Overview
- A magnitude-5.6 earthquake struck about 7 miles north of Redwood Valley at 8:10 a.m. local time on Wednesday, with the USGS reporting a shallow depth of roughly 8.1 kilometers.
- Many residents across Mendocino, Sonoma and parts of the Central Valley felt strong shaking and received ShakeAlert phone warnings that briefly showed a larger magnitude before the USGS revised it to 5.6.
- At least one small aftershock, magnitude 2.5, occurred minutes after the main shock and officials say more aftershocks are expected in the hours and days ahead.
- Gov. Gavin Newsom was briefed and state and federal agencies including Cal OES and the USGS are coordinating rapid assessments; there are no immediate reports of major damage or injuries.
- Because the epicenter was inland the National Tsunami Warning Center said no tsunami was expected, and seismologists are evaluating whether the quake involved local faults such as the Maacama or nearby San Andreas structures.