Based in the Bay Area, Temblor is an organization comprising seismologists and other geologists who study and present for the layperson the most current data, research and theory on seismic happenings around the world, and their implications for preparedness. We encourage you to visit and subscribe to their newsletter. They also have an app.

Earthquake: What Does “Magnitude” Mean?

by live (Apr. 20, 2015)

An excellent animation and explanation of “magnitude.”

YouTube video: Free

How Close to a Fault do You Live?

A function of the Bay Area Earthquake Alliance website

Input your address into this interactive Java leaflet to see exactly where your Bay Area home, school or workplace lies with respect to known faults and seismic activity within the last 115 years.

Web app: Free.

Earthquakes & Tsunamis: Causes & Information

by Nola Taylor Redd at live (Apr. 20, 2015)

Explains the basic geophysics of earthquakes and tsunamis. Also a list of the ten largest quakes in history.

Website: Free.

UCERF3 New Earthquake Forecast for California

(March 2015: USGS)

AKA the third “Uniform California Earthquake Rupture Forecast,” the UCERF3 is the latest United States Geological Survey (USGS) forecast for California. The Bay Area forecast includes an alarming 72% probability of a M 6.7 or greater quake in the next 30 years. Even more sobering, it posits a 51% probability of a M 7.0 quake, and 20% for a M 7.5.

Six-page PDF: Free.

Putting Down Roots in Earthquake Country: Your Handbook for the San Francisco Bay Region

(2007: USGS)

The forerunner to the newer Staying Safe booklet described at right/below, this guide, while dated, offers a fuller, more detailed understanding of the science of earthquakes. It is not currently in print, but it is viewable online and available for download and personal printing. (Also available are shorter versions in English, Spanish, Chinese, Vietnamese and Korean.) There is another one specific to SoCal  available in English and Spanish.

32-page PDF/Booklet: Free.

Staying Safe Where the Earth Shakes: Bay Area Edition

(2016: USGS)

Developed by numerous agencies across the region and state, this guide is a good place to start for understanding how to personally prepare for California earthquakes.There is also a statewide edition.

12-page booklet: Free.

Peace of Mind in Earthquake Country: How to Save Your Home, Business, and Life, 3rd ed., Updated and Expanded

by Peter I. Yanev & Andrew C.T. Thompson (2008: Chronicle Books)

The definitive earthquake primer for homeowners (and prospective homeowners) living in quake zones. Clear steps for assessing and mitigating earthquake risks.

Book: $19.95 new, but inexpensive used copies abound.

Red Cross mobile apps

Created by the American Red Cross

The Red Cross has developed several useful apps for disaster preparedness and response. See especially the Earthquake app, the First Aid app and the Pet First Aid app. Several are also available in Spanish.

Mobile apps. Free.

MyShake mobile app: Developing an early warning network for everyone

Developed by the Berkeley Seismology Lab

MyShake is a citizen science project that brings users together to build a global earthquake early warning network, so that communities can help one another reduce the impact of earthquakes. This app can keep users informed about ongoing seismic activity as it gathers data from each participant’s phone sensors. Whether one receives advance notice of a nearby earthquake will depend on one’s location relative to the epicenter of the quake. Yet by participating in the network, data from one’s phone (and many others) will still enable others who are further from the epicenter precious seconds to prepare for shaking, and vice versa.

Mobile app. Free.