Geologic Hazards Science Center

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Filter Total Items: 40
Date published: March 5, 2019

New U.S. Geological Survey Report Assesses Risk of Once-Per-Century Geomagnetic Superstorm to the Northeastern United States

A new report and map published by the U.S. Geological Survey provides critical insight to electric power grid operators across the northeastern United States in the event of a once-per-century magnetic superstorm.  

Date published: November 30, 2018

2018 Anchorage Earthquake

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.

Date published: September 18, 2018

Why Do Giant Rocks Suddenly Fall From Cliffs?

"In Yosemite Valley, rockfalls can happen every four to five days, where boulders that can be larger than your average car or apartment building thunder down steep mountainsides." - Seeker

Date published: August 8, 2018

Mapping Extreme-Value Geoelectric Fields

To help mitigate magnetic storm interference on electric power grid operations, extreme-value geoelectric fields have been mapped across the mid-Atlantic United States. (EOS article) Read Article.

Date published: August 6, 2018

Better Performance and New Features on Earthquake Website

Better performance and new features: landslides and liquefaction estimates, population map layer, Spanish Did You Feel It?, and aftershock forecasts.

Date published: July 25, 2018

Researchers Develop Model for Predicting Landslides Caused by Earthquakes

A model developed by researchers at Indiana University and the USGS can help experts address such risks by estimating the likelihood of landslides that will be caused by earthquakes anywhere in the world within minutes. Read story.

Date published: July 3, 2018

Rattlesnake Hills Landslide Information

What is known and what is being done, from the Washington Department of Natural Resources.

Date published: June 1, 2018

Oklahoma Study Reveals Possible, Previously Unknown Sources of Earthquakes

Magnetic measurements made during low-altitude airplane flights conducted for the U.S. Geological Survey and the Oklahoma Geological Survey reveal possible deep faults that may contribute to increased seismic activity in response to wastewater injection in certain portions of Oklahoma.

Date published: September 18, 2017

USGS Teams Up with Jackson Hole Mountain Resort to Research Teton Fault

Just after Labor Day, U.S. Geological Survey field crews began digging a trench within the Jackson Hole Mountain Resort ski area, on the lower reaches of Buffalo Bowl. 

Date published: August 8, 2017

MEDIA ADVISORY: Media Webinar – Gathering and Sharing Information about Recent Earthquakes

After the next significant earthquake, many sources will be disseminating information from a variety of accounts, tools and services.

Date published: May 15, 2017

The USGS ShakeCast System

Early on the morning of August 24, 2014, Loren Turner was awoken by clattering window blinds, a moving bed, and the sound of water splashing out of his backyard pool. He experienced what is now named the “South Napa Earthquake.”