Moderate quake shakes central Oklahoma

Moderate quake shakes central Oklahoma

Moderate quake shakes central Oklahoma

The U.S.G.S. said it was a 3.3 magnitude that hit four miles east, northeast of Edmond.

Edmond's police department reported no significant damages from that quake, but many locals and households were shaken up.

A 4.2 magnitude quake rattled at about 10 p.m. Wednesday night near Edmond.

The Latest on the recent cluster of earthquakes in central Oklahoma. Edmond officials said two electric substations were knocked out, darkening the northeastern part of the city and leaving about 1,900 customers without power.

Stay with KOCO 5 for updates.

Electricity was restored to one of the substations after about an hour of being offline.

Four hours later, a less intense natural disaster of a preliminary magnitude 3.5 struck the area in the early hours of Thursday. Scientists have linked a dramatic increase in quakes in Oklahoma, Kansas and Texas to the underground disposal of wastewater from oil-and-gas production.

The Oklahoma Corporation Commission's Induced Seismicity Department and the Oklahoma Geological Survey are investigating the recent Edmond-area earthquakes.

The wells lie within a 10-mile radius of the seismic activity and target the sponge-like Arbuckle formation. "The earthquakes have been clustered close together in an area where there is a known fault".

The quakes struck Tuesday night and Wednesday just east of Edmond, about 15 miles (24 kilometers) northeast of Oklahoma City. The others ranged in magnitude from 2.6 to 3.5. The OCC said Edmond is located within the AOI.

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