Skaters turn quake-damaged road into skate ramp

Local skaters in Napa, California have made the most of a bad situation, turning an earthquake-damaged road into a skate ramp.

A skater taking advantage of a buckled street. (AAP)

State of emergency declared after 6.0 magnitude earthquake

A 6.0-magnitude earthquake in California's Napa hasn't stopped some people from looking on the bright side, wth local skaters turning a damaged road into a makeshft skate ramp.

California's governor declared a state of emergency after the quake seriously injured three people including a child and ignited fires in the scenic Napa valley wine region.

The US Geological Service said that the quake was the most powerful to hit the San Francisco Bay area since the 1989 6.9-magnitude Loma Prieta earthquake.

The quake sent at least a top corner of a brick building tumbling into the street in Napa. Elsewhere it ignited fires, burst water mains and cracked roads in the area.

No deaths were reported but Napa city officials said three people suffered serious injuries after the quake struck at 3:20 am local time on Sunday.