Tyler Mears, who lives 30 miles north of the quake's epicenter in Rhondda, South Wales, said when her house began to shake she initially thought of many causes, but it didn't occur to her that it could be an earthquake.
"We live right by a mountain, so at first I thought a car had come down the mountain and crashed into the side of the house," Mears said.
She quickly took to social media, where she said her friends throughout the country said they felt the quake, too.
"We all kind of looked at each other in disbelief," she said. "We have rain and thunderstorms, but never an earthquake."
Although small earthquakes in the United Kingdom are not uncommon, the British Geological Survey said historically quakes above a 5-point magnitude on the Richter scale occur about every decade.