San Francisco residents got a jolt Saturday – and it wasn’t just from their morning coffee. A 3.5-magnitude earthquake shook the Bay Area, jangling nerves but not resulting in reports of damage or injuries.
The quake struck at 8:41 a.m. PST, centered 3.7 miles west-southwest of the Bay Area enclave of Colma, the U.S. Geographical Survey reported. But area residents taking to Twitter indicated it was felt from Sunnyvale, in California’s Silicon Valley, to Berkeley in the East Bay.
“Wow that was a good shake, rattle and roll!” wrote KRON-TV reporter Maureen Kelly on Twitter.
Residents mostly talked about how the shaking struck while they were in bed or in the bathroom, or they talked about how their pets reacted.
“My cats were not amused,” said Edie Schaffer, who works in emergency management in the area, also on Twitter.
Some agencies also used nature’s wake-up call to remind residents to take preparations against the far bigger quakes that are expected in California.
San Francisco was devastated by a 1906 earthquake and fire that killed hundreds. In 1989, sections of the Bay Area were crippled by the Loma Prieta quake, which measured a magnitude of 6.9.
This article originally appeared on USA TODAY: San Francisco earthquake: 3.5 quake strikes Bay Area