Amateur video footage is starting to emerge in Mexico after a 7.2 magnitude quake left at least two people dead and more than 100 injured.
The tremor struck near the US-Mexico border, but was felt as far north as Los Angeles.
One person is reported to have died in a collapsed house in Mexico, the other by a falling wall.
“The building went like this,” one man in Tijuana explained, moving his hand in a rolling motion. “We were out here and saw it. The ground moved quite a lot.”
The quake struck near the border city of Mexicali, but the actual epicentre was in a lightly populated area some 50 kilometres away. The depth of the quake is said to have been just 10 kilometres.
Many buildings have been damaged – mostly cracked walls and floors and broken windows – but no major buildings appeared to have collapsed.
“We were up on the seventh floor and were getting ready to head out for the day, the afternoon, and we started hearing a loud noise,” said a man in San Diego.
“(We thought) the boys were bouncing on the bed so we wanted to make sure and then the whole room started to shake and the room started to make popping, cracking noises.”
For several hours aftershocks continued to rock the area.