Oklahoma could be in danger of strong Magnitude 6 or Higher EarthquakesIn yet another warning to Oklahoma residents, thousands of tiny earthquakes in the past five years have mostly been annoying. However a new study in Geophysical Research Letters suggests the future could be more dire, with the state possibly seeing larger temblors. It found that the same fault lines that have triggered earthquakes of between 3 and 4 magnitude are capable of producing events as high as 6.  According to a study, led by Dan McNamara, a research geophysicist at the U.S. Geological Survey, found that there were 3,639 earthquakes in Oklahoma between late 2009 and 2014, which was 300 times more than in previous decades. Several of these earthquakes caused damage and many were felt, with over 153,000 individual reports for 474 separate earthquakes entered at the USGS. FULL REPORT