On November 13, 2008, the City of Claremont participated in the State-wide earthquake training drill known as the Great Southern California ShakeOut.
The Great Southern California ShakeOut is based on a potential magnitude 7.8 earthquake on the southern San Andreas Fault-- approximately 5,000 times larger than the magnitude 5.4 earthquake that shook southern California on July 29. It's not a matter of if an earthquake of this size will happen--but when. And it is possible that it will happen in our lifetime.
Dr. Lucy Jones of the U.S. Geological Survey has led a group of over 300 scientists, engineers, and others to study the likely consequences of this potential earthquake in great detail. The result is the Southern California Shakeout scenario which is also the basis of the statewide emergency response exercise, Golden Guardian 2008.
7.8 Magnitude Earthquake
In an earthquake of this size, the shaking will last for nearly two minutes. The strongest shaking will occur near the fault (in the projected earthquake, the Coachella Valley, Inland Empire and Antelope Valley). Pockets of strong shaking will form away from the fault where sediments trap the waves (in the projected earthquake, it would occur in the San Gabriel Valley and in East Los Angeles).
An earthquake of this size will cause unprecedented damage to Southern California--greatly dwarfing the massive damage that occurred in Northridge's 6.7-magnitude earthquake in 1994. In summary, the ShakeOut Scenario estimates this earthquake will cause some 2,000 deaths, 50,000 injuries, $200 billion in damage and other losses, and severe, long-lasting disruption. The report has regional implications and is a dramatic call to action for preparedness.
Geologists selected the details of this hypothetical earthquake by considering the amount of stored strain on that part of the fault with the greatest risk of imminent rupture. From this, seismologists and computer scientists modeled the ground shaking that would occur in this earthquake. Engineers and other professionals used the shaking to produce a realistic picture of this earthquake's damage to buildings, roads, pipelines, and other infrastructure. From these damages, social scientists projected casualties, emergency response, and the impact of the scenario earthquake on southern California's economy and society. The earthquake, its damages, and resulting losses are one realistic outcome, deliberately not a worst-case scenario, rather one worth preparing for and mitigating against.
Decades of improving the life-safety requirements in building codes have greatly reduced the risk of death in earthquakes, yet southern California's economic and social systems are still vulnerable to large-scale disruptions. Because of this, the ShakeOut Scenario earthquake would dramatically alter the nature of the southern California community. Fortunately, steps can be taken now that can change that outcome and repay any costs many times over. The ShakeOut Scenario is the first public product of the USGS Multi-Hazards Demonstration Project, created to show how hazards science can increase a community's resiliency to natural disasters through improved planning, mitigation, and response.
Claremont Participation
The City of Claremont worked in cooperation with the Claremont Unified School District, the Claremont Colleges, Claremont Chapter of the Red Cross, Los Angeles County Fire Department and local utilities. The City's Emergency Operations Center was activated and participants trained throughout the day with the simulation information provided by the United States Geological Survey. Training included practicing communications between different emergency response departments within the City and the County of Los Angeles. The Claremont Police Department set up a mobile Incident Command Center in the field and City Departments such as Human Services and Community Services established Department Operating Centers within their buildings. In addition, the City's volunteer forces, the Police Departments Community Patrol, Community Emergency Response Team and Claremont Amateur Radio Disaster Service participated in the training with regular City employees.
This training will help prepare City employees as well as our allied agencies to be better prepared to respond effectively when a disaster occurs in our region.
During the weeks leading up to the Great Southern California ShakeOut, look for further information on this website and from Neighborhood E-Watch emails on how you can prepare yourself, your family and your community in the event that a disaster occurs.
Contact the Inland Valley Humane Society by phone, (909) 623-9777 or visit their web site at www.ivhsspca.org and go to the Pet Tips section.