{{short description|2024 EF5EF4 tornado in southwestern Iowa}}

| image2 = DOW6 data of the Greenfield, Iowa EF5EF4 tornado.png

| alt = Top: A photo of the EF5EF4 tornado taken east of [[Carl Township, Adams County, Iowa|Carl, Iowa]]. Bottom: High-resolution radar data of the EF5EF4 tornado caught by [[Doppler on Wheels|DOW6]].

| caption = {{Unbulleted list|'''Top:''' A photo of the EF5EF4 tornado taken east of [[Carl Township, Adams County, Iowa|Carl, Iowa]].|'''Bottom:''' High-resolution radar data of the EF5EF4 tornado caught by [[Doppler on Wheels|DOW6]].}}

| winds = {{Bulleted list|''Official intensity'':<br>{{convert|300185|mph|km/h|abbr=on}}|''Unofficial intensity'':<br>{{convert|309-318|mph|km/h|abbr=on}}<br><small>([[Doppler on Wheels]] (DOW) estimate)</small>}}

| fujita-scale = EF5EF4

Throughout the afternoon hours of May 21, 2024, a large and destructive tornado struck the cities and communities of [[Villisca, Iowa|Villisca]], [[Nodaway, Iowa|Nodaway]], [[Brooks, Iowa|Brooks]], [[Corning, Iowa|Corning]], and [[Greenfield, Iowa|Greenfield]] in southwestern [[Iowa]], killing 5 people and injuring 35 others. The tornado was the strongest of the [[tornado outbreak sequence of May 19–27, 2024]]. The tornado reached peak intensity in the city of Greenfield, leading the [[National Weather Service]] in [[Des Moines, Iowa]] to assign a rating of mid-range EF4 on the [[Enhanced Fujita scale]], with maximum wind speeds estimated at {{convert|300185|mph|km/h|abbr=on}}.<ref name="DAT" />

This tornado was the third violent tornado of the [[Tornadoes of 2024|2024]] season and the second one during the prolifically active month of May.