#earthquake-swarm

#earthquake-swarm

An earthquake measuring at a preliminary magnitude of 4.3 shook Sonoma County on Saturday morning around 9:22 a.m., according to the U.S. Geological Survey. The temblor struck about 3.7 miles north-northwest of the Geysers, close to Healdsburg in the North Bay. Originally the quake was measured at a preliminary magnitude of 3.9 but that was revised to a preliminary 4.3 later in the morning by the USGS.

Three minor earthquakes were detected less than 30 miles south of San Jose Friday morning, striking within three minutes of each other between 10.40 and 10.43am ET. The US Geological Survey (USGS) reported that the first tremor registered as a magnitude 3.4 earthquake, and was then followed moments later by magnitude 2.6 and 2.5 quakes. No injuries or damage to local property has been reported at this time.