SONOMA (CBS SF) — The U.S. Geological Survey is reporting that an earthquake with a preliminary magnitude of 2.4 struck Saturday morning in Sonoma County.
Just before 9 a.m., the temblor rattled an area near The Geysers and was centered about 26 miles north of Santa Rosa, according to the USGS.
The earthquake had a depth of 2.1 miles.
The Geysers is the world’s largest geothermal field, according to the U.S. Department of Energy. The region experiences constant seismic events between 0.5 and 3.0 on the Richter scale.
(Copyright 2012 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed)