The Nevada Seismological Lab originally reported the magnitude as 4.3, but the geological survey’s revised estimate put it at 4.2. Several aftershocks followed, the largest 3.1. A magnitude 2.9 quake was reported earlier closer to the north shore at 4:59 a.m.
The event follows a series of earthquakes May 6 north of Lake Tahoe, about 27 miles (45 kilometers) west of Reno and the largest magnitude of those quakes was 4.7. None caused any damage.
The geological survey estimated the depth of Friday’s temblor at 5.5 miles (9 kilometers). It said structural damage was not expected from a quake that shallow.