Earthquake Hazards Program

A magnitude 7.0 earthquake struck Acapulco in Oaxaca, Mexico on September 7, 2021 at about 9:48 pm Eastern Daylight Time (September 8 at 01:48 UTC). 

A magnitude 7.2 (M 7.2) earthquake struck Haiti on August 14, 2021, at 8:29 am local time (August 14, 2021 12:29 UTC).

Ten years ago, in the early afternoon of August 23, 2011, millions of people throughout the eastern U.S. felt shaking from a magnitude 5.8 earthquake near Mineral, Virginia. No lives were lost, something experts called “lucky” given the extent of shaking, but property damage was estimated to be in the range of $200 to $300 million.

A magnitude 8.2 earthquake struck 50 miles south of the Alaska Peninsula on July 28, 2021 at 10:15 pm local time (July 29, 2021 06:15 UTC). Seismic instruments indicate the earthquake originated at a depth of 20 miles (32.2 kilometers). 

This year's Annual Natural Hazards Research and Applications Workshop, coordinated by the Natural Hazards Center at CU Boulder on July 11 – 14, 2021, is the 46th and will be organized around the theme of The Hazards and Disaster Workforce: Preparing to Meet 21st Century Challenges. Check out these sessions, posters, and research highlights featuring the USGS Risk Community of Practice members...

A magnitude 6.0 (M6.0) earthquake struck Little Antelope Valley, California near the Nevada border on July 8, 2021 at 3:49pm local time (July 8 at 22:49 UTC). 

A new study led by USGS and Costa Rican researchers demonstrates how Earthquake Early Warning using smartphone technology can be both inexpensive and effective for millions of people.  

In this issue: ShakeAlert for the West Coast, 2021 hurricane season, Barry Arm, Alaska landslide monitoring, research during COVID-19, and more.

You are invited to a public lecture about recent surface rupturing earthquakes in the western United States.

A magnitude 6.1 earthquake struck south-central China near Dali on May 21, 2021 at 9:48 pm local time (May 21 at 13:48 UTC) followed by a magnitude 7.3 on May 22 at 2:04 am local time (May 21 at 18:04 UTC). Seismic instruments indicate both earthquakes originated at a depth of 6.2 miles (10 kilometers).

Coastal Change Hazards researchers Dr. Legna Torres-Garcia and Dr. Donya Frank-Gilchrist of the St. Petersburg Coastal and Marine Science Center (SPCMSC) organized a joint meeting with principal investigators currently conducting hazards-related projects in Puerto Rico.