Mission Areas

Earthquake Hazards

Programs L2 Landing Page

Earthquakes pose significant risk to 75 million Americans in 39 States. We monitor and report earthquakes, assess earthquake impacts and hazards, and research the causes and effects of earthquakes. Our program is part of the larger, National Earthquake Hazards Reduction Program (NEHRP), a four-agency partnership established by Congress.

Latest Earthquakes

Latest Earthquakes

Latest earthquakes map and list (past 24 hours, M2.5+). Tap/click on "gear icon" for options and settings.

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Did You Feel It?

Did You Feel It?

Feel an earthquake? Report it here.

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Explore the Earthquake Hazards Program

Latest and historical earthquakes, hazards information, educational resources, maps, seismographic stations and real-time recording, current research in plain language, data, software and derived products.

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News

person standing next to large boulder
March 20, 2017

Geologists have discovered evidence that unusual seas detached living corals from a Caribbean reef and scattered them far inland, as boulders, during the last centuries before Columbus arrived. The new findings will reinforce precautions against coastal hazards, Caribbean tsunami specialists said.

USGS logo
February 17, 2017

Small variations in the density of the earth’s crust—undetectable to humans without sensitive instruments—influence where earthquakes may occur in the central United States. These new findings from the U.S. Geological Survey, published today in Nature Communications, may allow scientists to map where future seismicity in the center of the country is most likely.

K2 Seismic Station
February 2, 2017

The U. S. Geological Survey is seeking volunteers to host temporary seismic stations in the Walnut Creek/Pleasant Hill/Concord California area. Volunteers will be assisting with a new ground motion study that will begin in March 2017.

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USGS science for a changing world logo
March 2, 2016

The Earthquake Hazards Program monitors and reports earthquakes, assesses earthquake impacts and hazards, and researches the causes and effects of earthquake.

USGS science for a changing world logo
March 2, 2016

The Earthquake Hazards Program monitors and reports earthquakes, assesses earthquake impacts and hazards, and researches the causes and effects of earthquake.

Filter Total Items: 12
USGS logo
April 27, 2016

Spreadsheet Applications

A simple text format suitable for loading data into spreadsheet applications. This is a good option for manual scientific analysis.

USGS logo
April 27, 2016

QuakeML

A flexible, extensible and modular XML representation of seismological data which is intended to cover a broad range of fields of application in modern seismology.

USGS logo
April 27, 2016

Google Earth KML

This feed format is suitable for loading into applications that understand Keyhole Markup Language (KML) such as Google Earth™.

USGS logo
April 27, 2016

Programmatic Access

A well-structured format readily parsed by most programming languages. This is a good option for software developers wishing to use earthquake data.

USGS logo
April 27, 2016

Atom Syndication

A basic syndication format supported by a variety of feed readers. This is a good option for casually subscribing to earthquake information.

Screenshot of earthquake notification webpage
April 27, 2016

Earthquake Notification Service

The Earthquake Notification Service (ENS) is a free service that sends you automated notifications to your email or cell phone when earthquakes happen.

Screenshot of the recent Earthquakes in the Americas
April 27, 2016

Earthquakes (Recent World-wide)

View the most recent events or search for past earthquakes.

USGS Tweet Earthquake Dispatch or TED icon
April 27, 2016

Tweet Earthquake Dispatch (TED)

Tweet Earthquake Dispatch (TED) offers two Twitter accounts. On average, each account will produce about one tweet per day.

Screenshot of world map with pin dropped on coastal Equador
April 27, 2016

Did You Feel It?

Feel an earthquake? Report it here. View reported earthquakes in your area.

USGS science for a changing world logo
March 7, 2016

Real-time Earthquake Information

Get real-time earthquake notifications sent to you using a number of popular mediums: Feeds, Email, Twitter, etc…

USGS science for a changing world logo
March 4, 2016

Latest Earthquakes Map and List

View recent events or search for past earthquakes. Optimized for mobile and desktop.

USGS science for a changing world logo
March 4, 2016

Research Data and Products

USGS earthquake data including real-time and historic earthquake catalogs, GIS data, hazards, and more.

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USGS science for a changing world logo
March 7, 2016

View recent events or search for past earthquakes. Optimized for mobile and desktop.

USGS science for a changing world logo
March 7, 2016

View recent events or search for past earthquakes. Optimized for mobile and desktop.

Filter Total Items: 264
Effective stress, friction and deep crustal faulting
Year Published: 2016

Effective stress, friction and deep crustal faulting

Studies of crustal faulting and rock friction invariably assume the effective normal stress that determines fault shear resistance during frictional sliding is the applied normal stress minus the pore pressure. Here we propose an expression for the effective stress coefficient αf at temperatures and stresses near the brittle-ductile transition (...

