PAWNEE, Okla. (AP) — One of Oklahoma’s largest earthquakes on record rattled other parts of the Midwest on Saturday from Nebraska to North Texas, and likely will turn new attention to the practice of disposing oil and gas field wastewater deep underground.
The United States Geological Survey said a 5.6 magnitude earthquake happened at 7:02 a.m. Saturday in north-central Oklahoma, a key energy-producing region. That matches a November 2011 quake in the same region.
Columbia news station KMIZ reported it received reports from callers who felt the earthquake as far away as Moberly, Columbia and Callaway County. Democrat readers in Sedalia, Smithton, La Monte and Green Ridge have reported experiencing the earthquake.
The National Weather Service in Kansas City reports the earthquake was felt across eastern Kansas up to northern Missouri and that no damage has been reported across the area.
Geologists say damage is not likely in earthquakes below magnitude 4.0; no major damage was immediately reported Saturday.
People in Kansas City and St. Louis, Missouri; Fayetteville, Arkansas; Des Moines, Iowa; and Norman, Oklahoma, all reported feeling the earthquake. Dallas TV station WFAA tweeted that the quake shook their studios, too.
Saturday’s quake was centered about 9 miles northwest of Pawnee, Oklahoma, which has a population of about 2,200. Earlier this week, the same spot, which is about 70 miles northeast of Oklahoma City, saw a magnitude 3.2 temblor.
An increase in magnitude 3.0 or greater earthquakes in Oklahoma has been linked to underground disposal of wastewater from oil and natural gas production. State regulators have asked producers to reduce wastewater disposal volumes in earthquake-prone regions of the state. Some parts of Oklahoma now match northern California for the nation’s most shake-prone, and one Oklahoma region has a 1 in 8 chance of a damaging quake in 2016, with other parts closer to 1 in 20.
A cluster of quakes in northwestern Oklahoma this year included a magnitude 5.1 earthquake, and several 4.7 quakes were felt last fall before regulators stepped in to limit disposal activity.