- UPDATE: Friday morning, the USGS upgraded the rating to a 4.3
- The USGS said a 3.9 magnitude earthquake struck Grant County between Lamont and Pond Creek Thursday night.
- The earthquake hit in a rural area about two hours northwest of Tulsa.
- Grant County Sheriff's Office says they have not had any reports of damage.
- The earthquake was felt in Coffeyville, KS and Terlton, OK.
- An earthquake has rattled parts of northern Oklahoma and southern Kansas.
The U.S. Geological Survey reports the magnitude-3.9 quake struck about 9 miles southeast of Medford, Oklahoma, on Thursday night.
No injuries or damage was immediately reported. Medford is more than 90 miles north of Oklahoma City.
A smaller 2.5-magnitude earthquake was recorded around 5 p.m. Thursday roughly 10 miles west of Harper, Kansas.
Thousands of earthquakes have been recorded in Oklahoma in recent years. Many of them have been linked to the underground injection of wastewater from oil and natural gas production operations.
State regulators have directed oil and gas producers to close some wells and reduce injection volumes in others.
Cox Media Group