First responders from the area have responded to help and there are reports of injuries.
A nearby business owner told NBC News there is lots of damage and houses are either knocked down or completely gone. The local church was also heavily damaged, if not destroyed. There are also reports of gas leaks in damaged homes and reports of an unknown number of people trapped.
No fatalities were confirmed, but there were at least eight to nine injuries.
News media was not being let into Harveyville while authorities conducted a house-to-house search.
(KUSA-TV © 2012 Multimedia Holdings Corporation)