A 4.0-magnitude earthquake shook the Trabuco Canyon area Thursday according to the U.S. Geological Survey.
The temblor in eastern Orange County hit at 2:09 a.m. about nine miles northwest of Lake Elsinore at a depth of 6.3 miles, the USGS reported. Residents from Corona, Riverside, Pasadena and Santa Ana reported feeling the jolt.
The USGS originally reported the temblor as a 4.1-magnitude quake in the Lake Elsinore area, but downgraded it to a 4.0-magnitude temblor near Trabuco Canyon.
Some residents said they were awakened by the jolt.
"That was a strange one," said NBCLA Facebook user Donald Gentry, of northwest Riverside County. "It felt unusually strong and seemed to want to stay for coffee."
No injuries or damage were reported.
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The earthquake was in the Elsinore Fault zone, one of the largest fault zones in Southern California. The largest recorded quake on the main fault was a magnitude-6.0 quake in May 1910. The Laguna Salada fault, a southeastern extension, produced a magnitude-7.0 eathquake in the late 1800s.