6.4 earthquake rocks Southern California, Nevada

Posted: Updated:
SAN FRANCISCO (AP/KAKE) -

The Latest on a quake felt in Southern California and Nevada (all times local):

Ridgecrest, California, Mayor Peggy Breeden says firefighters are working to put out five fires in the area following an earthquake but that she didn't know if any injuries have been reported.

   Breeden tells CNN utility workers are assessing broken gas lines and turning off gas where necessary.

   Breeden says the local senior center was holding a Fourth of July event when the quake hit. She says everyone made it out shaken up but without injuries.

   The 6.4 magnitude quake struck at 10:33 a.m. local time Thursday in the Mojave Desert, about 150 miles northeast of Los Angeles, near Ridgecrest. It is the strongest quake to hit the region in 20 years.

   Seismologist Lucy Jones says a series of aftershocks were occurring and that at least one of them was a 4.3 magnitude temblor. She expects more throughout the day.

12:05 p.m.

Veteran seismologist Lucy Jones says the earthquake Thursday was the strongest to hit Southern California in 20 years.

She says the previous large quake was a 7.1 on that struck in the area on October 16, 1999.

Jones told reporters at the California Institute of Technology in Pasadena, California, that the 6.4 quake centered in the Mojave Desert near the town of Ridgecrest was preceded by a magnitude 4.3 temblor about a half hour earlier.

She says it was vigorous aftershock sequence occurring and that she wouldn't be surprise if a magnitude 5 quake occurred during the aftershocks.

There were reports of at least one house fire in Ridgecrest.

There were no immediate reports of injuries in the Los Angeles area, which is about 125 miles (240 kilometers) southwest of Ridgecrest.

11:40 a.m.

Officials in Southern California say emergency crews are responding to at least 24 medical and fire incidents after a 6.4 magnitude earthquake struck near Ridgecrest, California. There were no immediate reports of injuries in the Los Angeles area, which is about 125 miles (240 kilometers) southwest of Ridgecrest.

The Kern County Fire Department says it is sending search and rescue teams to the town of 28,000 people.

The quake measured with a preliminary magnitude of 6.4 struck Thursday morning in the Mojave Desert.

People from Las Vegas to the Pacific Coast reported feeling a rolling motion that shook shower doors and made hanging dining room light sway.

10:51 a.m.

An earthquake that struck Wednesday morning in the Mojave Desert rattling a large swath of Southern California was also felt in neighboring Nevada. It was not immediately known if it caused major damage or injuries.

The quake measured with a preliminary magnitude of 6.6 struck Wednesday morning near the town of Ridgecrest, California, about 150 miles (240 kilometers) northeast of Los Angeles. It was downgraded to a 6.4.

People from Las Vegas to the Pacific Coast reported feeling a rolling motion that shook shower doors and made hanging dining room light sway.

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