California has been investigating earthquakes more closely lately following the increased amount of shallow earthquakes throughout the state. Seismologists from USGS and CISN (California Integrated Seismic Network) have been studying seismic events over the last month.
Shallow earthquakes have a greater impact potential than deeper earthquakes because the waves from deeper quakes have more space to travel and weaken before they reach the surface. With shallow quakes, the impact is felt instantly at the surface level.
The five earthquakes reported below have been investigated more closely than others. Since the documented earthquakes have taken place in a region accustomed to seismic activity, there is no need to panic. The following earthquakes have been documented by USGS, one of the few credible and globally-recognized seismic activity monitoring systems. UTC is an abbreviation for Coordinated Universal Time.
Magnitude 5.6 Earthquake Struck 108 km West of Petrolia, California: On 21 May 2023 at 6:44 PM UTC, a magnitude 5.6 earthquake struck Petrolia, California, at a depth of 10 km.
Magnitude 4.5 Earthquake Struck 2 km Northwest of The Geysers, California: On 3 June 2023 at 12:01 PM UTC, a magnitude 4.5 earthquake struck The Geysers, California, at a depth of 3.8 km.
Magnitude 3.2 Earthquake Struck 10 km Northeast of Julian, California: On 4 June 2023 at 4:43 AM UTC, a magnitude 3.2 earthquake struck Julian, California, at a depth of 7.7 km.
Magnitude 3.1 Earthquake Struck 21 km South of Santa Barbara, California: On 4 June 2023 at 4:41 PM UTC, a magnitude 3.1 earthquake struck Santa Barbara, California, at a surface level depth.
Magnitude 2.5 Earthquake Struck 6 km East of Santa Rosa, California: On 5 June 2023 at 8:22 AM UTC, a magnitude 2.5 earthquake struck Santa Rosa, California, at a depth of 7.1 km.