Created with Raphaël 2.1.2
2015
100
680
200
300
400
500
600
1
2000
0
2001
3
2002
0
2003
2
2004
2
2005
3
2006
1
2007
2
2008
20
2009
35
2010
64
2011
36
2012
109
2013
585
2014
680
2015
At magnitude 3.0, earthquakes are strong enough for people to feel but usually only cause minor, if any, damage to buildings. Hundreds of magnitude-2.0 quakes are also striking Oklahoma but are often undetectable above ground.