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.
The Great Natchez tornado hit Natchez, Mississippi, on Thursday, May 7, 1840. The tornado was the second-deadliest tornado in United States history; at least 317 people were killed and at least 109 were injured. While officially unrated, it is retrospectively estimated to have been at least a violent F4 tornado on the Fujita scale. Its 35-mile-long (56 km), 1,000-yard-wide path was marked by severe damage and uncertain estimates of casualties, though many enslaved Africans—possibly numbering in the hundreds—reportedly died on plantations in Louisiana.
The 1985 United States–Canada tornado outbreak, referred to as the Barrie tornado outbreak in Canada, was a major tornado outbreak that occurred in Ohio, Pennsylvania, New York, and Ontario, on May 31, 1985. In all 44 tornadoes were counted including 14 in Ontario, Canada. It is the largest and most intense tornado outbreak ever to hit this region, and the worst tornado outbreak in Pennsylvania history in terms of deaths and destruction.
A deadly series of at least 33 tornadoes hit at least 10 different U.S. states on May 9–11, 1953. Tornadoes appeared daily from Minnesota in the north to Texas in the south. The strongest and deadliest tornado was a powerful F5 tornado that struck Waco, Texas on May 11, causing 114 of the 144 deaths in the outbreak. Alongside the 1902 Goliad tornado, it was the deadliest tornado in Texas history and is the 11th deadliest tornado in U.S. history. The tornado's winds demolished more than 600 houses, 1,000 other structures, and over 2,000 vehicles. 597 injuries occurred, and many survivors had to wait more than 14 hours for rescue. The destruction dispelled a myth that the geography of the region spared Waco from tornadoes, and along with other deadly tornadoes in 1953, the Waco disaster was a catalyst for advances in understanding the link between tornadoes and radar-detected hook echoes. It also generated support for improved civil defense systems, the formation of weather radar networks, and improved communications between stakeholders such as meteorologists, local officials, and the public.
The tornado outbreak of April 6–9, 1998 was a large tornado outbreak that started on April 6 across the Great Plains and ended on April 9 across the Carolinas and Georgia. A total of 62 tornadoes touched down from the Middle Atlantic States to the Midwestern United States and Texas. The outbreak is infamous for producing a deadly F5 that tore through the suburbs of Birmingham, Alabama, killing 32 people. The Birmingham tornado was one of only two F5 tornadoes that year. The other hit in Lawrence County, Tennessee, on April 16, as part of the same outbreak as the Nashville F3 tornado. This tornado outbreak was responsible for 41 deaths: 7 in Georgia and 34 in Alabama.
On Monday, June 8, 1953, an exceptionally violent tornado struck the north side of Flint, Michigan and the northern suburb of Beecher, causing catastrophic damage and hundreds of casualties. Rated as an F5 on the Fujita Scale, the tornado touched down in Genesee County, Michigan, at 8:30 p.m. EST and continued on a 18.6-mile-path (29.9 km), causing 116 fatalities, 844 injuries and an estimated $19 million in damage.
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.
On June 20, 1957, a violent and deadly F5 tornado commonly known as the Fargo tornado, struck the north side of Fargo, North Dakota as well as the area north of Moorhead, Minnesota. It was part of a family of five devastating tornadoes produced by one supercell over the course of 3.5 hours, although they are listed as one continuous tornado. The tornado family started in North Dakota, traveled 27.4 miles (44.1 km) to the Minnesota border before crossing it and continuing for another 25 miles (40 km) for a total track length of 52.4 miles (84.3 km). Additionally, at its widest point, the damage swath reached 500 yards (460 m) across. A total of 10 people were killed, making it the deadliest tornado in North Dakota history. Meanwhile, 103 others were injured, and damage was estimated at $25.25 million. It was part of a larger outbreak sequence of 23 tornadoes that affected the Midwest and Great Plains.
Minnesota has a humid continental climate, with hot summers and cold winters. Minnesota's location in the Upper Midwest allows it to experience some of the widest variety of weather in the United States, with each of the four seasons having its own distinct characteristics. The area near Lake Superior in the Minnesota Arrowhead region experiences weather unique from the rest of the state. The moderating effect of Lake Superior keeps the surrounding area relatively cooler in the summer and warmer in the winter, giving that region a smaller yearly temperature variation. On the Köppen climate classification, much of the southern third of Minnesota—roughly from the Twin Cities region southward—falls in the hot summer zone (Dfa), and the northern two-thirds of Minnesota falls in the warm summer zone (Dfb).
