On March 18, 1925, one of the deadliest tornado outbreaks in recorded history generated at least 12 significant tornadoes and spanned a large portion of the midwestern and southern United States. In all, at least 751 men, women and children were killed and more than 2,298 were injured, making the outbreak the deadliest tornado outbreak in U.S. 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 addition to confirmed tornadoes, there were undoubtedly others with lesser impacts, the occurrences of which have been lost to history.
The 1974 Super Outbreak was the second-largest tornado outbreak on record for a single 24-hour period, just behind the 2011 Super Outbreak. It was also the most violent tornado outbreak ever recorded, with 30 violent tornadoes confirmed. From April 3–4, 1974, there were 148 tornadoes confirmed in 13 U.S. states and the Canadian province of Ontario. In the United States, tornadoes struck Illinois, Indiana, Michigan, Ohio, Kentucky, Tennessee, Alabama, Mississippi, Georgia, North Carolina, Virginia, West Virginia, and New York. The outbreak caused roughly $600 million USD in damage. The outbreak extensively damaged approximately 900 sq mi (2,331 km2) along a total combined path length of 2,600 mi (4,184 km). At one point, as many as 15 separate tornadoes were occurring simultaneously.
On April 10–12, 1965, a historic severe weather event affected the Midwestern and Southeastern United States. The tornado outbreak produced 55 confirmed tornadoes in one day and 16 hours. The worst part of the outbreak occurred during the afternoon hours of April 11 into the overnight hours going into April 12. The second-largest tornado outbreak on record at the time, this deadly series of tornadoes, which became known as the 1965 Palm Sunday tornado outbreak, inflicted a swath of destruction from Cedar County, Iowa, to Cuyahoga County, Ohio, and a swath 450 miles long (724 km) from Kent County, Michigan, to Montgomery County, Indiana. The main part of the outbreak lasted 16 hours and 35 minutes and is among the most intense outbreaks, in terms of tornado strength, ever recorded, including at least four "double/twin funnel" tornadoes. In all, the outbreak killed 266 people, injured 3,662 others, and caused $1.217 billion in damage. In 2023, tornado expert Thomas P. Grazulis created the outbreak intensity score (OIS) as a way to rank various tornado outbreaks. The 1965 Palm Sunday tornado outbreak received an OIS of 238, making it the fourth worst tornado outbreak in recorded history.
A derecho is a widespread, long-lived, straight-line wind storm that is associated with a fast-moving group of severe thunderstorms known as a mesoscale convective system.
The Tornado outbreak sequence of April 1996 was a series of tornado outbreaks that occurred across a large area of eastern North America over a three-day period between April 19 and April 21, 1996. A total of 118 tornadoes touched down in the Great Lakes, Midwest and Southeast region over the three-day period, killing six people and becoming the most notable outbreaks of the year.
The tornado outbreak of January 1–2, 2006, was one of the largest tornado outbreaks ever recorded in the month of January. The outbreak affected much of the Central and Southern United States and produced 20 tornadoes. The tornadoes caused considerable damage in the states of Kentucky and Georgia. There were no tornado related fatalities and only minor injuries were reported.
The Corn Belt derecho was a progressive derecho which affected a large area of the central United States on June 29, 1998. In the morning, thunderstorms, including a supercell, developed over South Dakota and tracked into central Iowa. As the thunderstorms reached central Iowa, a strong rear-inflow jet developed which caused the thunderstorm to take on a different characteristic, becoming a derecho. It traveled more than 600 miles in about ten hours, causing more than $125 million worth of widespread damage destruction, especially to crops, and was responsible for power outages to nearly a half a million people.
On on June 7–8, 1984, a significant severe weather and tornado event took place across the central United States from North Dakota to Kansas. The tornado outbreak produced several significant tornadoes including an F5 tornado which traveled through Barneveld, Wisconsin, in the early hours of June 8. The entire outbreak killed at least 13 people across three states including 9 in Barneveld alone.
