also occurring near Johannesburg prior to this quake. Magnitude measures the energy released at the source of the earthquake, the U. S. Geological Survey says. It replaces the old Richter scale.

KERN COUNTY, CA - Tuesday morning, a 2.1 magnitude quake was reported close to Johannesburg, according to the U.S. Geological Survey. It was reported that a tremor struck the area at 8:42 a.m. The ...

KERN COUNTY, CA - A 3.1 magnitude quake was registered near Johannesburg around midday Monday, the U.S. Geological Survey reported. At 11:24 a.m., the area was rattled by a tremor. The earthquake ...

A 6.1 magnitude earthquake struck offshore from South Africa on Saturday, according to the U.S. Geological Survey (USGS).

KERN COUNTY, CA - A 2.4 magnitude quake was detected near Johannesburg at midday on Monday, according to the U.S. Geological Survey. It was reported that a tremor struck the region at 11:28 a.m. The ...