An earthquake measured at 6.5 struck at 6:49 a.m. Thursday about 100 miles off the coast of Northern California, the U.S. Geological Survey reported.
The center of the quake was 105 miles west of Eureka and 100 miles west of Ferndale, the USGS said. The service issued no tsunami warning.
There were no immediate reports of damage or injuries.
Bonnie Brower, owner of the Ferndale Pie Company, says she was grabbing something from the fridge in the restaurant's kitchen when the quake happened. She did not see any damage, but felt a "big jolt."
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"I just felt this very huge jerk and I didn't know what it was," she said.
Afterward, she said it felt like the ground was rolling, "like you were on a boat."
Dennis Gorton, who owns the Francis Creek Inn in Ferndale, said there was no damage and none of the guests panicked.
"It was just kind of a roller," he said. "Nothing was thrown off the shelves or anything like that."
In January 2010, a 6.5 magnitude quake in the Pacific caused about $34 million in property losses in and around Eureka, including partial damage to at least nine buildings.
The area experienced a magnitude 7.2 earthquake in 1992 that left 95 people injured and caused millions of dollars in damage, according to the USGS. That earthquake was felt as far south as San Francisco.
It was followed by a magnitude 6.5 earthquake about 12 hours later and a magnitude-6.7 earthquake a few hours after that, both of which caused additional damage.