a rare 5.6 magnitude earthquake shook the Oklahoma Saturday

A rare earthquake of magnitude 5.6 struck Saturday night in the center of Oklahoma (center of the United States), an output record for the region, said the U.S. central Geophysics (USGS).
house that shook by Oklahoma 5.6 magtitude earthquake
A first tremor of 4.7 on the moment magnitude scale occurred in the morning. The authorities have indicated damage but no casualties. The epicenter of the earthquake, which occurred at 10:53 p.m. local time (3:53 GMT Sunday), was located six miles east of the town of Sparks at a depth of five kilometers.
A 5.6 magtiitude earthquke shake Oklahoma Saturday
The first quake occurred at 2:12 (7:12 GMT Saturday) to nine miles north of the city of Prague. According to the USGS, the earthquake the most powerful previously registered in that State in 1952 with a magnitude of 5.5.Emergency services Lincoln County indicated that there was significant damage without specifying clearly the extent, depending on the local television station KJRH.
Oklahoma earthquake 6 November 2011
Quoted by the daily The Tulsa World, the head of emergency services, Joey Wakefield, said deformation of the pavement on portions of a highway and the collapse of a chimney of a two-storey house near the city of Prague. Other buildings were also damaged, he said. It was a pretty bad little earthquake, he said.
5.6 magnitude earhquake rocks Oklahoma and Kansas City
The newspaper of Oklahoma City, the main town of the state, located 72 km from the epicenter, said the second quake was felt to northern Texas. A strong earthquake was also felt in Kansas City to over 570 km. The newspaper, quoting a spokesman for emergency services in Oklahoma, no injuries have been reported to them.

But many residents of the affected area had a great fear. A table near the TV has picked up the wall and we jumped because we then thought something had hit the house, told The Oklahoman newspaper, Noeh Morales, a resident of Oklahoma City. It was like a rumble and I had never heard anything so loud.

To overcome the limitations of the Richter scale, seismologists, especially Americans, have used the scale known as moment magnitude. Designed in 1977, it measures the energy released by an earthquake.