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Natural Hazards

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Costs and consequences of natural hazards can be enormous; each year more people and infrastructure are at risk. We develop and apply hazards science to help protect U.S. safety, security, and economic well being. These scientific observations, analyses, and research are crucial for the Nation to become more resilient to natural hazards.

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Filter Total Items: 110
Date published: March 2, 2016

Geomagnetism Monitoring

The USGS Geomagnetism Program currently operates 14 magnetic observatories. Magnetometer data are collected at these facilities, and the data are then transmitted to Program headquarters in Golden, Colorado.

Date published: March 2, 2016

Alaska Volcano Observatory (AVO)

The AVO is a partnership among the USGS, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys. To mitigate volcanic hazards, AVO monitors and studies Alaska's hazardous volcanoes to forecast and record eruptive activity. AVO also monitors volcanic activity in the Commonwealth of the Northern Mariana Islands.

Date published: March 2, 2016

Landslides Research

Our Program researches activities to make accurate landslide hazard maps and forecasts of landslide occurrences.

Date published: March 2, 2016

USGS California Volcano Observatory (CalVO)

CalVO operates real-time volcano monitoring networks, disseminates forecasts and notifications of significant activity, assesses volcano hazards, researches volcano processes, and works with communities to prepare for volcanic eruptions in California and Nevada. The Observatory is located at USGS offices in Menlo Park, California.

Date published: March 2, 2016

Landslide Monitoring

Landslide sites and data for learning more about the physical processes that trigger landslides or control their movement.

Date published: March 2, 2016

Cascades Volcano Observatory (CVO)

The CVO staff conduct research on many aspects of active volcanism, respond to dangerous volcanic activity in many parts of the world, and maintain a close watch over volcanoes in Washington, Oregon and Idaho. The USGS established CVO in Vancouver, Washington, after the May 18, 1980, eruption of Mount St. Helens.

Date published: March 2, 2016

"The First Sue Nami"

Tsunami awareness public service announcements come from collaboration among the USGS SAFRR team, outside partners, and Pasadena's Art Center College of Design.

Date published: March 2, 2016

Hawaiian Volcano Observatory (HVO)

HVO operates monitoring networks, assesses hazards, and issues notifications of volcanic activity and earthquakes in the State of Hawai‘i. HVO scientists conduct fundamental research on volcanic processes and work to educate the communities at risk. HVO is located in Hawaiʻi Volcanoes National Park on the Island of Hawaii.

Date published: March 1, 2016
Status: Completed

SAFRR CORE

CORE - Cadre of Relevant Experts

Date published: January 1, 2016
Status: Completed

National Seismic Hazard Map Usability Study

How can we better communicate seismic hazards to non-scientists?

Date published: August 19, 2014

Estuarine Physical Response to Storms

The Estuarine Physical Response to Storms Project will assess the estuarine and adjacent wetland  responses of three Atlantic lagoonal estuaries to major storm events such as Hurricane Sandy. The estuarine systems include the Barnegat Bay-Little Egg Harbor Estuary, the Chincoteague Bay, and Jamaica Bay, NY. Evaluations of sediment transport, geomorphic change, circulation, wetland stability....

Date published: April 25, 2014
Status: Completed

Tsunami Scenario

A hypothetical but likely tsunami scenario affecting California's coastline, representing studies and models of damage, restoration, and social and economic impacts of a tsunami generated by a magnitude 9.1 megathrust Alaskan earthquake.

Filter Total Items: 406
Year Published: 2008

Major and EDXRF Trace Element Chemical Analyses of Volcanic Rocks from Lassen Volcanic National Park and Vicinity, California

This open-file report presents WDXRF major-element chemical data for late Pliocene to Holocene volcanic rocks collected from Lassen Volcanic National Park and vicinity, California. Data for Rb, Sr, Ba, Y, Zr, Nb, Ni, Cr, Zn and Cu obtained by EDXRF are included for many samples. Data are presented in an EXCEL spreadsheet and are keyed to rock...

Clynne, Michael A.; Muffler, L.J.P.; Siems, D.F.; Taggart, J.E.; Bruggman, Peggy
Major and EDXRF Trace Element Chemical Analyses of Volcanic Rocks from Lassen Volcanic National Park and Vicinity, California; 2008; OFR; 2008-1091; Clynne, Michael A.; Muffler, L. J. P.; Siems, D. F.; Taggart, J. E., Jr.; Bruggman, Peggy

Year Published: 2008

Publications of the Volcano Hazards Program 2006

The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the Geologic Hazards Assessments subactivity as funded by Congressional appropriation. Investigations are carried out in the Geology and Hydrology Disciplines of the USGS and with cooperators at the Alaska Division of Geological and Geophysical Surveys, University of...

