Move over California, there’s a new earthquake capital.

According to , Oklahoma had three times as many earthquakes as California and remains well ahead in 2015.Hydraulic facturing, or fracking, the process of drilling and injecting fluid into the ground at a high pressure to fracture shale rocks to release natural gas inside, is believed to be the major factor in increasing seismic activity in the Midwest.

(MORE: )Though earthquakes have proven more deadly on the West Coast, none in the Midwest have resulted in deaths, the report notes.The largest Midwest quake in recent years – a magnitude 5.7 – was centered near Prague, Oklahoma, on Nov. 5, 2011, according to the .

MORE ON WEATHER.COM: World's Deadliest Earthquakes, 1990-2013

India: Sept. 29, 1993

The first of two of the top-10 deadliest earthquakes of the last 25 years that occurred in India was a 6.2 temblor that killed 9,748, according to the USGS. (DOUGLAS E. CURRAN/AFP/Getty Images)