The San Francisco Bay Area felt a slight jostle this morning as a magnitude 3.5 earthquake struck, with an epicenter located merely 6 miles from Daly City at 7:02 AM. According to a Shake Alert report, the tremors were noticeable throughout the region, causing homes to rattle but not resulting in any immediate reports of significant damage.

Not far from Daly City, the earthquake was originally recorded somewhat stronger at a 3.7 close to the San Francisco Zoo. The event was not isolated, striking just a day after a 3.0 magnitude earthquake in Monterey County, which, according to KTVU, caused no initial reports of damage despite being felt in parts of Salinas. While there were no immediate reports of damage, tremors felt by local communities makes the recent seismicity notable.

Providing detail on the geological activity, the U.S. Geological Survey described the event near San Francisco Zoo as being located at a depth of 5.3 km (about 3.3 miles) northwest of the site. The USGS provides a tectonic summary indicating that these seismic events occur along the San Andreas Fault, notorious for its capacity to produce significant earthquakes, as evidenced by historical events such as the devastating 1906 San Francisco earthquake and the 1989 Loma Prieta quake.

Residents are reminded of the seismic nature of California with the USGS previously assigning a 21% probability that the San Andreas Fault could produce a magnitude 6.7 or larger earthquake within the next couple of decades. Yesterday's temblors in Daly City and near the San Francisco Zoo, while moderate, serve as a warning shot across the bow, reminding locals of the unpredictable whims of our planet's tectonic movements. In the face of these recurring shivers under the earth's surface, the community's relief from the apparent minor impact of the 7.0 Humboldt County earthquake earlier, according to a KTVU report, cannot be understated.