San Francisco: An earthquake of magnitude 5.1 struck the San Francisco Bay area on Wednesday. However, there were no immediate reports of damage or injuries.
According to US geological survey, the earthquake occurred at around 11:42 GMT.
The earthquake was centred 12 miles (19 kilometres) east of San Jose at a depth of about 4 miles (6 kilometres) at about 40 miles (64 kilometres) southeast of downtown San Francisco, said US geological survey.
Nearly 100,000 people reported receiving a warning before the shaking began.