Portal:Tornadoes/Anniversaries/May 24

May 24
 * 1973 – A highly-visible F4 tornado hit Union City, Oklahoma, killing two people. This was one of the intensely studied tornadoes in scientific history. For the first time, Doppler weather radar detected the circulation of the tornado before it touched down, a significant advancement in tornado forecasting. This was also the first time that scientists had documented the entire life cycle of a tornado in detail.
 * 2011 – An extremely intense EF5 tornado passed near El Reno and Piedmont, Oklahoma, killing nine people and injuring 181. Mobile Doppler radar recorded wind speeds of up to 295 mph. A tanker truck was thrown a mile (1.6 km) and a 1.9-million-pound (860,000 kg) oil rig was rolled three times. Two high-end EF4 tornadoes passed near Blanchard and Washington, Oklahoma. The Blanchard tornado may also have reached EF5 intensity.