SOUTH LAKE TAHOE, CA—The mountains about 70 miles Southeast of the Lake Tahoe area where hit by a cluster of over 30 earthquakes on Wednesday, December 28. The largest earthquake hit at 12:18 a.m. and was measured at a 5.7 magnitude. The second, a twin magnitude of 5.7 struck shortly after at 12:22 a.m and a third earthquake hit at 1:14 a.m. and was measured at a 5.5 magnitude of.

No injuries were immediately reported. One resident of Folsom reported seeing a new crack on her home’s wall and ceiling. The Mineral County Sheriff’s Department in Hawthorne reported staff members felt the twin 5.7 quakes, which did trigger two businesses’s security alarms and caused a rock slide. The rock slide did not block any roadways.

Several aftershocks followed the second 5.7 earthquake, before the smaller 5.5 magnitude earthquake struck. Most of the cluster earthquakes were within the 2 or 3 magnitude range. Earthquakes of such measures are typically felt, but normally do not cause any physical damage.