The tornado outbreak sequence of June 3–11, 2008 was a series of tornado outbreaks affecting most of central and eastern North America from June 3–11, 2008. 192 tornadoes were confirmed, along with widespread straight–line wind wind damage. Seven people were killed from a direct result of tornadoes; four in Iowa, two in Kansas, and one in Indiana. Eleven additional people were killed across five states by other weather events including lightning, flash flooding, and straight-line winds. Severe flooding was also reported in much of Indiana, Wisconsin, Minnesota and Iowa as a result of the same thunderstorms, while high heat and humidity affected much of eastern North America; particularly along the eastern seaboard of the United States from New York City to the Carolinas.
Tornadoes are more common in the United States than in any other country or state. The United States receives more than 1,200 tornadoes annually—four times the amount seen in Europe. Violent tornadoes—those rated EF4 or EF5 on the Enhanced Fujita Scale—occur more often in the United States than in any other country.
From May 3 to May 11, 2003, a prolonged and destructive series of tornado outbreaks affected much of the Great Plains and Eastern United States. Most of the severe activity was concentrated between May 4 and May 10, which saw more tornadoes than any other week-long span in recorded history; 335 tornadoes occurred during this period, concentrated in the Ozarks and central Mississippi River Valley. Additional tornadoes were produced by the same storm systems from May 3 to May 11, producing 363 tornadoes overall, of which 62 were significant. Six of the tornadoes were rated F4, and of these four occurred on May 4, the most prolific day of the tornado outbreak sequence; these were the outbreak's strongest tornadoes. Damage caused by the severe weather and associated flooding amounted to US$4.1 billion, making it the costliest U.S. tornado outbreak of the 2000s. A total of 50 deaths and 713 injuries were caused by the severe weather, with a majority caused by tornadoes; the deadliest tornado was an F4 that struck Madison and Henderson counties in Tennessee, killing 11. In 2023, tornado expert Thomas P. Grazulis created the outbreak intensity score (OIS) as a way to rank various tornado outbreaks. The tornado outbreak sequence of May 2003 received an OIS of 232, making it the fourth worst tornado outbreak in recorded history.
This page documents the tornadoes and tornado outbreaks of 2012. Extremely destructive tornadoes form most frequently in the United States, Bangladesh, Brazil and eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also appear regularly in neighboring southern Canada during the Northern Hemisphere's summer season, and somewhat regularly in Europe, Asia, Argentina, and Australia.
A significant and destructive tornado outbreak that affected parts of the Midwestern United States and lower Great Plains in mid-May 2013. This event occurred just days after a deadly outbreak struck Texas and surrounding southern states on May 15. On May 16, a slow moving trough crossed the Rockies and traversed the western Great Plains. Initially, activity was limited to scattered severe storms; however, by May 18, the threat for organized severe thunderstorms and tornadoes greatly increased. A few tornadoes touched down that day in Kansas and Nebraska, including an EF4 tornado near Rozel, Kansas. Maintaining its slow eastward movement, the system produced another round of severe weather nearby. Activity significantly increased on May 19, with tornadoes confirmed in Oklahoma, Kansas, Iowa, Missouri, and Illinois. In Oklahoma, two strong tornadoes, one rated EF4, caused significant damage in rural areas of the eastern Oklahoma City metropolitan area; two people lost their lives near Shawnee. The most dramatic events unfolded on May 20 as a large EF5 tornado devastated parts of Moore, Oklahoma, killing 24 people. Thousands of structures were destroyed, with many being completely flattened. Several other tornadoes occurred during the day in areas further eastward, though the majority were weak and caused little damage.
On November 17, 2013, the deadliest and costliest November tornado outbreak in Illinois history took shape, becoming the fourth-largest for the state overall. With more than 30 tornadoes in Indiana, it was that state's largest tornado outbreak for the month of November, and the second largest outbreak recorded in Indiana. Associated with a strong trough in the upper levels of the atmosphere, the event resulted in 77 tornadoes tracking across regions of the Midwest United States and Ohio River Valley, impacting seven states. Severe weather during the tornado outbreak caused over 100 injuries and eleven fatalities, of which eight were tornado related. Two tornadoes—both in Illinois and rated EF4 on the Enhanced Fujita scale—were the strongest documented during the outbreak and combined for five deaths. In addition to tornadoes, the system associated with the outbreak produced sizeable hail peaking at 4.00 in (10.2 cm) in diameter in Bloomington, Illinois, as well as damaging winds estimated as strong as 100 mph (160 km/h) in three locations.
