Two more aftershocks near Tonopah both measuring magnitude 5.4 struck the area a short time later.
There were no immediate reports of damage or injuries in the small town of Tonopah, located about three hours north of Las Vegas.
Part of U.S. 95 was closed as state troopers and sheriff’s deputies from Esmeralda and Mineral counties checked that highway and State Route 360 for possible damage, the Mineral County sheriff’s office said.
The Nye County sheriff’s office was also checking a report of possible damage to U.S. 95, Capt. David Boruchowitz told KSNV-TV in Las Vegas. “Other than that, just a bunch of people shaken up.”
The quake first struck just after 4 a.m. local time. It was originally classified as a 6.4 before being bumped up to a 6.5.