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News Review
Earthquake Information
Posted Date: 5/26/2009

Listed below is information from the United States Geological Survey (USGS) regarding the 4.7-magnitude earthquake on Sunday, May, 17, 2009 at 8:39 p.m. Twenty minutes after the earthquake, Newport Beach RACES completed a full check-in of all RACES and CERT Communicators and 8 RACES volutneers and 12 CERT Communicators checked in and reported the status of their neighborhoods. This most recent earthquake on the Newport-Inglewood fault highlights the importance of community preparedness.

  • Build a disaster supply kit with enough food and water for your entire family for a minimum of 3 days
  • Develop a family plan and discuss it with all family members
  • Remember to plan for family members with special needs and don't forget your pets
  • Get trained- join the Newport Beach Community Emergency Response Team to learn valuable life saving skills and how to prepare your neighborhood for unexpected disasters

For further information on the most recent earthquake go to: Additional questions or for information on the Newport Beach CERT program call (949) 644-3112 or e-mail

"A magnitude 4.7 earthquake struck about 3 miles east of Los Angeles International airport at 8:39 p.m. (PDT) local time, at a depth of 8.5 miles. Given that the location is in a densely populated part of the Los Angeles basin, it was widely felt. Initial estimates from the USGS ShakeMap indicate that although strong shaking will have been felt by many people, damage is expected to be light.

The initial focal mechanism is consistent with slip on the Newport-Inglewood fault, which was the source of the damaging 1933 Long Beach earthquake. Three of the early aftershocks, however, are west of the Newport-Inglewood fault trend. Later aftershocks are expected to help define the fault plane that ruptured. The Los Angeles basin is crossed from northwest to southeast by the intensively studied Newport-Inglewood fault zone. In 1920, the Inglewood earthquake (M 4.9) occurred in nearly the identical location to this evening's earthquake. The 1920 event was the original reason for identification of this as an active fault zone capable of damaging earthquakes, which then later proved to be the case in the 1933 Long Beach event. After the 1933 event, the name of the fault zone was changed to the Newport-Inglewood fault zone in recognition that it is continuous from Beverly Hills to Newport Beach."