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Magnitude 6.5 Hits the Central Valley, California, December 22
Published: December 22, 2003 11:15 am

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A magnitude 6.5 hit the central valley of California at 11:15am PDT on a series of faults that run parallel to the San Andreas Fault. Dozens of aftershocks have occurred, some as strong as 4.6.

The quake was centered 10.7 miles north of Cambria, according to preliminary data from the U.S. Geological Survey.

There are some reports of damage. 3 buildings in Paso Robles have collapsed and 2 deaths have been confirmed. Many streets have buckled, and phone lines are down.

Preliminary Earthquake Report
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California

A strong earthquake occurred at 19:15:56 (UTC) on Monday, December 22, 2003. The magnitude 6.5 event has been located in CENTRAL CALIFORNIA. The hypocentral depth was estimated to be 8 km ( 5 miles). (This event has been reviewed by a seismologist.)
Magnitude 6.5
Date-Time Monday, December 22, 2003 at 19:15:56 (UTC)
= Coordinated Universal Time
Monday, December 22, 2003 at 11:15:56 AM
= local time at epicenter

Location 35.706°N, 121.102°W
Depth 7.6 km (4.7 miles)
Region CENTRAL CALIFORNIA
Distances 11 km (6 miles) NE (49°) from San Simeon, CA
17 km (10 miles) N (356°) from Cambria, CA
20 km (13 miles) W (260°) from Lake Nacimiento, CA
39 km (24 miles) WNW (283°) from Paso Robles, CA
195 km (121 miles) SSE (158°) from San Jose City Hall, CA
Location Uncertainty horizontal +/- 0.2 km (0.1 miles); depth +/- 0.8 km (0.5 miles)
Parameters Nst= 46, Nph= 46, Dmin=5.4 km, Rmss=0.05 sec, Gp= 83°,
M-type=regional moment magnitude (Mw), Version=3
Source U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Event ID nc40148755

Magnitude 6.5 Quake Image



U.S. Geological Survey and EarthquakeAdvisor.Com



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