A 4.6 magnitude earthquake rocked the East Bay in San Francisco early this morning.

The quake struck at 2.56am at a depth of 7.8 kilometres.

An early estimate suggested the epicentre was around the corner of Dwight Way and Piedmont Avenue, near the UC Berkeley campus, the LA Times reports.

The earthquake was felt near the San Francisco International Airport as an early warning app sounded on phones in the area.

Residents in Walnut Creek, Martinez, Alameda and across the Bay in San Francisco were also affected. 

San Francisco Fire Department said there were no reports of damage or injuries in the city.

They advised people to be wary of aftershocks and check for hazards, like gas leaks.

A green alert was issued for shaking-related fatalities and economic losses. A tsunami was not expected.

The epicentre appeared to be near the UC Berkeley campus

The U.S. Geological Survey (USGS) said: ‘There is a low likelihood of casualties and damage.’

The quake occurred along the Hayward fault line, ABC7 news reported, just days after a minor 3.5 magnitude tremor rocked the Bay Area last Monday.

Last week’s temblor occurred at 3pm about five miles east of Clayton, with a depth of four miles, according to the USGS.

Residents reported feeling light shaking across the region.

Three days later, a 7.8 magnitude earthquake off Russia’s east coast set off tsunami alerts in Alaska and Hawaii.

Thursday’s quake, near the Petropavlovsk-Kamchatsky region, saw more than a dozen aftershocks, ranging from 4.8 to 5.6 magnitude.

Residents near the epicentre were warned of potential coastal flooding or damage in low-lying areas.

This news is breaking: more to follow