Earthquake Resources

​An earthquake can be caused by the sudden shifting of rock plates beneath the earth’s surface or from the pressure of rising magma in volcanic areas. They usually occur along fault lines (where the rock plates that form the earth’s crust meet), or in volcanic areas. The shaking may be very slight, or it may be quite violent. Loud rumblings often accompany earthquakes, along with significant structural damage, power outages, explosions, or fires.
Intraplate quakes occur far from plate edges and happen when stress builds up and the Earth's crust is stretched or squeezed together until it rips. There are several different types of faults. These faults can stretch in length from a few inches to many hundreds of miles long. They can be horizontal, vertical, or at an angle.
Earthquake waves are measured on sensitive instruments called seismographs. The Richter scale assigns quakes a number based on the power of its seismic waves. Thousands of quakes occur every day around the globe, most of them too weak to be felt. Every year about 10,000 people, on average, die as a result of earthquakes.

 Earthquake Preparedness

Are You Prepared?
Take the Quake Quiz, and what to do if you are caught in an earthquake. Find out what you would need to make sure you are ready for a disaster of earthquake proportions.
American Red Cross
Includes information on how to prepare for an earthquake, how to respond during an earthquake, and how to recover after an earthquake. An earthquake checklist is also included.
Earthquake app
Earthquake Country Alliance
Although most of this information is directed toward California, emergency preparedness information is good for any region. The site is being expanded to include other states.
Earthquake Facts and Preparedness: San Diego County
Since 1984, earthquake activity in San Diego County has doubled over that of the preceding 50 years. This site features earthquake preparedness brochures and reports.
Earthquake Hazards Program
Handbooks for earthquake-prone regions, tips from Federal Emergency Management Agency, earthquake drills and more are available here.
Earthquake Preparedness - Anchorage, Alaska
Alaska experiences over 20,000 earthquakes per year (Source: Alaska Earthquake Information Center). Find out what you can do to stay safe during and after the next earthquake.
Earthquake Preparedness Guide
The Disaster Center has assembled basic earthquake information and resources to inform and prepare in the event of an earthquake, including tips, how to protect your property, and media and communication ideas.
Earthquake Preparedness - Idaho
Idaho is ranked fifth in the nation for earthquake risk, after California, Alaska, Nevada, and Utah. A roundup of resources is available. 
Earthquake Preparedness - Be Ready Utah
Utah has experienced damaging earthquakes in the past and geologic evidence indicates that earthquakes larger than any experienced locally in historical time are likely in the future. A Utah Earthquake Preparedness Guide is available.
Earthquake Preparedness - Yuma County, Ariz.
Yuma County borders on two very seismically active areas: Southern California and Baja, Calif. Major quakes in those areas can also affect the Yuma Area, most recently a 7.2 quake in Baja, Calif., on April 4, 2010. An emergency plan and downloadable checklists are provided.
Earthquake Preparedness Program - Indiana
Tips for before, during and after an earthquake are provided, as well as fact sheets, tips and more.
Earthquake Safety Guide
Areavibes offers some useful tips to help keep you and safe.
Earthquake Tips from Los Angeles Fire Department 
This handy booklet includes tips for during and after an earthquake from the Los Angeles Fire Department, as well as how to prepare for an earthquake.
Earthquakes: Emergency Preparedness
Tips and resources are available for before, during and after an earthquake, including resources for people with special needs, and information for clinicians.

Earthquakes in Washington (State)
The Washington Military Department Emergency Management Division provides information and resources for earthquake preparedness, including historical earthquake information and brochures on hazards and risks.

The Great California Shakeout Drill
The Great California Shakeout Drill is an annual drill that partners statewide agencies with companies and individuals interested in developing their own earthquake preparedness strategy and enable them to learn how to prepare for, survive and recover from an earthquake. Tip sheets are also available for download.
Homep Preparedness - What to do in an Earthquake
An earthquake can strike at any time without warning. Each year, between 70 and 75 earthquakes cause damage around the world. In the United States, a future earthquake could cost up to $200 billion. There are 41 territories and states in the U.S. that fall under moderate to high risk of earthquakes. These territories and states are distributed throughout all of the country.
Illinois Earthquake Information
The state of Illinois, which is affected by the New Madrid seismic zone and the Wabash Valley seismic zone, has rounded up important earthquake resources, including FAQs, an emergency supply checklist and local business, government and school planning guides.
Missouri Earthquake Preparedness
Between Dec. 16, 1811 to Feb. 7, 1812, Missouri was rocked by at least three of the largest earthquakes ever to hit the continental United States. See recent earthquake activity of a 1.0 or greater magnitude, and learn about the New Madrid seismic zone, which reaches from Missouri into several other nearby states.
Preparedness - Nevada
Over the last 150 years, Nevada has ranked third in the country in the number of large earthquakes. Preparation guides are provided.
State of California Earthquake Preparedness Checklist
This handy checklist includes eliminating protential hazards, establishing a coordinated response plan, and more.