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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 August 28, 1884, a tornado outbreak, including a family of least five strong tornadoes, affected portions of the Dakota Territory within present-day South Dakota. Among them was one of the first known tornadoes to have been photographed, an estimated F4 on the Fujita scale, that occurred near Howard and exhibited multiple vortices. Another violent tornado also occurred near Alexandria, and three other tornadoes were also reported. A sixth tornado also occurred in present-day Davison County. In all, the tornadoes killed at least seven people and injured at least two others. Contemporary records and survivors' recollections indicate that the storms were F3 or F4 on the Fujita scale, but cannot currently be verified, as official records begin in 1950.
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 deadliest on record to ever affect the state of Tennessee, with 66 of the fatalities associated with this outbreak occurring in the state; this surpasses the 60 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 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.
On Tuesday, February 23, 1965, a small, localized tornado outbreak affected the south of the U.S. state of Florida. At least four confirmed tornadoes touched down between 10 a.m.–1 p.m. EST (15:00–18:00 UTC); the strongest tornado moved through the Fort Lauderdale area and produced F3 damage on the Fujita scale, injuring six people. In addition, a F1 tornado also moved through northern Broward and southern Palm Beach counties. Two tornadoes also affected Lee County, producing F2 and F1 damage, respectively.
On June 18–19, 1972, Hurricane Agnes generated the third-deadliest tropical cyclone-related tornado outbreak in the United States since 1900, as well as the deadliest such tornado outbreak on record in Florida. The outbreak lasted about 38 hours and produced at least 19 confirmed tornadoes, though some studies suggested nearly a dozen more. Two of the tornadoes killed a total of seven people and were not classified as tornadoes by the National Weather Service until 2018. In Florida alone, the outbreak inflicted at least 135 injuries and destroyed 15 homes, while 119 homes received damage. Statewide, 217 trailers were destroyed and 196 trailers incurred damage. Additionally, six businesses were destroyed, while six others were damaged.
On May 4–6, 1960, a large tornado outbreak sequence affected parts of the Midwestern and Southern United States. The severe weather event produced at least 71 confirmed tornadoes, including five violent tornadoes in the U.S. state of Oklahoma. Major tornado activity began on the afternoon of May 4, with strong tornadoes affecting the Red River Valley and the Dallas-Fort Worth Metroplex. Two tornadoes struck parts of southern Oklahoma, causing significant damage to the Konawa and Soper areas. In all, at least 22 tornadoes formed between the early afternoon and late evening hours, with two more tornadoes forming early on May 5, shortly after midnight CDT. A much more significant tornado outbreak began on the afternoon of May 5 and continued overnight, spreading from eastern Oklahoma into portions of southern Missouri and Central Arkansas. At least 35 tornadoes developed between 6:00 a.m. CST on May 5–6, including a long-tracked F5 that struck rural areas in Northeastern Oklahoma and killed five people. Two other tornadoes killed 21 people in and near Sequoyah County in the eastern portion of the state. Other strong tornadoes affected the Little Rock metropolitan area early on May 6 in Arkansas. In all, the tornado outbreak sequence killed 33 people and injured 302.
On April 20 – 22, 1912, a large tornado outbreak affected portions of the High Plains, the Upper Midwest, and the Southern United States, including portions of what is now known as the Dallas–Fort Worth metroplex. The severe-weather event produced at least 32 tornadoes, at least nine—and possibly 10 or more—of which were violent tornadoes, all of which rated F4 on the Fujita scale. Powerful tornado activity was distributed from the Great Plains to South Carolina. The first day of the outbreak occurred on April 20 and produced numerous strong to violent tornadoes across parts of North Texas, Oklahoma, and Kansas. A second day of intense tornadoes occurred on April 21, with several strong to violent tornadoes across Illinois and Indiana. The final day, April 22, produced an F4 tornado in Georgia as well. The entire outbreak killed 56 people, and was followed days later by another intense tornado outbreak on April 27. That outbreak killed about 40 people, mostly in Oklahoma. Both outbreaks produced a combined total of nine F4 tornadoes in Oklahoma alone.
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 nine 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.
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". Weather and Forecasting. 21 (1): 86–93. 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. 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.
