The United States Geological Survey said a magnitude 5.6 earthquake happened at 7:02 a.m. Saturday in north-central Oklahoma, on the fringe of an area where regulators had stepped in to limit wastewater disposal. Sean Weide in Omaha told the AP that he'd never been in an earthquake before and thought he was getting dizzy. An increase of earthquakes in Oklahoma of magnitude 3.0 or greater has been linked to underground disposal of wastewater from oil and natural gas production. State regulators have asked producers to reduce wastewater disposal volumes in earthquake-prone regions of the state. Kansas moved quickly to limit volume while Oklahoma concentrated on the depth of the disposal.

Source: Los Angeles Times September 03, 2016 12:44 UTC