A supercell is a thunderstorm characterized by the presence of a mesocyclone: a deep, persistently rotating updraft. Due to this, these storms are sometimes referred to as rotating thunderstorms. Of the four classifications of thunderstorms, supercells are the overall least common and have the potential to be the most severe. Supercells are often isolated from other thunderstorms, and can dominate the local weather up to 32 kilometres (20 mi) away. They tend to last 2–4 hours.
During the evening hours of March 28, 2000, a powerful F3 tornado struck Downtown Fort Worth, Texas, causing significant damage to numerous buildings and skyscrapers as well as two deaths. The tornado was part of a larger severe weather outbreak that caused widespread storms across Texas and Oklahoma in late-March, spurred primarily by the moist and unstable atmospheric environment over the South Central United States as a result of an eastward-moving upper-level low and shortwave trough. The tornado outbreak was well forecast by both computer forecast models and the National Weather Service, though the eventual focal point for the severe weather—North Texas—only came into focus on March 28 as the conditions favorable for tornadic development quickly took hold.
The Carolinas tornado outbreak of March 28, 1984, was the most destructive tornado outbreak to sweep through the two states since another tornado outbreak struck 100 years and 1 month earlier, according to NOAA and NCDC public records.
The tornado outbreak of September 24, 2001 was one of the worst tornado events to ever have directly affected the Baltimore-Washington metropolitan area in the United States. The outbreak occurred on Monday, September 24, 2001, and was responsible for two deaths and 57 injuries.
This page documents notable tornadoes and tornado outbreaks worldwide in 2006. Strong and destructive tornadoes form most frequently in the United States, Bangladesh, and Eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, Argentina, Brazil and Australia. Tornadic events are often accompanied with other forms of severe weather, including strong thunderstorms, strong winds, and hail.
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.
This page documents notable tornadoes and tornado outbreaks worldwide in 2003. Strong and destructive tornadoes form most frequently in the United States, Bangladesh, and Eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, and Australia. Tornadic events are often accompanied with other forms of severe weather, including strong thunderstorms, strong winds, and hail.
This page documents the tornadoes and tornado outbreaks of 2002, primarily in the United States. Most tornadoes form in the U.S., although some events may take place internationally. The year had several large outbreaks that included the Veterans Day Weekend tornado outbreak and the Midwest to Mid-Atlantic United States tornado outbreak.
This page documents notable tornadoes and tornado outbreaks worldwide in 2001. Strong and destructive tornadoes form most frequently in the United States, Bangladesh, and Eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, and Australia. Tornadic events are often accompanied with other forms of severe weather, including strong thunderstorms, strong winds, and hail.
The Hurricane Ivan tornado outbreak was a three-day tornado outbreak that was associated with the passage of Hurricane Ivan across the Southern United States starting on September 15, 2004, across the Gulf Coast states of Alabama and Florida as well as southern Georgia before ending in the Middle Atlantic Coast on September 18.
The November 2008 Carolinas tornado outbreak was a brief but deadly tornado outbreak which began shortly after midnight, while many people were sleeping. Most of the eight tornadoes that touched down were produced by two supercell thunderstorms over North Carolina. At 12:25 a.m. EST, the National Weather Service issued a tornado watch for most of eastern North Carolina as the risk of tornadoes increased. Not long after, the first tornado of the outbreak, an EF2, touched down in South Carolina. Almost an hour later, the second tornado touched down in Robeson County, North Carolina. Three other minor tornadoes, two EF0 and an EF1, touched down over the next two hours. Around 3:10 a.m. EST, the first of two killer tornadoes touched down near Kenly, North Carolina. The EF2 tornado destroyed a few homes and damaged several others. Roughly 20 minutes later, an EF3 tornado touched down in Wilson County. This tornado killed one person and injured a few others after destroying several homes. Total damages from the outbreak amounted to $2.5 million, about half of which was a result of the EF3 tornado.
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.
A tornado outbreak struck southern and central Poland on 15 August 2008. Overall, it killed four people. Tornadoes affected Opole Voivodeship, Silesian Voivodeship and Łódź Voivodeship. The European Storm Forecast Experiment issued a Level 3 which means there could potentially be a major severe thunderstorm outbreak.
This page documents the tornadoes and tornado outbreaks of 1998, primarily in the United States. Most 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, however by the 1990s tornado statistics were coming closer to the numbers we see today.
From April 14–16, 2011, a tornado outbreak, among the largest recorded tornado outbreaks in U.S. history, produced 178 confirmed tornadoes across 16 states, resulting in severe destruction on all three days of the outbreak. A total of 38 people were killed from tornadoes and an additional five people were killed as a result of straight-line winds associated with the storm system. The outbreak of severe weather and tornadoes led to 43 deaths in the Southern United States. This was the largest number of fatalities in an outbreak in the United States since the 2008 Super Tuesday tornado outbreak. It is locally referred to as the "Forgotten Outbreak" in Alabama as it was vastly overshadowed by the 2011 Super Outbreak less than two weeks later.
The following is a glossary of tornado terms. It includes scientific as well as selected informal terminology.
On April 25, 2014, a localized tornado outbreak struck North Carolina, resulting in the first tornado-related fatality during that year in the United States. The event marked the latest formation of the first EF3 or stronger tornado during a calendar year and latest date for the first tornadic death.
This page documents notable tornadoes and tornado outbreaks worldwide in 2020. Strong and destructive tornadoes form most frequently in the United States, Argentina, Brazil, Bangladesh, and eastern India, but can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, Argentina, Australia and New Zealand. Tornadic events are often accompanied by other forms of severe weather, including strong thunderstorms, strong winds, and hail.
A deadly and destructive outbreak sequence of 23 tornadoes struck parts of the Great Plains and the Great Lakes in late-June 1957. At least seven significant tornadoes (F2+) touched down during the outbreak sequence. The most devastating storm was a large, violent, and catastrophic 500-yard-wide F5 tornado family that struck Fargo, North Dakota on Thursday, June 20, 1957, killing 10 people and becoming the deadliest tornado ever recorded in North Dakota. The outbreak caused 11 fatalities, 105 injuries, and $25.883 million in damage.
A destructive outbreak of 14 tornadoes hit the Southeast. Seven of the 14 tornadoes were significant (F2+) and multiple populated areas were struck. Overall, the outbreak injured 11 and caused $460,030 in damage.
