Earthquakes are unpredictable events which can lead to significant disruptions in daily life.
While large scale earthquakes (M4.5+) are historically not prevalent in the San Joaquin County area, there can be a chance of damage resulting from earthquakes. Many bay area earthquakes have been felt along the western portions of San Joaquin County.
However, there is a chance that citizens may find themselves traveling outside of San Joaquin County were the risk may be greater. In addition, San Joaquin County may be affected secondary to an earthquake, as a staging location for supplies or additional shelters for those impacted by a large scale earthquake in the bay area.
For these reasons, OES is sharing the following preparedness information to help you to identify available resources and current information in the event of an earthquake with consequences in San Joaquin County.
Earthquake Warning California is the country’s first publicly available, statewide warning system that could give California residents crucial seconds to take cover before you feel shaking. Managed by the Governor’s Office of Emergency Services (Cal OES), Earthquake Warning California uses ground motion sensors from across the state to detect earthquakes before humans can feel them and can notify Californians to “Drop, Cover and Hold On” in advance of an earthquake.
MyShake App: Free smartphone app that provides iPhone and Android users with audio and visual warnings [magnitude 4.5 or higher and Modified Mercalli Intensity III (weak) shaking].
During the next big earthquake, and immediately after, is when your level of preparedness will make a difference in how you and others survive and can respond to emergencies:
After the immediate threat of the earthquake has passed, your level of preparedness will determine your quality of life in the weeks and months that follow:
Here is a model with forecasts of earthquakes and their severities throughout California.
A Map of recent earthquakes and their epicenters can be found at the USGS: Latest Earthquakes Map
Within a few minutes after an earthquake, you can check the USGS Site to verify the earthquake, and see the magnitude.
Being prepared can mitigate the negative consequences created by earthquakes. The Southern California Earthquake Center's (SCEC): Seven Steps to Earthquake Safety will provide helpful and useful tips for earthquake preparedness.
For some basic information about Earthquakes and Faults visit the SCEC Earthquakes Basics Page.