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BERKELEY, California — A 4.5 magnitude earthquake struck early Thursday in Berkeley, California, according to a report from the US Geological Survey, shaking up some residents of the densely populated San Francisco Bay area awake in their beds.

A 4.5 magnitude earthquake that shook the Bay Area on Jan. 4, 2017, is on a map provided by the U.S. Geological Survey.

The earthquake hit at 2:39 a.m. and had a center near the Berkeley-Oakland boundary along the Hayward fault, which sits atop a densely populated area.

There were no immediate reports of damage in and around the area, the state Governor’s Office of Emergency Services said.

Authorities did not expect major damage because of the quake, but “there’s always a possibility of some minor damage to older structures in the area,” U.S. Geological Survey seismologist Robert Sanders told.

Some residents in the area told that the quake shook them awake. A quake of this intensity generally would produce moderate shaking felt by nearly everyone near the center, awakening many people and having the potential to break some windows and dishes, the USGS says.

“It shook our house and shook the bed big time,” Gina Solis of San Rafael, across the San Francisco Bay from Berkeley, told.

In Hayward, a few miles southeast of Oakland, Robert Hilton says he also woke up to a sensation that something might be running into his house.

The area’s commuter trains will be delayed in the morning so that inspectors can check the tracks, Bay Area Rapid Transit said on Twitter.

The Hayward Fault passes through Berkeley and extends through several cities on the east side of the Bay Area.

According to the Los Angeles Times, the fault could produce a magnitude 7 or greater tremblor. Therefore, we’re lucky that the earthquake wasn’t more serious.