A magnitude-2.9 earthquake struck the Peninsula Wednesday night, according to the USGS.
The temblor reported at 8:24 p.m. and within the San Andreas Fault system was centered in Ladera, just a few miles from the Stanford University campus and downtown Palo Alto, with a depth of 2.6 miles. The shallow quake was felt by residents in the area who reported feeling a "quick jolt."
"Wow, so close we felt it hard!" Laure Cetin said in a tweet to NBC Bay Area. "Very short though."
Others who felt the quake thought it might be connected to the magnitude-6.0 quake that struck the Napa region on Aug. 24.
Stanford employee Yoo-Yoo Yeh initially thought Wednesday's small quake was an aftershock.
"But when I looked it up I saw it's supposed to southwest of us," she said. "So that's a little more concerning."
The last major rupture of the San Andreas Fault was the magnitude-6.9 Loma Prieta quake in 1989.
— Rob Mayeda (@RobMayeda) September 4, 2014