Magnitude 4.0 quake hits San Francisco Bay Area

An natural disaster with preliminary magnitude of 4.0 struck near Fremont…

The Alfalfa County Sheriff’s Office said there were no immediate reports of injuries or damage.

Fremont sits at the southern end of the Hayward Fault, which saw its most serious quake in 1868. It killed one person, injured 200 and caused $400 million in property damage.

The strongest Oklahoma natural disaster on record is a 5.6 quake centered in Prague in November 2011.

In the last 10 days, there have been no earthquakes of magnitude 3.0 or greater centered nearby. “Since then, there have been 14 aftershocks, the largest which was a magnitude 2.7”, explained AnneMarie Baltay with the U.S. Geological Survey. Brocher urged residents to take steps to prepare for a major natural disaster. Residents across the Bay Area, including those in Pleasanton, San Ramon and in San Francisco, tweeted about being awakened by the quake.

The 2003 Working Group for California quake Probability assigned a 27% probability that the Hayward-Rodgers Creek Fault system would produce a magnitude 6.7 or larger quake in the next 30 years.

The quake struck around 2:41 a.m., according to the USGS. BART is running 15-20 minute delays to inspect tracks for any possible natural disaster damage.