Become part of our global and national community



us-users since 1 Jan 2017


Central and Latin America users


Earthquake country is beautiful and enticing

Almost everything we love about areas like the San Francisco bay area, the California Southland, Salt Lake City against the Wasatch range, Seattle on Puget Sound, and Portland, is brought to us by the faults. The faults have sculpted the ridges and valleys, and down-dropped the bays, and lifted the mountains which draw us to these western U.S. cities. So, we enjoy the fruits of the faults every day. That means we must learn to live with their occasional spoils: large but infrequent earthquakes. Becoming quake resilient is a small price to pay for living in such a great part of the world, and it is achievable at modest cost.



A personal solution to a global problem

Half of the world’s population lives near active faults, but most of us are unaware of this. You can learn if you are at risk and protect your home, land, and family.

Temblor enables everyone in the continental United States, and many parts of the world, to learn their seismic, landslide, tsunami, and flood hazard. We help you determine the best way to reduce the risk to your home with proactive solutions.


Earthquake maps, soil liquefaction, landslide zones, cost of earthquake damage

In our iPhone and Android and web app, Temblor estimates the likelihood of seismic shaking and home damage. We show how the damage and its costs can be decreased by buying or renting a seismically safe home or retrofitting an older home.



Please share Temblor with your friends and family to help them, and everyone, live well in earthquake country.

Temblor is free and ad-free, and is a 2017 recipient of a highly competitive Small Business Innovation Research (‘SBIR’) grant from the U.S. National Science Foundation.




Recent articles and news interviews

Earth Magazine Feature: A L’Aquila trigger, seismic gaps and poor construction: What we’ve learned from the August earthquake in Italy – Link

Earth Magazine Feature: Temblor: An app that brings home your seismic hazard – Link

• The Pulse NPR radio show and podcast – Link

• post about Temblor – Link



Temblor is certified by the Kaiser Permanente Mobility Center of Excellence, and is available in the KP App Store for use on secure employee devices



Recent invited presentations

• World Bank (Washington, D.C.)

• California Seismic Safety Commission (Sacramento)

• Structural Engineers Association of Southern California (Los Angeles)

• Rae Dorough Speaker Series (Livermore)

• Willis Research Network seminar (London)

• CAT Management & Modeling Conference Europe (London)

• San Mateo Resiliency Network (Foster City)


Upcoming presentations

Dec 11-15: Fall American Geophysical Union Meeting (New Orleans)

March 20: National Autonomous University of Mexico (UNAM)


App enhancements

• Active faults in 70 countries

• Alquist-Priolo Fault Zones in California

• Realtime earthquakes merged from the USGS and EMS catalogs

• Tsunami inundation maps on the U.S. West Coast, Hawaii, and the Caribbean