4.2 Magnitude Quake Strikes San Ramon Amidst Ongoing Swarm

A 4.2 magnitude earthquake occurred near San Ramon, California, on Monday morning, according to the U.S. Geological Survey (USGS). This event followed a 3.8 magnitude quake and a series of over 30 tremors in the area.

The 4.2 tremor struck at 7:01 a.m., approximately 9.4 km in depth, marking the most significant event in a recent series.

Tremor Details

The initial 3.8 magnitude quake occurred earlier, at 6:27 a.m., preceding the larger tremor and followed by numerous additional seismic events. These tremors have been concentrated in the San Ramon area.

Impact and Response

Fortunately, no injuries have been reported following the tremors. However, visual evidence from a San Ramon 7-Eleven store indicated products fell from shelves during one of the earthquakes, highlighting the shaking intensity.

In response, Bay Area Rapid Transit (BART) temporarily reduced train speeds to conduct track inspections. This is a standard safety procedure implemented during seismic events to ensure track integrity.

Ongoing Seismic Activity

The USGS stated this activity is a continuation of a swarm of quakes experienced in the area. Dozens of tremors have been reported in the region since November, indicating a period of increased seismic activity.