Beeler, N.M.; Hirth, Greg; Thomas, Amanda M.; Burgmann, Roland
How to build and teach with QuakeCaster: an earthquake demonstration and exploration tool
Year Published: 2015

How to build and teach with QuakeCaster: an earthquake demonstration and exploration tool

QuakeCaster is an interactive, hands-on teaching model that simulates earthquakes and their interactions along a plate-boundary fault. QuakeCaster contains the minimum number of physical processes needed to demonstrate most observable earthquake features. A winch to steadily reel in a line simulates the steady plate tectonic motions far from the...

Linton, Kelsey; Stein, Ross S.
How to build and teach with QuakeCaster, an earthquake demonstration and exploration tool; 2011; OFR; 2011-1158; Linton, Kelsey; Stein, Ross S.
Rapid earthquake characterization using MEMS accelerometers and volunteer hosts following the M 7.2 Darfield, New Zealand, Earthquake
Year Published: 2014

Rapid earthquake characterization using MEMS accelerometers and volunteer hosts following the M 7.2 Darfield, New Zealand, Earthquake

Lawrence, J. F.; Cochran, E.S.; Chung, A.; Kaiser, A.; Christensen, C. M.; Allen, R.; Baker, J.W.; Fry, B.; Heaton, T.; Kilb, Debi; Kohler, M.D.; Taufer, M.
Rapid earthquake characterization using MEMS accelerometers and volunteer hosts following the M 7.2 Darfield, New Zealand, Earthquake; 2014; Article; Journal; Bulletin of the Seismological Society of America; Lawrence, J. F.; Cochran, E. S.; Chung, A.; Kaiser, A.; Christensen, C. M.; Allen, R.; Baker, J. W.; Fry, B.; Heaton, T.; Kilb, D.; Kohler, M. D.; Taufer, M.
Seismological analyses of the 2010 March 11, Pichilemu, Chile Mw 7.0 and Mw 6.9 coastal intraplate earthquakes
Year Published: 2014

Seismological analyses of the 2010 March 11, Pichilemu, Chile Mw 7.0 and Mw 6.9 coastal intraplate earthquakes

Ruiz, Javier A.; Hayes, Gavin P.; Carrizo, Daniel; Kanamori, Hiroo; Socquet, Anne; Comte, Diana
Seismological analyses of the 2010 March 11, Pichilemu, Chile Mw 7.0 and Mw 6.9 coastal intraplate earthquakes; 2014; Article; Journal; Geophysical Journal International; Ruiz, Javier A.; Hayes, Gavin P.; Carrizo, Daniel; Kanamori, Hiroo; Socquet, Anne; Comte, Diana
Logs and data from trenches across the Berryessa Fault at the Jerd Creek site, northeastern Napa County, California, 2011-2012
Year Published: 2014

Logs and data from trenches across the Berryessa Fault at the Jerd Creek site, northeastern Napa County, California, 2011-2012

Lienkaemper, James J.; Rosa, Carla M.; Cappelle, Ian J.; Wolf, Evan M.; Knepprath, Nichole E.; Piety, Lucille A.; Derouin, Sarah A.; Reidy, Liam M.; Redwine, Joanna L.; Sickler, Robert R.
Logs and data from trenches across the Berryessa Fault at the Jerd Creek site, northeastern Napa County, California, 2011-2012; 2014; OFR; 2014-1033; Lienkaemper, James J.; Rosa, Carla M.; Cappelle, Ian J.; Wolf, Evan M.; Knepprath, Nichole E.; Piety, Lucille A.; Derouin, Sarah A.; Reidy, Liam M.; Redwine, Joanna L.; Sickler, Robert R.
Global surface displacement data for assessing variability of displacement at a point on a fault
Year Published: 2014

Global surface displacement data for assessing variability of displacement at a point on a fault

Hecker, Suzanne; Sickler, Robert; Feigelson, Leah; Abrahamson, Norman; Hassett, Will; Rosa, Carla; Sanquini, Ann
Global surface displacement data for assessing variability of displacement at a point on a fault; 2014; OFR; 2013-1305; Hecker, Suzanne; Sickler, Robert; Feigelson, Leah; Abrahamson, Norman; Hassett, Will; Rosa, Carla; Sanquini, Ann
Response of Global Navigation Satellite System receivers to known shaking between 0.2 and 20 Hertz
Year Published: 2014

Response of Global Navigation Satellite System receivers to known shaking between 0.2 and 20 Hertz

Over the past decade, several technological advances have allowed Global Navigation Satellite Systems (GNSS) receivers to have the capability to record displacements at high frequencies, with sampling rates approaching 100 samples per second (sps). In addition, communication and computer hardware and software have allowed various institutions,...