Nathenson, Manuel
Publications of the Volcano Hazards Program 2006; 2008; OFR; 2008-1006; Nathenson, Manuel

Year Published: 2008

Chemical Analyses of Pre-Holocene Rocks from Medicine Lake Volcano and Vicinity, Northern California

Chemical analyses are presented in an accompanying table (Table 1) for more than 600 pre-Holocene rocks collected at and near Medicine Lake Volcano, northern California. The data include major-element X-ray fluorescence (XRF) analyses for all of the rocks plus XRF trace element data for most samples, and instrumental neutron activation analysis (...

Donnelly-Nolan, Julie M.
Chemical Analyses of Pre-Holocene Rocks from Medicine Lake Volcano and Vicinity, Northern California; 2008; OFR; 2008-1094; Donnelly-Nolan, Julie M.

Year Published: 2008

Database of the Geology and Thermal Activity of Norris Geyser Basin, Yellowstone National Park

This dataset contains contacts, geologic units and map boundaries from Plate 1 of USGS Professional Paper 1456, 'The Geology and Remarkable Thermal Activity of Norris Geyser Basin, Yellowstone National Park, Wyoming.' The features are contained in the Annotation, basins_poly, contours, geology_arc, geology_poly, point_features, and stream_arc...

Flynn, Kathryn; Graham Wall, Brita; White, Donald E.; Hutchinson, Roderick A.; Keith, Terry E.C.; Clor, Laura; Robinson, Joel E.
Database of the Geology and Thermal Activity of Norris Geyser Basin, Yellowstone National Park; 2008; DS; 324; Flynn, Kathryn; Graham Wall, Brita; White, Donald E.; Hutchinson, Roderick A.; Keith, Terry E. C.; Clor, Laura; Robinson, Joel E.

Year Published: 2008

Converting NAD83 GPS Heights Into NAVD88 Elevations With LVGEOID, a Hybrid Geoid Height Model for the Long Valley Volcanic Region, California

A GPS survey of leveling benchmarks done in Long Valley Caldera in 1999 showed that the application of the National Geodetic Survey (NGS) geoid model GEOID99 to tie GPS heights to historical leveling measurements would significantly underestimate the caldera ground deformation (known from other geodetic measurements). The NGS geoid model was able...

Battaglia, Maurizio; Dzurisin, Daniel; Langbein, John; Svarc, Jerry; Hill, David P.
Converting NAD83 GPS Heights Into NAVD88 Elevations With LVGEOID, a Hybrid Geoid Height Model for the Long Valley Volcanic Region, California; 2008; SIR; 2007-5255; Battaglia, Maurizio; Dzurisin, Daniel; Langbein, John; Svarc, Jerry; Hill, David P.

Year Published: 2008

Volcan Baru: Eruptive History and Volcano-Hazards Assessment

Volcan Baru is a potentially active volcano in western Panama, about 35 km east of the Costa Rican border. The volcano has had four eruptive episodes during the past 1,600 years, including its most recent eruption about 400?500 years ago. Several other eruptions occurred in the prior 10,000 years. Several seismic swarms in the 20th century and a...

Sherrod, David R.; Vallance, James W.; Tapia Espinosa, Arkin; McGeehin, John P.
Volcan Baru: Eruptive History and Volcano-Hazards Assessment; 2008; OFR; 2007-1401; Sherrod, David R.; Vallance, James W.; Tapia Espinosa, Arkin; McGeehin, John P.

Year Published: 2008

Constraints and conundrums resulting from ground-deformation measurements made during the 2004-2005 dome-building eruption of Mount St. Helens, Washington: Chapter 14 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

A prolonged period of dome growth at Mount St. Helens starting in September-October 2004 provides an opportunity to study how the volcano deforms before, during, and after an eruption by using modern instruments and techniques, such as global positioning system (GPS) receivers and interferometric synthetic aperture radar (InSAR), together...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Dzurisin, Daniel; Lisowski, Michael; Poland, Michael P.; Sherrod, David R.; LaHusen, Richard G.
Constraints and conundrums resulting from ground-deformation measurements made during the 2004-2005 dome-building eruption of Mount St. Helens, Washington: Chapter 14 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-14; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Dzurisin, Daniel; Lisowski, Michael; Poland, Michael P.; Sherrod, David R.; LaHusen, Richard G.

