Record-Breaking Tornado Storms Through Iowa, Leaving Path of Devastation

By: James Dorman | Last updated: Jul 16, 2024

Devastation in the wake of a tornado ripping through the city of Greenfield, Iowa, sadly sees five dead and dozens more injured.

The tornado is also responsible for extensive property damage in the area. The scope of this destruction is given proper perspective when you consider the potentially world record-breaking metrics of the tornado.

'Gut-Wrenching' and 'Horrific'

Toward the end of May 2024, there were reports of 26 tornados across Wisconsin, Oklahoma, Minnesota, Missouri, Nebraska and Iowa. It is believed that at least 21 of these tornadoes hit Iowa.

Fields in the foreground, the sky is a mix of black and white cloud with a tornado funnel pointing to the ground.

Source: Nikolas Noonan/Unsplash

In the wake of these devastating tornadoes, Iowa Governor Kim Reynolds spoke in a press conference in the shellshocked city of Greenfield, saying: “It’s just gut-wrenching. It’s horrific. It’s hard to describe until you can actually see it, the devastation.”


Unusual Tornado Behavior

According to the National Weather Service, the tornado was up to 1,000 feet wide at points. However, it had significantly narrowed by the time it bombarded Greenfield.

A mix of white and black clouds appear to be starting to swirl around in the sky with light breaking through behind them.

Source: Neenu Vimalkumar/Unsplash

Des Moines Register reporting may have an answer as to why the tornado behaved in this way, thanks to a radar truck known as the Doppler on Wheels (or DOW).

Incredible Data

The DOW recorded something truly remarkable — according to its measurements, Greenfield was hit with winds of over 300 miles per hour.

A white, slightly rusted weather vane pointing east against a blue sky.

Source: Jordan Ladikos/Unsplash

This is far from a common reading. In fact, it would be a world record contender as scientists have only ever calculated wind speeds of that kind of magnitude two previous times.

Recording Tornado Speeds

A team of University of Illinois researchers operated the Doppler on Wheels radar truck, but they weren’t the only ones collecting data on the tornado.

Long brown dirt road through a field toward a heavy black sky with a bolt of lightning.

Source: Jason Hudson/Unsplash

Alongside the DOW radar truck team, storm chasers gathered readings from the tornado from various angles. All this data allowed for new findings regarding the tornado’s true scale.

Tornado Rating

The official rating of the Greenfield tornado currently is EF4. This is the second-highest rating on the Enhanced Fujita, or EF, scale.

Black clouds begin to swirl into a wide, tornado-like shape pointing down toward a silhouetted rural landscape.

Source: Andrew Seaman/Unsplash

The National Weather Service has advised, though, that additional analysis of the tornado could see its rating changed. An EF5 rating, the highest rating on the EF scale, requires speeds in excess of 200 miles per hour.


National Weather Service Had To Take Cover

The storms in this area got so bad that the National Weather Service had to take cover for a period of time until the worst parts of the storm had passed.

A painting of a tornado going through the town. There are houses on the left and the road down the middle.


When it was able to come back, it reported that there had been extensive damage in the city.


A Rare Event

Tornadoes like the kind that swept through Greenfield are highly unusual — a point emphasized by scientist Tony Lyza of the National Severe Storms Laboratory.

On the side of the road through sandy terrain, a triangular road sign with a red outline and a blue graphic of a tornado in the middle.

Source: Ash Hayes/Unsplash

In comments to NBC, Lyza stated, “Tornadoes producing this intensity and this kind of damage are rare in the United States. We only get a handful of these each year.”


300 mph Tornadoes

Estimates place the Greenfield tornado as having reached wind speeds of 309–318 miles per hour. This would make it only the third tornado to exceed the 300 miles per hour mark.

A solitary tree in the middle of a green field is blown to the right in extremely strong winds against a gray sky.

Source: Khamkeo Vilaysing/Unsplash

The only other tornadoes recorded with speeds in this range both hit the state of Oklahoma: a tornado in El Reno in 2013 reached wind speeds of 291–336 miles per hour, and a 1999 Bridgecreek tornado is believed to have reached speeds of 321 miles per hour.


Winds of 85MPH

The storms have been moving east through Iowa and are heading towards Urbandale after going through the Des Moines metro area.

Wheat blowing in the breeze.

Alex Seinet/Unsplash

Severe weather warnings have continued to be issued, with winds expected to reach 85 mph and the possibility of large hail stones falling.


460,000 Left Without Power

The tornados have been so devastating that many people have been left without power. Trees and power poles were torn down in the tornado’s path.

People walking through a shopping center during a blackout. There is a little bit of light and some people are carrying bags.

Claudio Schwarz/Unsplash

460,000 people have been left without power, 390,000 of whom are based in northern Illinois alone.


Companies Are Working To Restore Power

Due to the number of people still without power, electric companies are trying to restore power to these areas as quickly as possible.

A person on a cherry picker that is reconnecting power lines to bring back power.


However, as the storms are still ongoing and many more people are expected to be without power once the storm hits their area, it could take some time for this to be resolved.