Langbein, John; Evans, John R.; Blume, Fredrick; Johanson, Ingrid
Response of Global Navigation Satellite System receivers to known shaking between 0.2 and 20 Hertz; 2014; OFR; 2013-1308; Langbein, John; Evans, John R.; Blume, Fredrick; Johanson, Ingrid
Triggered aseismic slip adjacent to the 6 February 2013 Mw 8.0 Santa Cruz Islands megathrust earthquake
Year Published: 2014

Triggered aseismic slip adjacent to the 6 February 2013 Mw 8.0 Santa Cruz Islands megathrust earthquake

Hayes, Gavin P.; Furlong, Kevin P.; Benz, Harley M.; Herman, Matthew W.
Triggered aseismic slip adjacent to the 6 February 2013 Mw 8.0 Santa Cruz Islands megathrust earthquake; 2014; Article; Journal; Earth and Planetary Science Letters; Hayes, Gavin P.; Furlong, Kevin P.; Benz, Harley M.; Herman, Matthew W.
Quantifying potential earthquake and tsunami hazard in the Lesser Antilles subduction zone of the Caribbean region
Year Published: 2013

Quantifying potential earthquake and tsunami hazard in the Lesser Antilles subduction zone of the Caribbean region

Hayes, Gavin P.; McNamara, Daniel E.; Seidman, Lily; Roger, Jean
Quantifying potential earthquake and tsunami hazard in the Lesser Antilles subduction zone of the Caribbean region; 2013; Article; Journal; Geophysical Journal International; Hayes, Gavin P.; McNamara, Daniel E.; Seidman, Lily; Roger, Jean
Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey
Year Published: 2013

Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey

Rose, Elizabeth J.; Fuis, Gary S.; Stock, Joann M.; Hole, John A.; Kell, Annie M.; Kent, Graham; Driscoll, Neal W.; Goldman, Mark; Reusch, Angela M.; Han, Liang; Sickler, Robert R.; Catchings, Rufus D.; Rymer, Michael J.; Criley, Coyn J.; Scheirer, Daniel S.; Skinner, Steven M.; Slayday-Criley, Coye J.; Murphy, Janice M.; Jensen, Edward G.; McClearn, Robert; Ferguson, Alex J.; Butcher, Lesley A.; Gardner, Max A.; Emmons, Iain; Loughran, Caleb L.; Svitek, Joseph R.; Bastien, Patrick C.; Cotton, Joseph A.; Croker, David S.; Harding, Alistair J.; Babcock, Jeffrey M.; Harder, Steven H.; Rosa, Carla M.
Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey; 2013; OFR; 2013-1172; Rose, Elizabeth J.; Fuis, Gary S.; Stock, Joann M.; Hole, John A.; Kell, Annie M.; Kent, Graham; Driscoll, Neal W.; Goldman, Mark; Reusch, Angela M.; Han, Liang; Sickler, Robert R.; Catchings, Rufus D.; Rymer, Michael J.; Criley, Coyn J.; Scheirer, Daniel S.; Skinner, Steven M.; Slayday-Criley, Coye J.; Murphy, Janice M.; Jensen, Edward G.; McClearn, Robert; Ferguson, Alex J.; Butcher, Lesley A.; Gardner, Max A.; Emmons, Iain; Loughran, Caleb L.; Svitek, Joseph R.; Bastien, Patrick C.; Cotton, Joseph A.; Croker, David S.; Harding, Alistair J.; Babcock, Jeffrey M.; Harder, Steven H.; Rosa, Carla M.
Natural Hazards Science at the U.S. Geological Survey
Year Published: 2013

Natural Hazards Science at the U.S. Geological Survey

Perry, Suzanne C.; Jones, Lucile M.; Holmes, Jr., Robert R.
Natural Hazards Science at the U.S. Geological Survey; 2013; FS; 2013-3082; Perry, Suzanne C.; Jones, Lucile M.; Holmes, Robert R., Jr.
Surface electric fields for North America during historical geomagnetic storms
Year Published: 2013

Surface electric fields for North America during historical geomagnetic storms

Wei, Lisa H.; Homeier, Nichole; Gannon, Jennifer L.
Surface electric fields for North America during historical geomagnetic storms; 2013; Article; Journal; Space Weather; Wei, Lisa H.; Homeier, Nichole; Gannon, Jennifer L.
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June 15, 2016

USGS Research Geophysicist Kate Allstadt conducts experiments at the U.S. Geological Survey debris-flow flume, near Eugene, Oregon. Dr. Allstadt and her group are working toward an understanding of how debris flows generate seismic signals. The quantitative information will be used in the development of improved technologies for detecting debris flows to mitigate their destructive effects.

South Crillon Glacier
June 5, 2016

Nearly 60 years after a magnitude 7.7 earthquake struck Lituya Bay, Alaska — leading to a tsunami that devastated the area — six U.S. Geological Survey geologists revisited the isolated region of Alaska, to pick up where their scientific predecessors left off. In this photo, members of the USGS research team pause to take in the view of South Crillon Glacier from a study site along the Fairweather Fault in southeast Alaska. 

