Lots of video at the link.
http://www.kcra.com/news/17028325/detail.html
Southern California Quake Results In Minor Injuries, Damage
Temblor Centered Near Chino Hills
POSTED: 11:50 am PDT July 29, 2008
UPDATED: 3:59 pm PDT July 29, 2008
LOS ANGELES -- A strong earthquake shook Southern California on Tuesday, causing buildings to sway and triggering some precautionary evacuations. Some minor damage was reported, along with five minor injuries and people stuck in elevators.
The jolt was felt from Los Angeles to San Diego, and slightly in Las Vegas.
The state Office of Emergency Services reports scattered minor infrastructure damage, including broken water mains and gas lines.
The 11:42 a.m. quake was initially estimated at 5.8 but was revised downward to magnitude 5.4, said seismologist Kate Hutton of the U.S. Geological Survey office in Pasadena. More than a dozen aftershocks quickly followed. The largest were magnitude 3.8.
The quake was centered 29 miles east-southeast of downtown Los Angeles near the San Bernardino County city of Chino Hills.
"We've had some minor reports of some water main breaks and some other service outages, but nothing of a significant enough magnitude to be a threat to life at this point," said Kelly Huston of the state Office of Emergency Services.
Freeway traffic in the area appears normal.
The OES office in Rancho Cordova was activated to help with any response to the temblor.
Huston urged people outside of the Los Angeles area not to call friends and relatives who live near the quake epicenter because phone service in the area was sporadic.
Gov. Arnold Schwarzenegger was briefed about the quake and spoke to Los Angeles Mayor Antonio Villaraigosa, police and other local leaders.
"Our state Office of Emergency Services has reached out to local governments in the affected area to ensure that levees, bridges and other critical infrastructure are inspected and declared safe," Schwarzenegger said in a prepared statement. "We are activating our regional and state emergency operations centers and will continue monitoring the situation closely."
A meeting at Los Angeles City Hall was disrupted. Workers quickly evacuated some other Los Angeles buildings.
The magnitude-5.9 Whittier Narrows quake in 1987 was the last big shake in that area. That quake heavily damaged older buildings and houses in communities east of Los Angeles.
"It was dramatic. The whole building moved and it lasted for a while," said Los Angeles County sheriff's spokesman Steve Whitmore, who was in the sheriff's suburban Monterey Park headquarters east of Los Angeles.
As strongly as it was felt, the quake was far less powerful than the magnitude-6.7 Northridge earthquake that badly damaged the region on Jan. 17, 1994. That quake was the last damaging temblor in Southern California.
No electrical outages were reported in Los Angeles due to the quake, said Department of Water and Power spokeswoman Kim Hughes.
In Orange County, about 2,000 detectives were attending gang conference at a Marriott hotel in Anaheim when a violent jolt shook the main conference room.
Mike Willever, who was at the hotel, said, "First we heard the ceiling shaking, then the chandelier started to shake, then there was a sudden movement of the floor."
Chris Watkins, from San Diego, said he previously felt several earthquakes, but "that was one of the worst ones."
Delegates and guests at a cluster of hotels near the Disneyland resort spilled into the streets immediately after the quake.
Joseph Maddalena, who runs the historical documents and memorabilia dealer Profiles in History, was on the phone in his office in Calabasas, near Malibu, when the earthquake struck. He quickly put down the phone and ran to check on his 14-year-old son who had come to work with him as he prepared for a Thursday auction of 1,100 pieces of Hollywood movie memorabilia.
"Our building shook pretty good," he said after discovering his son and his employees were unharmed and the building was fine.
"The window in my office kind of bowed out but it's all right now. Everything is fine," he said.