A mild 2.8 magnitude earthquake hit about seven miles southwest of campus Tuesday morning from a depth of 8.6 kilometers below ground, according to the United States Geological Survey. 

The tremor, detected at 1:04 a.m., was the first of four near the same location that day, with the other quakes arriving at 4:56 a.m., 2:10 p.m. and 3:34 p.m. Community reports placed the intensity of the quake at level IV, which is classified as “light.” Locals reported feeling the quake as far as Fremont.

The shakes came after three consecutive quakes at Hayward last Thursday, raising fears that the “Big One” — a major earthquake along the San Andreas Fault — would occur soon. The seismic event is predicted to happen sometime within the next 30 years, according to researchers at the University of California, Berkeley. 

However, normal fluctuations in seismic activity are common, a representative of the USGS Earthquake Science Center told Newsweek, so the recent quakes don’t necessarily indicate imminent danger.

Stanford lies in the San Andreas fault zone, an area of high seismic activity. The San Andreas fault line runs 800 miles (1,287 kilometers) through California and has caused several strong quakes in the state’s history, including two major earthquakes in 1906 and 1989 that inflicted significant structural damage to Stanford’s campus.

A previous version of this said the shakes came after four consecutive quakes. It was three consecutive quakes. The Daily regrets this error.