A magnitude 4.1 earthquake jolted the Napa Valley on Thursday night, offering a brief reminder of last summer's 6.0 quake that caused millions of dollars in damage in the heart of the state's winemaking region.
The earthquake was centered about six miles from Yountville, and occurred at 7:53 p.m. at a depth of 5 miles, according to the U.S. Geological Survey.
The quake sent light tremors through Napa and Sonoma, with weak shakes reaching the Bay Area and Sacramento's suburbs, according to the USGS.
"It was enough to shake all my bottles and I ran out from under the bar," said Cassie Gesiakowski, the bartender at Hurley's Restaurant in Yountville.
"Nothing broke, just some rumbling and people holding onto their chairs," she said.
Gesiakowski, a native of Albuquerque, said Thursday's restaurant patrons were a mix of out-of-town visitors and locals, with the latter group recalling the most recent "big one."
In August, a magnitude 6.0 earthquake struck Napa County, injuring nearly 300 people, damaging more than 1,000 buildings and temporarily leaving about 70,000 customers without power. Scores of aftershocks rattled the region.
Thursday's earthquake was originally reported as magnitude 4.3 but was later downgraded by the USGS. In the past 10 days, one other earthquake with a magnitude 3.0 or greater has occurred nearby.
Read more about Southern California earthquakes.