SAN FRANCISCO (AP) — Two small, back-to-back earthquakes shook San Francisco Bay area residents awake Monday morning but appeared to leave no serious damage or injury.
The U.S. Geological Survey reported that a magnitude-3.5 quake struck at 5:33 a.m. about eight miles northeast of San Francisco in the city of El Cerrito. It was followed eight seconds later by a magnitude-4.0 temblor, said geophysicist Paul Caruso. The USGS originally reported that the first quake had a magnitude of 2.9.
The shaking was felt within a 60-mile radius, from Santa Rosa in the north to Santa Cruz in the south.
The California Highway Patrol, San Francisco police and El Cerrito police said they didn't receive any immediate reports of injury or damage.
Bay Area commuter trains were briefly delayed after the quake to inspect the tracks.
Seismologists said the quake appeared to occur on the Hayward Fault, a seismically active fault that runs along the eastern San Francisco Bay. A 2003 USGS report said the Hayward Fault had the highest chance — 27 percent — of producing a large earthquake of magnitude-6.7 or higher in the Bay Area within 30 years.
"We know that the Hayward Fault is the really important fault in the Bay Area," USGS seismologist David Schwartz told KGO-TV on Monday. "These earthquakes, these 4's, are just an indication of ongoing activity, ongoing stress on the fault. They do nothing to relieve the likelihood of something larger happening."
Overall, there was a 62 percent probability that the Bay Area would see a large quake by 2032, according to the report.
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Winter is invading Texas with a vengeance as snow, sleet and ice were unleashed on much of northern and western sections of the state.
A man is expected to survive after being stabbed in the head at the Salvation Army shelter in Downtown Austin at about 3:45 a.m. Friday.
Investigators are looking into an overnight fire that left one woman with third-degree burns.
Caldwell County residents gathered Thursday evening to organize their fight against a proposed landfill that they say poses a hazard that they don't need.
The pastor of the Austin church attended by the teacher who was killed Thursday in Benghazi remembered him as a spiritual friend dedicated to improving the lives of others.
In just a few months, Pflugerville will be home to a new water park. It's just the latest development as the community becomes a major suburb.