastated the town of Marshfield, causing 92 fatalities there. Other deadly, intense tornadoes occurred in the Great Lakes region and in Arkansas, including another F4 tornado that destroyed a third of El Paso, Arkansas, killing four or more people.
On April 9, 1919, a tornado outbreak occurred in the Southern Great Plains of the US, producing numerous strong tornadoes and killing at least 92 people, mainly in portions of North and East Texas. The entire outbreak occurred overnight and produced at least seven intense, deadly tornadoes, the deadliest of which was a long-tracked, extremely violent F4 in East Texas that killed 24 people and injured 100 others. A separate F4 long-tracker in the same region killed 17 others and injured 60 more. A deadly F3 also claimed nine or more lives in southern Oklahoma, and a long-lived F3 in East Texas crossed into Arkansas, killing eight. Several of the tornadoes in this outbreak may have been families of two or more twisters.
On November 7–8, 1957, a significant tornado outbreak affected portions of the Southern United States, particularly the Golden Triangle of Southeast Texas and parts of Acadiana in Louisiana. The severe weather event inflicted 12 deaths and more than 200 injuries, especially in the vicinity of Beaumont and Port Arthur, Texas. The most intense tornado of the outbreak, retrospectively rated F4 on the Fujita scale, struck the town of Orange, Texas, killing one person, injuring 81 others, and causing $11⁄2 million in losses. The deadliest tornado of the outbreak was an F3 that killed four people northwest of Carencro, Louisiana. The costliest tornado of the outbreak, also rated F3, caused $2.3 million in losses in the town of Groves, Texas, killing a few people there. Other intense tornadoes occurred as far east as Mississippi and North Carolina. In all, at least 28 tornadoes were confirmed, yet others were likely present as well.
This page documents the tornadoes and tornado outbreaks of 1949, primarily in the United States. Most recorded tornadoes form in the U.S., although some events may take place internationally. Tornado statistics for older years like this often appear significantly lower than modern years due to fewer reports or confirmed tornadoes.
Several destructive tornadoes struck the Southeastern United States, primarily along and east of the Lower Mississippi Valley, on February 13, 1952. Multiple intense tornadoes touched down throughout the day, three of which were killers. The deadliest and most destructive tornado of the outbreak was a violent F4 that touched down in south-central Tennessee, killing three people and injuring 44 others. A similarly destructive tornado—albeit of weaker, F2 intensity—formed from the same storm as the preceding F4 and became the second costliest of the outbreak. Another intense tornado affected the Mississippi embayment near Manila, Arkansas, injuring five people, and a pair of deadly F3s in Alabama claimed a combined two lives. In all, the outbreak killed five people and injured 102 others.
A deadly tornado outbreak produced at least 14 destructive tornadoes across Kansas, Louisiana, and Arkansas on Monday, January 3, 1949. The worst of the outbreak was a deadly, devastating and violent (estimated) F4 tornado that tore though Warren, Arkansas. Part of a multi-state family, the tornado killed at least 55 people, a majority of the deaths in the outbreak, and is now tied with the Fort Smith tornado from 1898 as the deadliest in Arkansas history. In addition, a pair of deadly F3s in Louisiana, along with a few other strong tornadoes in Arkansas, claimed five more lives. Overall, a total of 60 or more people were killed from the outbreak, and over 500 sustained injuries.
From April 5–8, 1954, a tornado outbreak sequence affected portions of the Central and Southern United States, primarily the Upper Midwest. The U.S. states of Illinois, Iowa, Missouri, and Wisconsin were hardest hit by tornadoes. The first day of the severe weather event featured three intense tornadoes along the Missouri–Iowa border, including a long-tracked F4 that obliterated rural farmsteads. The deadliest tornado of the sequence, retroactively rated F3, struck Illinois a few days later, killing one person and injuring 13 others. Other strong tornadoes hit Kansas, Indiana, Michigan, and Georgia during the sequence. In all, the event resulted in 22 injuries.
