State regulators late Friday ordered reduced volume reductions or shutdowns for oil and gas wastewater disposal wells in the vicinity of an earthquake epicenter from earlier in the day.
Several earthquakes, including one of magnitude 4.2, one 3.7 magnitude and one 3.5 magnitude, were recorded in northern Oklahoma by the Oklahoma Geological Survey.
The quakes were recorded southeast of Enid, about 95 miles north of Oklahoma City. There were reports of the earthquakes being felt in Tulsa.