Public Reaction

Given how rare an event a tornado of this size is, you would expect the public reaction to these figures coming out of Greenfield to be one of shock. This isn’t the case for anyone who saw the devastation it caused firsthand.

A huge clump of dirt and tree limbs as an uprooted tree lies by the side of the road next to a house.

Source: State Farm/Wikimedia Commons

One Reddit user stated: “Wouldn’t be surprised [if it reached 300 miles-per-hour]. That thing was a beast.”


Next of Kin Have Been Notified

Several people have been reported dead as the storms continue to rip through the US. However, not all of the names of those who have died have been released publicly.

A lightning bolt coming out of a tornado with cars driving down the road.


This is because the police are waiting to inform each person’s next of kin of the situation, giving that person time to tell friends and family and to come to terms with everything before making the news public.


Greenfield Hospital Damaged

One of the main buildings that was damaged was Greenfield Hospital, which posed an issue for the many people who were requiring immediate treatment due to injuries obtained as a result of the storm.

The remnants of Greenfield Hospital after the tornado. There is a lot of rubble left over from where the hospital collapsed.


As a result, those requiring treatment have been forced to seek treatment in hospitals elsewhere and, in some cases, have had to travel miles to receive it.


Natural Weather Events Cause Disaster

The natural weather events that leave paths of disaster wherever they go seem to be getting increasingly worse (or at least are being reported more frequently.)

An aerial view of tropical storm Alberto. There is a lot of cloud swirling above.


One such example is Tropical Storm Alberto, which left three people dead close to the northeast of Mexico. It was initially expected that the storm would also reach Texas; however, the Lone Star State managed to avoid the brunt of the storm.


Other Extreme Weather in the U.S.

Recently, America has been bombarded with extreme weather — not just tornadoes, but extreme heat and flooding.

The U.S. Capitol - a white stone building with a domed top under a blue sky on a sunny day. There are some green trees and shrubs in the foreground.

Source: Elijah Mears/Unsplash

Washington, D.C., recently experienced scorching heat reaching 100 degrees Fahrenheit, while extreme flooding resulted in the Rapidan Dam partially failing and a family home being completely washed away.


Severe Storms Hit Texas

Thunderstorms and winds at the speed of hurricanes have devasted Texas recently. The situation was so bad that it left at least seven people dead, a loss of power, and many people had their homes and businesses destroyed.

A computer image of a storm going through the US. The worst of the storm is in Texas.


It is believed that a heatwave made this even worse when the cleanup began, as people had to do hard work in severe heat. The worry was that this would lead to heat stroke and other heat-related illnesses for residents.


The Effect of Climate Change on the US Economy

Climate change isn’t just affecting the environment and humans, but it also has a huge effect on the US economy.

A protest with a person holding up a sign of an image of the Earth with "Eco not ego" written through the Earth.

Mika Baumeister/Unsplash

The annual cost of repairing the impacts of climate change throughout the US is estimated at $150 billion. As climate change worsens, so does the amount spent on it, which could be spent elsewhere.


Disasters Around the World

Extreme weather disasters like this aren’t a problem limited to the U.S.. They’re being felt all around the globe.

Two green trees stand with brown-tinged water reaching up the trunk almost to the point where the branches start to branch off. In the background, we see trees and a white building. The sky is partly cloudy.

Source: Bernd Dittrich/Unsplash

Whether it’s extreme flooding in Germany or a record Indian heat wave, reports of catastrophic weather disruptions seem to be in the news every few months. As we feel the effects of climate change, extreme weather events are expected to become more frequent and intense according to the European Environment Agency.


Flash Flood Warnings in Chicago

Iowa isn’t the only place affected by these tornados; Chicago and the state of Indiana have also been experiencing severe storms over the last week.

A flood in Texas. Two cars have attempted to drive through the water and are halfway up the cars. Other traffic is further up the road in a higher spot away from the water.


Chicago was also placed on a flash flood warning into the middle of the week. Due to the heavy rain the area was experiencing, flooding was expected to affect creeks, streams, drainage ditches, streets, and underpasses.


What Causes These Storms?

There are several reasons for these storms and why they have been as bad as they have been. Most of this is due to extreme weather changes.

Bolts of lightning in the sky that are hitting some buildings on the ground.

David Moum/Unsplash

This is due to factors such as heat and humidity, which can build up a lot of energy for storms to feed off of. It also includes a change in wind direction, wind shear, and a source of upward motion that enables storms to develop.


Advice Given to Residents

Those living in areas that have been or are expected to be hit by these storms have been given some advice to help them through it.

A bolt of lightning lighting up the sky and hitting the ground below it.


This advice includes taking shelter when storms approach, staying away from any windows, and going to the lowest floor of your home if possible.


Extreme Weather Continues

The devastating tornadoes that hit Iowa and the devastation they caused obviously cannot be dismissed. But weather events like this seem to be becoming part of the norm.

Climate protest sign depicting a drawing of the Earth on a black background with the words “One World” in white letters.

Source: Markus Spiske/Unsplash

More and more, reports of freak weather wreaking havoc around the world are becoming a frequent occurrence. Devastation is almost becoming seasonal as we feel the ever-growing impact of our planet’s changing climate.