The 1905 Snyder, Oklahoma, tornado was a powerful tornado that struck the town of Snyder, Oklahoma, in Kiowa County on Wednesday, May 10, 1905. The event was one of the worst natural disasters ever to hit the state of Oklahoma. The tornado killed 97 people, making it the second most deadly tornado in Oklahoma history. The tornado was part of a larger, multiple-day tornado outbreak that hit several states across the Midwestern United States, including Kansas, Oklahoma, and Missouri.
On April 14–15, 1886, a destructive tornado outbreak affected portions of the Midwestern and Southern United States. The outbreak generated at least 18 tornadoes, four of which were violent, including the St. Cloud–Sauk Rapids tornado, an F4 tornado that tore through the cities of St. Cloud, Sauk Rapids, and Rice, Minnesota, on April 14, destroying much of the town of Sauk Rapids and killing 72 people along its path. It is the deadliest tornado on record in Minnesota. Other tornadoes occurred in Iowa, Kansas, Missouri, and Texas on the same day, suggesting the possibility of a large outbreak. In all, the entire outbreak killed at least 87 people and injured at least 324.
The Tornado outbreak of May 1968 was a significant and deadly tornado outbreak that struck most of the central and southern United States from May 15 to May 16, 1968. Producing 46 tornadoes, the outbreak killed at least 72 people, including 45 in Arkansas alone. The outbreak also produced two F5 tornadoes in Iowa. It was one of the deadliest tornado outbreaks in the United States since the 1960s and is one of the deadliest outbreaks in Iowa history.
The 1956 McDonald Chapel tornado was a deadly weather event that took place during the afternoon of Sunday April 15, 1956, across the Greater Birmingham area in Jefferson County, Alabama, with damage most severe in McDonald Chapel. The F4 tornado killed 25 people and injured 200 others. While only two known tornadoes touched down across the Southeastern United States on that day, the Birmingham tornado produced major devastation across areas west and north of downtown Birmingham.
On June 3–4, 1958, a destructive tornado outbreak affected the Upper Midwestern United States. It was the deadliest tornado outbreak in the U.S. state of Wisconsin since records began in 1950. The outbreak, which initiated in Central Minnesota, killed at least 28 people, all of whom perished in Northwestern Wisconsin. The outbreak generated a long-lived tornado family that produced four intense tornadoes across the Eau Claire–Chippewa Falls metropolitan area, primarily along and near the Chippewa and Eau Claire rivers. The deadliest tornado of the outbreak was a destructive F5 that killed 21 people and injured 110 others in and near Colfax, Wisconsin.
The tornado outbreak sequence of May 1896 was a series of violent and deadly tornado outbreaks that struck much of the Central and Southern United States from May 15 to 28, 1896. It is considered one of the worst tornado outbreak sequences on record with tornado expert Tom Grazulis stating that the week of May 24–28 was "perhaps the most violent single week of tornado activity in United States history". There were four particularly notable tornado outbreaks during the two-week period. It produced three F5 tornadoes as well as the third deadliest tornado ever in United States history. A total of at least 484 people were killed during the entire outbreak sequence by at least 38 different tornadoes which struck Texas, Oklahoma, Kansas, Nebraska, Kentucky, Iowa, Illinois, Michigan, Missouri, Pennsylvania, New Jersey and Maryland.
A multi-day tornado outbreak affected the central plains of the United States from May 22–27, 2008. It was also one of the largest continuous tornado outbreaks on record. A total of 173 tornadoes were confirmed, with the most intense activity occurring across the Great Plains. One person was killed when a large wedge tornado struck Windsor, Colorado, and two more deaths were reported in Pratt County, Kansas. One person was also killed near Hugo, Minnesota on May 25 and nine were killed by an EF5 tornado that destroyed most of Parkersburg, Iowa and a small subdivision of New Hartford, Iowa. Another fatality, caused by lightning related to the storms, occurred in central Kansas.
The 2011 Hackleburg–Phil Campbell tornado was a large, long-lived, and devastating EF5 tornado that impacted several towns in rural northern Alabama before tearing through the northern suburbs of Huntsville on the afternoon and early evening of April 27, 2011. It was the deadliest tornado of the 2011 Super Outbreak, the largest tornado outbreak in United States history. The second of four EF5 tornadoes to touch down on April 27, the tornado reached a maximum width of 1.25 miles (2.01 km) and was estimated to have had peak winds of 210 mph (340 km/h).
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.
This page documents the tornadoes and tornado outbreaks of 1947, 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.
The 2008 Parkersburg–New Hartford tornado was an extremely powerful EF5 wedge tornado that devastated portions of northeast Iowa, most notably the town of Parkersburg, during the afternoon of May 25, 2008, resulting in catastrophic damage and nine fatalities.