On March 24–25, 1954, a small-but-intense tornado outbreak affected portions of the Central and Southern United States, killing two people and injuring 11. The outbreak generated 18 significant tornadoes, including a deadly, violent event, retroactively rated F4, in Texas County, Missouri. Another intense tornado, rated F3, injured two people in a rural part of Barry County, also in Missouri. An F2 tornado in Benton County, Missouri, injured four. In addition, an F1 tornado in Collin County, North Texas—in the Dallas–Fort Worth metroplex—injured four more. At least four tornadoes also occurred in or near Greater St. Louis, causing locally extensive damage, and a quartet of strong tornadoes hit Oklahoma, with a few more F2s striking Arkansas.
From April 30–May 1, 1949, a tornado outbreak swept eastward across the United States, beginning over the Great Plains. The severe weather event claimed 10 lives and inflicted over 100 injuries. It produced several deadly tornadoes, mostly in Oklahoma, including a pair that killed three each on April 30. The most intense tornado of the outbreak, retroactively rated a violent F4, tracked across parts of the Oklahoma City metropolitan area that day. A deadly F3 the following day claimed a life in Louisiana as well. This outbreak alone set an official monthly record of tornadoes to date in Oklahoma.
From May 20–22, 1949, a large-scale tornado outbreak affected portions of the continental United States, killing several dozen people and injuring hundreds more. Generating at least 66 tornadoes, the severe weather event produced 51 or more significant—F2 or stronger—tornadoes, half a dozen of which were retroactively rated F4 by tornado expert Thomas P. Grazulis. One of the largest on record prior to the start of official data in 1950, the outbreak included many tornado families and unrecorded or weak tornadoes, so its actual total was likely considerably higher than noted here. Newspaper headlines mentioned an "army" of tornadoes in Kansas on May 20. More than 100 tornadoes in all, mainly weak, may have formed over the Great Plains that day; Grazulis was able to find 40 just in Kansas "with little effort".
References
- 1 2 3 4 Heidorn, Keith C. (1999). "Tom Grazulis: A Different Breed of Storm Chaser". Weather People and History. The Weather Doctor. Retrieved 2014-04-04.
- ↑ Grazulis, Thomas P. (1993). Significant Tornadoes 1680-1991: A Chronology and Analysis of Events. St. Johnsbury, VT: The Tornado Project of Environmental Films. ISBN 1-879362-03-1.
- 1 2 Henson, Bob (3 June 2018). "Coming Soon: An Update to the Definitive Book on U.S. Tornadoes". Weather Underground. Retrieved 2019-05-02.
- 1 2 Grazulis, Tom; Doris Grazulis. "About Us". The Tornado Project. Retrieved 2014-04-04.
- ↑ Verbout, Stephanie M.; Brooks, Harold E.; Leslie, Lance M.; Schultz, David M. (2006). "Evolution of the U.S. Tornado Database: 1954–2003" (PDF). Weather and Forecasting. 21 (1): 86–93. Bibcode:2006WtFor..21...86V. doi:10.1175/WAF910.1.
- ↑ Maas, Malcolm; Supinie, Timothy; Berrington, Andrew; Emmerson, Samuel; Aidala, Ava; Gavan, Michael (2024). "The Tornado Archive: Compiling and Visualizing a Worldwide, Digitized Tornado Database". Bulletin of the American Meteorological Society. 105 (7): E1137–E1152. Bibcode:2024BAMS..105E1137M. doi: 10.1175/BAMS-D-23-0123.1 .
- ↑ Doswell, Charles A. III; Thomas P. Grazulis (14–18 Sep 1998). "A Demonstration of Vortex Configurations in an Inexpensive Tornado Simulator" (PDF). 19th Conf Severe Local Storms. Minneapolis, MN: American Meteorological Society. pp. 85–88.
- ↑ Significant Tornadoes 1680-2019
- 1 2 3 Grazulis, Thomas P. (2023). Significant Tornadoes 1974–2022. St. Johnsbury, Vermont: The Tornado Project. p. 637. ISBN 978-1-879362-01-7.
- 1 2 Grazulis, Thomas (29 August 2023). "The Outbreaks Section". Tornado Project. Archived from the original on 29 August 2023. Retrieved 29 August 2023.
