Earthquake Hazards Program

Recent geological studies of a key section of the Aleutian Island chain of Alaska suggest Aleutian tsunamis may occur more frequently than previously understood.

A magnitude 7.0 earthquake struck north of Anchorage, Alaska, on November 30, 2018, at 8:29 a.m. local time (17:29:28 UTC).  For the most up-to-date information, please visit the USGS event page, and for estimates of casualties and damage, visit the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) website.

By Thomas M. Brocher, Jack Boatwright, James J. Lienkaemper, Carol S. Prentice, David P. Schwartz, and Howard Bundock

Drawn from: USGS Fact Sheet 2018-3052

Do you know what to do the moment the ground starts shaking? Drop, Cover, and Hold On!

What are the next goals for the NEIC?

A magnitude 7.5 earthquake struck north of Palu, Indonesia on September 28, 2018 at 6:03 pm local time (10:03 am UTC).

USGS explores opportunities to advance its capabilities in risk assessment, mitigation, and communication in new strategic plan.

Learn About USGS Hazards Science and More About National Preparedness Month: The very nature of natural hazards means that they have the potential to impact a majority of Americans every year.  USGS science provides part of the foundation for emergency preparedness whenever and wherever disaster strikes.

The USGS has up-to-date details on the September 5, 2018 event.

Complex geologic sites, like those between the fault segments along the Wasatch fault zone in Utah, make the dating and ordering past earthquakes a difficult task. Two new methods were used to make this task easier and to get better results.

A new picture of the geometry of subducting slabs around the world, the locations of the world’s largest earthquakes.