Residents across Riverside County reported hearing loud rumbling followed by a strong jolt when a magnitude-3.7 earthquake struck the San Jacinto area Tuesday night.
The temblor hit about 7:38 p.m. at a depth of a little more than 8 miles, the U.S. Geological Survey said. It was followed by a magnitude-2.9 aftershock nearly an hour later.
There were no immediate reports of injuries or damages.
The epicenter was located in a San Jacinto residential neighborhood in the 900 block of Yorkshire Lane, according to the USGS.
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"It felt like it was like, 'Boom!'" said a man who lives in a home in that neighborhood. "It maybe lasted like 15 seconds."
A Twitter user in Winchester described the tremor as a "short jolt." Another user in Moreno Valley said it felt like a "gentle roller."
"It was loud," said Gina Dolce on the NBCLA Facebook page. "Sounded like an explosion."
"Shook here in San Jacinto! It was a loud one. Heard it before I felt it!" said another Facebook user.
"I live in Hemet, and we just moved to CA, so it's our first one. Wow...a little freaked and excited! Did not expect the noise...sounded and felt like a train ran right next to the house," said Jennifer Blenk Walsh on Facebook.
Residents as far away as Diamond Bar, Palm Desert and parts of Orange County reported feeling the shaking.
Gadi Schwartz contributed to this report.