BERKELEY, Calif. — A magnitude 4.3 earthquake struck in Berkeley, California early Monday morning, according to the U.S. Geological Survey.

The quake struck at 2:56 a.m. and had a depth of about 4.8 miles. It was originally reported as a magnitude 4.6, but was then downgraded.

The temblor on the Hayward fault line was felt in much of the Bay Area.

The Shake Alert system was activated, and so far, there are no reports of injuries or damage, but it was felt by a lot of people throughout the Bay Area.

A map from USGS shows people felt the most shaking in the East Bay, but people reported feeling the shaking as far north as Santa Rosa and as far south as Salinas.

USGS Seismologist Sarah Minson told our sister station that this is what they consider a small earthquake, even though the shaking from it was enough to wake people up all over the Bay Area this morning.

“Shaking is variable and it depends a lot on your location, what kind of building you’re in, what kind of land you’re standing on,” Minson said. “However, this being such a small magnitude earthquake, shaking from it is going to be pretty low everywhere, certainly enough to be impactful for people, for them to feel it, for it to be upsetting, potentially even to knock over things very close to the epicenter. But in general, we wouldn’t expect to see, for example, structural damage from an earthquake this small.”

The reminder from both the USGS and local first responders is to get and stay prepared for an earthquake larger than Monday morning’s.