Small earthquake hits northwest Dallas

A 3.3-magnitude earthquake hit northwest Dallas on Monday afternoon, the latest of more than 50 in the past 18 months.

The earthquake occurred at 1:14 p.m. Its epicenter was 4 miles north of Irving and 5 miles southwest of Farmers Branch, according to the U.S. Geological Survey.

More specifically, the quake, which was felt by residents in Irving, was north of Texas 348, south of Royal Lane and east of Luna Road, said Jason Carriere, Irving’s emergency management coordinator.

“It was large enough that a lot of people felt it but not nearly big enough to cause any damage,” said Don Blakeman, a geophysicist with the USGS.

The largest quake, which measured 4.0-magnitude, led the Texas Railroad Commission to send in a team of inspectors. The agency, which regulates the oil and gas industry, also asked the operators of five disposal wells in the area to run pressure tests. Scientific studies have linked oil and gas operations to a string of earthquakes near Reno and Azle.

Ramona Nye, a spokeswoman for the state agency, said tests on the wells in Johnson County are still being conducted, but since there are no disposal wells in Dallas County, there are no plans at this time to dispatch inspectors to the area of Monday’s quake.

Max B.Baker, 817-390-7714

Twitter: @MaxbakerBB