Glacier Bay National Park
June 5, 2016

Trench site along the southern Fairweather Fault, in Glacier Bay National Park, Alaska. The alluvial fan at left consists of lake, stream channel and debris flow deposits impounded by the Fairweather Fault scarp, at right.

Fairweather Fault
June 5, 2016

USGS research geologist Kate Scharer with her finger on the Fairweather Fault in southeast Alaska. The magnitude 7.8 Lituya Bay earthquake caused shaking that toppled trees along the fault, which left a break in the forest shown here.

South Crillon Glacier
June 5, 2016

Periodic calving of ice from the snout of South Crillon Glacier.

Alaska field team
June 5, 2016

The field team included USGS geologists Rob Witter, Adrian Bender, Chris DuRoss, Peter Haeussler, Richard Lease and Kate Scharer

May 20, 2016

This video presents a visualization of shaking that was recorded in the Frontier Building in Anchorage, Alaska, during the Mw7.1 earthquake, January 24, 2016, Iniskin, Alaska. It exhibits how a tall building behaves and performs during strong earthquake shaking. Note that relative to the height of the building, the motions are magnified by a factor of 300 to show deformation characteristics. This video also shows how structural monitoring projects by the USGS National Strong Motion Project can benefit the engineering and research community by capturing real-life shaking in buildings such as the Frontier Building in seismic areas.

Standing Masonry Buildings in Kathmandu, Nepal
April 2016 (approx.)

Standing masonry buildings in Kathmandu suggest that shaking was not amplified in the valley sediments surrounding Kathmandu

Damaged Monument Kathmandu, Nepal
April 2016 (approx.)

Major damage was more likely to monuments in Kathmandu, Nepal than more modern structures

person standing next to large boulder
February 14, 2015

A brain coral boulder eight feet in diameter stands 750 feet inland in the British Virgin Islands. Geologists say that the coral was brought ashore, probably alive, by an unusual tsunami or storm between the years 1200 and 1480.

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person standing next to large boulder
March 20, 2017

Geologists have discovered evidence that unusual seas detached living corals from a Caribbean reef and scattered them far inland, as boulders, during the last centuries before Columbus arrived. The new findings will reinforce precautions against coastal hazards, Caribbean tsunami specialists said.

USGS logo
February 17, 2017

Small variations in the density of the earth’s crust—undetectable to humans without sensitive instruments—influence where earthquakes may occur in the central United States. These new findings from the U.S. Geological Survey, published today in Nature Communications, may allow scientists to map where future seismicity in the center of the country is most likely.

K2 Seismic Station
February 2, 2017

The U. S. Geological Survey is seeking volunteers to host temporary seismic stations in the Walnut Creek/Pleasant Hill/Concord California area. Volunteers will be assisting with a new ground motion study that will begin in March 2017.

A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06.
December 13, 2016

What is causing most of the induced earthquakes (aka man-made earthquakes) we’ve seen recently in the central United States?

USGS logo
November 1, 2016

A new study from the USGS suggests that some early 20th century earthquakes in southern California might have been induced (man-made) by past practices that were used by the oil and gas industry.

Magnitude 6.6 Earthquake in Italy
October 30, 2016

A magnitude 6.6 earthquake struck Italy on October 30, 2016 at 06:40:19 UTC (7:40 am local time). This is reportedly the largest earthquake in Italy since the magnitude 6.9 Irpinia earthquake struck southern Italy in 1980. 

Magnitude 6.1 Earthquake in Italy
October 26, 2016

A magnitude 6.1 earthquake struck Italy on October 26, 2016 at 19:18:08 UTC (9:18 pm local). A magnitude 5.5 earthquake struck earlier at 17:10:37 UTC. Numerous smaller aftershocks have also occurred.

Oklahoma
October 24, 2016

Distant wastewater disposal wells likely induced the third largest earthquake in recent Oklahoma record, the Feb. 13, 2016, magnitude 5.1 event roughly 32 kilometers northwest of Fairview, Oklahoma. These findings from the U.S. Geological Survey are available in the online edition of Geophysical Research Letters.

Image: Students Conduct Earthquake Preparedness Drill
October 17, 2016

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

A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06.
October 11, 2016

True or false? The same size earthquake will cause damage over a larger area in the West than the East.

Image shows a diagram of a subduction zone
September 12, 2016

It’s not flirting for submarines, but this week’s EarthWord does feature the ocean...

Map of North Korea Epicenter of 5.3
September 8, 2016

A possible explosion of magnitude 5.3 occurred in North Korea on September 9, 2016 at 00:30:01 UTC (9:00 am local time).

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