San Leandro, California—An earthquake initially reported as
near magnitude 4.0 shook the San Francisco Bay Area early Thursday morning,
with its epicenter located near San Leandro.
According to the U.S. Geological Survey (USGS), the quake
occurred around 8:30 a.m., approximately 2.4 miles north of San Leandro and at
a depth of about 3.2 miles. The agency initially reported a magnitude of 4.1,
but later adjusted it to 3.8.
The tremor was felt across large areas of the Bay Area,
including San Francisco, Oakland, Alameda, Fremont, Hayward, Livermore, and
other East Bay communities.
The quake occurred near the Hayward Fault, one of the
region's major seismic faults. No significant damage was immediately reported.
Following the main earthquake, two aftershocks were recorded around 9:07 a.m.,
with magnitudes of 3.0 and 2.8, respectively.
As a precaution, the BART transit system temporarily reduced
train speeds while track inspections were conducted. Service later resumed
normal operations, although delays of up to 20 minutes were reported.