HELENA, Okla. (AP) – An earthquake has shaken part of northern Oklahoma near the Kansas border.
The U.S. Geological Survey says the 3.2 magnitude earthquake occurred at about 12:40 p.m. about 14 miles east-northeast of Helena in Alfalfa County. Helena is about 86 miles northwest of Oklahoma City and about 30 miles south of the Kansas border.
Geologists say the temblor occurred at a depth of about 2 miles.
No damage or injuries were immediately reported. Geologists say earthquakes of magnitude 2.5 to 3.0 are generally the smallest that are felt by humans and damage is not likely from earthquakes below magnitude 4.0.
The Oklahoma Geological Survey has said it is likely that many recent earthquakes in the state are being triggered by the injection of wastewater from oil and natural gas drilling operations.