Geology
Oxnard is subject to earthquakes due to its location near the San Andreas Fault.
One active fault line that transverses Oxnard is the Oak Ridge Fault, which straddles the Santa Clara River Valley westward from the Santa Susana Mountains, crosses the Oxnard Plain through Oxnard, and extends into the Santa Barbara Channel.
The fault has proven to be a significant contributor to seismic activity in the Oxnard region and beyond. The Northridge earthquake, a devastating magnitude 6.7 temblor that occurred on January 17, 1994, is believed to have occurred in the Santa Clarita extension of the Oak Ridge Fault. Landslides and ridge-top shattering resulting from the Northridge Earthquake were observed above Moorpark, a city just east of Oxnard.
A quake with a preliminary magnitude of 3.2 struck at 9:53 pm centered at four miles (6 km) east-southeast of the city of Oxnard on October 16, 2009.
Another earthquake of magnitude 2.9 struck around 11:55 pm on April 28, 2010.
Another earthquake of magnitude 3.9 struck around 8:20 pm on May 14, 2010.
Read more about this topic: Oxnard, California