An earthquake recorded around 1:47 p.m. Thursday rattled the Red Rock Canyon area west of Las Vegas, with the U.S. Geological Survey putting the quake at magnitude 3.8 after first listing it at 4.1. The shaking reached beyond the immediate area, with reports coming in as far west as Pahrump, and there were no immediate reports of damage.
The quake was centered about seven miles west of Summerlin, putting the event in one of the most visible parts of the Las Vegas valley’s edge and making it the sort of jolt people notice quickly on a weekday afternoon. For readers searching earthquakes today, this was the significant event: a relatively small but widely felt quake, with the USGS also saying there is a 33% chance of a 3.0-plus aftershock within the next week.
The federal agency’s first pass at the seismic picture did not stay stable for long. Before settling on the 3.8 reading for the Las Vegas-area quake, it had also briefly reported a separate 3.1-magnitude earthquake north of Mesquite, Nevada, then later removed that report from its website. That kind of revision is common enough in the first minutes after shaking is detected, when early readings can change as more data comes in from monitoring stations.
For now, the practical takeaway is simple: the main quake near Summerlin appears to have been modest, but it was broad enough to be felt across a wider swath of southern Nevada, and the ground may not be done moving yet. If the forecast bears out, the next week could bring another, smaller jolt that keeps Thursday’s quake in the conversation longer than its size alone would suggest.
