Magnitude 4.0 quake rattles Oklahoma

Earthquake preps Elementary school children in California practice an earthquake drill at school by dropping, covering and holding in the event of a catastrophic quake. Children in parts of the central U.S. may need to add quake drills to the common tornado drills, as well, with an uptick in human-induced earthquakes in the region. (David McNew/Getty Images)

By April Hill

STROUD, Okla. — The U.S. Geological Survey reports that three earthquakes hit Oklahoma Wednesday.

The biggest, a magnitude 4.0 temblor near Stroud.

Two smaller quakes were also recorded. A magnitude 2.7 quake struck near Fairview and a magnitude 2.5 temblor hit near Mooreland.

Geologists say damage is not likely in earthquakes below magnitude 4.0.

No injuries or damage were reported.

Thousands of earthquakes have been recorded in Oklahoma in recent years.

Many quakes have been linked to the underground injection of wastewater from oil and natural gas operations.

Regulators have directed oil and natural gas producers to close some disposal wells or reduce the volume of fluids they inject.