Mammoth part of recent swarm of U.S. quakes

Mono County got an early wakeup call on Wednesday, Aug. 24, when a magnitude-4.2 earthquake struck the area just before 5 a.m.

According to the U.S. Geological Survey, the tremblor shook parts of the Central and Eastern Sierra at 4:59:51 a.m. The epicenter was located about 9 miles southeast of Mammoth Lakes and roughly 11 miles west of Tom’s Place, at a depth of 6.1 miles.

So far, there have been no reports of serious injury or damage from the quake, which lasted about 10 seconds or so.

The Eastern Sierra joins other locations around the country that have experienced earthquake activity earlier this week. On Monday night, southern Colorado was hit by a magnitude-5.3 quake. That was followed by a similar magnitude-5.8 temblor that struck central Virginia on Tuesday afternoon. And Tuesday night, a magnitude 3.6 quake rumbled through the Bay Area.

The Mammoth quake was classified as a level IV, which is “light,” according to the USGS scale.