USGC- Oklahoma Hotspot for earthquakes, 4.2 recorded on Saturday
An earthquake of magnitude 4.2 struck 8 km (5 miles) northwest of Perry, Oklahoma, late on June 20, the U.S. Geological Survey recorded. It was felt in parts of Tulsa as protesters filled the city's downtown streets following the Donald Trump publicity rally. The quake was at a depth of 7.9 km. Oklahoma has become an earthquake hotspot.