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News and activities from across the Natural Hazards Mission Area.

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Latest Newsletter

Latest Newsletter

In this issue: 2019 Ridgecrest earthquake geo-narrative, potential landslide in Alaska, subduction zone science, post-wildfire debris flow assessments, new @USGS_Quakes Twitter account, mapping faults in Puerto Rico, and more.

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Date published: July 22, 2021

Down to Earth: Complexities of Geology Affect Nuclear Electromagnetic Pulse Hazard 

Geoelectric hazards generated by a nuclear explosion at the outer edge of Earth’s atmosphere can be strongly affected by the electrical conductivity of rock structures beneath the Earth's surface, according to a study led by the U.S. Geological Survey.  

Date published: July 21, 2021

Studying earthquakes from lake sediment: Lacustrine paleoseismology in Alaska

USGS researchers in Alaska, including geologist and Mendenhall Fellow Drake Singleton of the Pacific Coastal and Marine Science Center, are using techniques from a discipline known as lake paleoseismology, studying cores of lake sediment to reconstruct past seismic activity. 

Date published: July 14, 2021

2021 North Atlantic Stepping Stones Expedition

At 7 p.m. ET/4 p.m. PT on Wednesday, July 14, you are invited to join a live event introducing the 2021 North Atlantic Stepping Stones: New England and Corner Rise Seamounts expedition.

Date published: July 8, 2021

USGS Participation in the Annual Natural Hazards Research and Applications Workshop

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...

Date published: July 8, 2021

Magnitude 6.0 Earthquake in California

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). 

Date published: July 8, 2021

A Fixed Smartphone Network Offers Inexpensive Earthquake Early Warning Potential

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.  

Date published: June 30, 2021

Seismic Reflections

To find out what’s shaking beneath the seafloor off southern California’s coast, USGS scientists turned on their hydrophones and used sound waves to “see” beneath the seafloor.

Date published: June 30, 2021

Why the Ocean?

To celebrate Ocean Month 2021, we asked staff from across the USGS Coastal and Marine Hazards and Resources Program why they study the ocean, why they love the ocean, and why people should care about the ocean.