Faults and Recent Earthquakes Dashboard

Faults and Recent Earthquakes Opens in new window

Being prepared, alerted, and engaged with county efforts are key to staying safe in an earthquake. This dashboard shows the fault lines and reported earthquakes across California with Placer County boundaries highlighted.

***More Information below from the Department of Interior United States Geological Survey + California Office of Emergency Services +***



An earthquake is a sudden, rapid shaking of the ground caused by the shifting of rocks deep underneath the earth’s surface. Earthquakes can cause fires, tsunamis, landslides or avalanches. While they can happen anywhere without warning, California is one of the states at higher risk for earthquakes.



Earthquake Warning California

Earthquake Warning California is the country’s first publicly available, statewide warning system that could give California residents crucial seconds to takecover before you feel shaking. Managed by the Governor’s Office of Emergency Services, 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. Learn more  


Preparation Before, During and After

The best time to prepare for any disaster is before it happens. has all the tips and steps you need to ensure you stay prepared before, during and after an earthquake. Learn more

Prepare Before

  1. Practice Drop, Cover, and Hold On with family and coworkers.
  2. Make an Emergency Plan: Create a family emergency communications plan that has an out-of-state contact. Plan where to meet if you get separated. Make a supply kit.
  3. Protect Your Home: Secure heavy items in your home and consider obtaining an earthquake insurance policy.

Stay Safe During

  • If you are in a car, pull over and stop. Set your parking brake.
  • If you are in bed, turn face down and cover your head and neck with a pillow.
  • If you are outdoors, stay outdoors away from buildings.
  • If you are inside, stay and do not run outside and avoid doorways.

Stay Safe After

  • Expect aftershocks to follow the main shock of an earthquake. Be ready to Drop, Cover, and Hold On if you feel an aftershock.
  • If you are in a damaged building, go outside and quickly move away from the building. Do not enter damaged buildings.
  • If you are trapped, send a text or bang on a pipe or wall. 


Different Types of Alerts

You can receive warning of an earthquake before you feel shaking. Earthquake Warning California can give you seconds of notice using the following tools:

  • MyShake App

  • Android Earthquake Alerts

  • Wireless Emergency Alerts (WEAs)

Learn more

USGS Did You Feel It? Program

Did You Feel It? is a U.S. Geological Survey program that collects information from people who felt an earthquake and creates maps that show what people experienced and the extent of damage. Learn more

Latest Earthquakes Map
Follow the latest earthquakes map and list for our region. Learn more 


The Great Shakeout

International ShakeOut Day is always the third Thursday of October. Learn the expert guidance for how to immediately protect yourself after the first jolt… or get an alert that shaking is on its way! It's actually a good idea to practice earthquake safety in different situations each year, and ShakeOut Organizers are here to support you. Learn more