The 2011 Philadelphia, Mississippi Tornado was an extremely powerful and fast-moving multi-vortex tornado that touched down in eastern Mississippi on the afternoon of April 27, 2011. Part of the historic 2011 Super Outbreak, the largest tornado outbreak on record, this was the first of four EF5 tornadoes to touch down that day and the first such storm in Mississippi since the 1966 Candlestick Park tornado. While on the ground for 30 minutes, it traveled along a 28.28-mile (45.51 km) path through four counties, leaving behind three deaths, eight injuries, and $1.1 million in damage.
Throughout the evening hours of April 9, 2015, an extremely violent and long-lived multiple-vortex tornado tore through the communities near Rochelle and in Fairdale, Illinois. Part of a larger severe weather event that impacted the Central United States, the tornado first touched down in Lee County at 6:39 p.m. CDT (23:39 UTC). It progressed through the counties of Ogle, DeKalb, and Boone before finally dissipating at 7:20 p.m. CDT. Along the tornado's 30.14-mile (48.51 km) path, numerous structures were heavily damaged or destroyed, especially in the small town of Fairdale where two fatalities and eleven injuries were recorded. A few well-constructed homes were swept completely away, indicative of peak winds near 200 mph (320 km/h), the upper bounds of an EF4 tornado. In the aftermath of the event, hundreds of citizens assisted in cleanup and recovery efforts. Economic losses from the tornado reached $19 million.
In the afternoon hours of April 26, 1991, a large and devastating tornado moved 46 miles (74 km) through areas southeast of Wichita, located in the state of Kansas. The tornado killed seventeen, injured over two hundred others, and left an estimated $300 million of damage in its wake. The tornado was one of the most powerful to ever strike Kansas; it received the highest rating on the Fujita scale.
In the evening hours of April 3, 1974, a series of two large and destructive tornadoes would impact Tanner, located in the state of Alabama. Both of these tornadoes would receive an F5 rating on the Fujita scale, and were two out of seven F5-rated tornadoes to touch down as part of the 1974 Super Outbreak, one of the largest tornado outbreaks in United States history. Each of the tornadoes claimed over fifteen lives, and would kill a combined total of fifty-five people, many in the Tanner area; over four hundred more would be injured. The first tornado would touch down in Lawrence County, moving towards Mt. Moriah. As the tornado passed over the town, it hit a home and killed six people. The tornado would continue to produce extreme damage as it moved to the northeast, ripping water pumps out of the ground and obliterating large objects. The tornado would then cross the Tennessee River as a waterspout, before hitting Tanner. The town was devastated, with many structures in the area completely destroyed and the ground near Tanner being scoured. The tornado would lift seventy-three minutes after forming, leaving behind a trail of destruction.
In the evening hours of April 3, 1974, a powerful and fast tornado would move across northeast portions of Alabama, hitting several towns along a 79.5 miles (127.9 km) path and devastating the town of Guin. The tornado would receive a rating of F5 on the Fujita scale, and was one of seven tornadoes to obtain that rating as part of the 1974 Super Outbreak. The tornado is widely believed to be one of the most violent in recorded history, and had the fastest forward speed ever recorded in a tornado, at 75 miles per hour (121 km/h).
In the afternoon hours of April 3,1974, a large and destructive tornado would move through Central Kentucky and southern Indiana, striking several communities along a 32 miles (51 km) path and devastating the town of Brandenburg, Kentucky. The tornado would kill thirty-one people, twenty-eight in the Brandenburg area, and would produce damage that would later receive a rating of F5 on the Fujita scale. It was one of seven F5-rated tornadoes to touch down in the United States on April 3, and was one of the deadliest.
