3.8 Magnitude Earthquake Rattles San Francisco and the East Bay
Key Points:
- Two smaller earthquakes followed the initial quake at 9:07 a.m., measuring magnitudes 3.0 and 2.8, centered about 2 miles north of San Leandro.
- There were no immediate reports of damage or injuries from the earthquakes.
- BART slowed service systemwide, running trains at reduced speeds while crews conducted safety inspections, causing delays of up to 20 minutes.
- The initial quake triggered ShakeAlert, the West Coast early warning system, which issued its first message 3.7 seconds after the quake started.
- No wireless emergency alerts were sent to phones, as the system only activates for earthquakes estimated at magnitude 5.0 or higher.