KCCI
Now playing
01:26
Watch multiple tornadoes hit Iowa
orig how tornadoes form_00000019.jpg
orig how tornadoes form_00000019.jpg
Now playing
01:16
How tornadoes form
The Vortex SE team deploys a StickNet during a Tornado Chase in Tennessee.
Judson Jones/CNN
The Vortex SE team deploys a StickNet during a Tornado Chase in Tennessee.
Now playing
03:21
Chasing deadly tornadoes in the Southeast
indiana tornado damage
WRTV
indiana tornado damage
Now playing
00:53
Indiana suffers widespread tornado damage
tornado footage elmore city mcgee rodriguez natsot_00004529.jpg
Facebook/Phillip McGee/Mark Rodriguez
tornado footage elmore city mcgee rodriguez natsot_00004529.jpg
Now playing
01:03
See incredible view of tornado
A derecho wind storm can sometimes be more powerful than a tornado.
CNN
A derecho wind storm can sometimes be more powerful than a tornado.
Now playing
01:01
What is a derecho?
tornado in oklahoma raw _00003827.jpg
KOCO
tornado in oklahoma raw _00003827.jpg
Now playing
01:27
Massive tornado in Oklahoma caught on camera
fire storms twister van dam lklv_00024715.jpg
SevereStudios.com
fire storms twister van dam lklv_00024715.jpg
Now playing
00:47
Massive Colorado twister captured on video
Tornado Formation Weather_00005608.jpg
Tornado Formation Weather_00005608.jpg
Now playing
01:37
Anatomy of a tornado
Massive tornado roars across highway_00000000.jpg
@basehunters
Massive tornado roars across highway_00000000.jpg
Now playing
00:46
Massive tornado roars across highway
(CNN) —  

A man sits alone on a rock as chaos swirls around him in the aftermath of a devastating tornado.

Sirens wail. The area is littered with overturned cars and twisted debris crumpled on top of each other after a tornado ripped through Pella, Iowa, one of several that tore through the state on Thursday.

The man hunches over quietly, his eyes cast downward as his foot rests on what appears to be a stray tire. His facial expression can’t be seen in the video shot by CNN affiliate KCCI.

KCCI

Pella’s Vermeer Corporation plant, which manufactures industrial and agricultural equipment, was heavily damaged Thursday.

The tornado had ripped out chunks of the roof in one of the buildings, KCCI’s drone footage showed. Smashed cars, shattered glass and pieces of the building lay scattered across the company grounds.

Vermeer CEO Jason Andringa said about 400 dealers and customers were on site as part of a 70th anniversary event when the severe weather hit. They were escorted to tornado facilities.

Seven people were transported to Pella Regional Health Center with minor injuries – all have been treated and released, he said.

CNN’s Steve Almasy and Jamiel Lynch contributed to this report.