Editing Greenfield, Iowa (section)

===2024 tornado===
{{main|2024 Greenfield tornado}}

On May 21, 2024, during [[tornado outbreak sequence of May 19–27, 2024|a significant tornado outbreak]] affecting parts of the [[Midwest]], Greenfield was struck by a [[2024 Greenfield tornado|violent tornado]]. Many homes were heavily damaged or destroyed, and four were killed and at least 35 others injured in Greenfield.<ref>{{cite web |url=https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1170280 |title=Storm Events Database (DMX survey FISK, 2024-05-21 14:27 CST-6) |publisher=[[National Centers for Environmental Information]] }}</ref><ref>{{Cite web |last=US Department of Commerce |first=NOAA |title=Event Summary May 21, 2024 Tornadoes, Winds and Flash Flooding |url=https://www.weather.gov/dmx/2024-May-21-Iowa-TornadoesWindsFlooding |access-date=2024-06-03 |website=www.weather.gov |language=EN-US}}</ref> With wind speeds of over {{cvt|260|mph|km/h}}, this tornado may have produced some of the highest wind speeds ever recorded on earth, estimated to exceed {{cvt|300|mph|km/h}} at the ground.<ref>{{cite web |last1=Satre |first1=Zane |title=300+ mph: Greenfield, Iowa tornado had some of the strongest winds ever recorded, radar data shows |url=https://www.kcci.com/article/may-21-2024-greenfield-iowa-tornado-had-some-of-the-strongest-winds-ever-recorded/61423120 |website=KCCI |access-date=September 25, 2024 |date=Jun 26, 2024}}</ref>