A 5.7-magnitude quake struck outside Salt Lake City, Utah, US, early on Wednesday, the country's Geological Survey reports.
According to the Utah Division of Emergency Management, this was the largest quake in the area since 1992.
The quake was registered at a depth of 9.3 kilometres at 07:09 am, the US Geological Survey said.
No injuries or damage have been reported so far.
Aftershocks are very likely during the day, the division added.