Earthquake Hazards
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The USGS monitors and reports on earthquakes, assesses earthquake impacts and hazards, and conducts targeted research on the causes and effects of earthquakes. We undertake these activities as part of the larger National Earthquake Hazards Reduction Program (NEHRP), a four-agency partnership established by Congress.
Latest Earthquakes
Latest earthquakes map and list (past 24 hours, M2.5+) from the ANSS (Advanced National Seismic System). Check out the new interface! (7/27/20)
Did You Feel It?
Earthquake Notification Service (ENS)
ShakeAlert® Earthquake Early Warning
Listening to the Earth at the South Pole
If you want to listen to the softest whispers of the Earth, the South Pole is where you want to be. Seismic station, QSPA has been allowing us to eavesdrop on the Earth for over six decades, and it may soon gain the equivalent of hearing aids.
Read the StoryAlaska Peninsula Earthquake Sequences of 2020-2021
Explore this interactive geonarrative summary of the earthquake sequence in the Alaska Peninsula during 2020 and 2021.
ExploreNews
First Draft of the SZ4D Implementation Plan
Members of the Subduction Zones in 4-Dimensions (SZ4D) initiative are pleased to present to you the first draft of the SZ4D implementation plan.
ShakeOut 2021: Earthquake Awareness Enables Community Preparedness
Get ready to shake it like it’s real! ShakeOut 2021: Drop (or Lock), Cover, and Hold On!
The Monitor newsletter - Vol. 4 | Issue Fall 2021
In this issue: Kīlauea Volcano eruption, geomagnetism hazards, debris flow reports, benefits of coral reefs.
Publications
Evidence-based guidelines for protective actions and earthquake early warning systems
Earthquake early warning systems (EEW) are becoming increasingly available or in development throughout the world. With public alerting in Mexico, Japan, Taiwan, and parts of the United States, it is important to provide evidence-based recommendations for protective action so people can protect themselves when they receive an alert. Best-practice...
McBride, Sara K.; Smith, Hollie; Morgoch, Meredith; Sumy, Danielle; Jenkins, Mariah; Peek, Lori; Bostrom, Ann; Baldwin, Dare; Reddy, Beth; de Groot, Robert M.; Becker, Julia; Johnston, David; Wood, Michelle
The HayWired Earthquake Scenario—Societal Consequences
The HayWired earthquake scenario, led by the U.S. Geological Survey (USGS), anticipates the impacts of a hypothetical moment magnitude 7.0 earthquake on the Hayward Fault. The fault runs along the east side of California’s San Francisco Bay and is among the most active and dangerous in the United States, passing through a densely urbanized and...
Wein, Anne M.; Jones, Joseph L.; Johnson, Laurie A.; Kroll, Cynthia; Strauss, Jennifer A.; Witkowski, David; Cox, Dale A. Modeling seismic network detection thresholds using production picking algorithms
Estimating the detection threshold of a seismic network (the minimum magnitude earthquake that can be reliably located) is a critical part of network design and can drive network maintenance efforts. The ability of a station to detect an earthquake is often estimated by assuming the spectral amplitude for an earthquake of a given size, assuming an...
Wilson, David C.; Wolin, Emily; Yeck, William L.; Anthony, Robert E.; Ringler, Adam T.