An earthquake of magnitude 4.1 shook Paly campus on Thursday morning at 10:09 a.m.

“Things started shaking and everyone but my teacher noticed,” junior Wes Rapaport said.

On a campus so close to the railroad tracks, students and staff are accustomed to frequent rumblings that shake classrooms. Portable classrooms are particularly susceptible to tremors caused by trains.

“I was in a portable and I thought it was the train,” senior Olivia Diamond said. “But then Ms. Van Der burg asked if it was an earthquake or a train and someone looked it up on their iPhone.”

The earthquake, which struck along the Calaveras fault, had an epicenter 6 miles northeast of Milpitas, roughly 10 miles from downtown San Jose.

There have been no reports of significant damage.