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From http://www.usgs.gov/newsroom/article.asp...2iIXKw0p9Q

Quote:Record Number of Oklahoma Tremors Raises Possibility of Damaging Earthquakes

The rate of earthquakes in Oklahoma has increased by about 50 percent since October 2013, significantly increasing the chance for a damaging quake in central Oklahoma.

In a new joint statement by the U.S. Geological Survey and Oklahoma Geological Survey, the agencies reported that 183 earthquakes of magnitude 3.0 or greater occurred in Oklahoma from October 2013 through April 14, 2014. This compares with a long-term average from 1978 to 2008 of only two magnitude 3.0 or larger earthquakes per year. As a result of the increased number of small and moderate shocks, the likelihood of future, damaging earthquakes has increased for central and north-central Oklahoma.

From http://earthquake.usgs.gov/regional/ceus...022014.php

Quote:Record Number of Oklahoma Tremors Raises Possibility of Damaging Earthquakes

The rate of earthquakes in Oklahoma has increased remarkably since October 2013 – by about 50 percent – significantly increasing the chance for a damaging magnitude 5.5 or greater quake in central Oklahoma.

Brian