A large earthquake has struck just off the coast of northern California, sparking a temporary tsunami warning.
There are no reports of casualties and the tsunami warning, stretching from Mexico to Canada, has been cancelled.
The quake happened 10km under the sea at 8pm on Tuesday evening local time, and measured 7 on the Richter scale.
It's the third quake in the area in 48 hours. On Monday one struck in Chile killing eight people, and a second was felt off Alaska on Tuesday.
Witnesses reported that buildings shook following the Califirnian earthquake, but so far there have been no reports of damage.
In Crescent City, about 483 km north of San Francisco, telephone lines were jammed and local residents left low-lying areas near the coast, after an emergency warning siren sounded.
But officials soon gave the all clear and people returned to their homes.
In 1964 a tsunami hit Crescent City, California in the low-lying community killing 11 people.