(Oklahoma City-AP) -- A new federal study says earthquakes cause an estimated $4.6 million in damage each year to structures across Oklahoma.
The study by the Federal Emergency Management Agency ranks Oklahoma 33rd among the 50 states and the District of Columbia in the cost of potential annual building damage caused by earthquakes.
By comparison, earthquakes can cause an estimated $16.6 million in damage to structures in Arkansas each year and $38.4 million in Missouri.
Oklahoma experiences about 60 earthquakes a year, usually of a magnitude less than the two-point-four to two-point-five range.
Most of Oklahoma's earthquakes occur in Garvin County, where there is a known fault. Some 269 quakes have been recorded there.
An earthquake measuring four-point-two hit between Medicine Park and Richard's Spur in 1998.