Tracks of all tornadoes in the United States in 2004

This page documents notable tornadoes and tornado outbreaks worldwide in 2004. 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.

April 28

• 1893 – An F4 tornado severely damaged or destroyed every building in Cisco, Texas, killing at least 23 people. Half of the town's population was left with no shelter of any kind and 43 of the 45 businesses in town were destroyed. An entire train was thrown 80–200 feet (24–61 m) from the tracks.
• 1950 – Strong tornadoes killed 11 people in Oklahoma and Texas. Five died as an F4 tornado swept away two homes near Clyde, Texas. A refrigerator was carried half a mile (0.8 km) and stuck on top of a telephone pole. Another F4 tornado killed five people as it devastated Holdenville, Oklahoma. One other person died near Lone Wolf, Oklahoma.
• 2002 – Part of a larger outbreak, a rare F4 tornado hit La Plata, Maryland, killing three people and inuring more than 100. The tornado was initially rated F5, but it was downgraded after the swept-away houses were found to have been very poorly anchored. A report on this tornado led to the creation of a "Quick Response Team" for assessing damage from potential F4 and F5 tornadoes.

April 29

• 1909 – A major tornado outbreak hit the Midwestern and Southeastern United States, killing at least 132 people. A probable tornado family killed at least 29 people in and near Horn Lake, Mississippi and across rural areas of southern Tennessee. At least 29 others were killed by an F4 tornado in Bee Springs and Millville near Dellrose, Tennessee.
• 1947 – An F4 (possibly F5) tornado destroyed nearly all of Worth, Missouri, killing 14 people. Half of a building remained standing in the downtown area.
• 1972 – A tornado killed an estimated 300 people in Bhakua and Haripur, Bangladesh.

April 30

• 1924 – A tornado outbreak killed 111 people in the Southeastern United States. The greatest loss of life was from a long-track tornado family, with a maximum rating of F4, that killed 53 people in small communities across South Carolina, including 24 in Richland County, and 20 in Sumter County. An F3 tornado killed 14 people in Florence County, South Carolina.

• ...that the 2013 Moore tornado that struck Moore and Newcastle, Oklahoma, is the most recent EF5 tornado?
• ...that the 2021 South Moravia tornado, an IF4 tornado with winds between 207–260 mph (333–418 km/h), was the strongest tornado to hit the Czech Republic in modern history?