Year Published: 2008

Timing of degassing and plagioclase growth in lavas erupted from Mount St. Helens, 2004-2005, from 210Po-210Pb-226Ra disequilibria: Chapter 37 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Disequilibrium between 210Po, 210Pb, and 226Ra was measured on rocks and plagioclase mineral separates erupted during the first year of the ongoing eruption of Mount St. Helens. The purpose of this study was to monitor the volatile fluxing and crystal growth that occurred in the weeks, years, and decades leading up to eruption. Whole-rock...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Reagan, Mark K.; Cooper, Kari M.; Pallister, John S.; Thornber, Carl R.; Wortel, Matthew
Timing of degassing and plagioclase growth in lavas erupted from Mount St. Helens, 2004-2005, from 210Po-210Pb-226Ra disequilibria: Chapter 37 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-37; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Reagan, Mark K.; Cooper, Kari M.; Pallister, John S.; Thornber, Carl R.; Wortel, Matthew

Year Published: 2008

238U-230Th-226Ra disequilibria in dacite and plagioclase from the 2004-2005 eruption of Mount St. Helens: Chapter 36 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Uranium-series disequilibria in whole-rock samples and mineral separates provide unique insights into the time scales and processes of magma mixing, storage, and crystallization. We present 238U- 230Th-226Ra data for whole-rock dacite and gouge samples and for plagioclase separated from two dacite samples, all erupted from Mount St. Helens...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Cooper, Kari M.; Donnelly, Carrie T.
238U-230Th-226Ra disequilibria in dacite and plagioclase from the 2004-2005 eruption of Mount St. Helens: Chapter 36 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-36; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Cooper, Kari M.; Donnelly, Carrie T.

Year Published: 2008

Trace element and Pb isotope composition of plagioclase from dome samples from the 2004-2005 eruption of Mount St. Helens, Washington: Chapter 35 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

We report the results of in-situ laser ablation ICP–MS analyses of anorthite content, trace-element (Li, Ti, Sr, Ba, La, Pr, Ce, Nd, Eu, Pb) concentrations, and Pb-isotope compositions in plagioclase from eight dome-dacite samples collected from the 2004-5 eruption of Mount St. Helens and, for comparison, from three dome samples from 1981-85...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Kent, Adam J.R.; Rowe, Michael C.; Thornber, Carl R.; Pallister, John S.
Trace element and Pb isotope composition of plagioclase from dome samples from the 2004-2005 eruption of Mount St. Helens, Washington: Chapter 35 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-35; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Kent, Adam J.R.; Rowe, Michael C.; Thornber, Carl R.; Pallister, John S.

Year Published: 2008

Constraints on the size, overpressure, and volatile content of the Mount St. Helens magma system from geodetic and dome-growth measurements during the 2004-2006+ eruption: Chapter 22 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

During the ongoing eruption at Mount St. Helens, Washington, lava has extruded continuously at a rate that decreased from ~7-9 m3 /s in October 2004 to 1-2 m3 /s by December 2005. The volume loss in the magma reservoir estimated from the geodetic data, 1.6-2.7×10 7 m3 , is only a few tens of percent of the 7.5×10 7 m3 volume that had...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Mastin, Larry G.; Roeloffs, Evelyn; Beeler, Nick M.; Quick, James E.
Constraints on the size, overpressure, and volatile content of the Mount St. Helens magma system from geodetic and dome-growth measurements during the 2004-2006+ eruption: Chapter 22 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-22; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Mastin, Larry G.; Roeloffs, Evelyn; Beeler, Nick M.; Quick, James E.

Year Published: 2008

Plagioclase populations and zoning in dacite of the 2004-2005 Mount St. Helens eruption: constraints for magma origin and dynamics: Chapter 34 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

We investigated plagioclase phenocrysts in dacite of the 2004-5 eruption of Mount St. Helens to gain insights into the magmatic processes of the current eruption, which is characterized by prolonged, nearly solid-state extrusion, low gas emission, and shallow seismicity. In addition, we investigated plagioclase of 1980-86 dacite. Light and...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Streck, Martin J.; Broderick, Cindy A.; Thronber, Carl R.; Clynne, Michael A.; Pallister, John S.
Plagioclase populations and zoning in dacite of the 2004-2005 Mount St. Helens eruption: constraints for magma origin and dynamics: Chapter 34 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-34; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Streck, Martin J.; Broderick, Cindy A.; Thronber, Carl R.; Clynne, Michael A.; Pallister, John S.

Filter Total Items: 1,844
May 11, 2018

USGS Status Update of Kīlauea Volcano - May 11, 2018

USGS Hawaiian Volcano Observatory status of Kilauea volcano in Hawaii on May 11, 2018 by scientist in charge Tina Neal.
 

May 10, 2018

USGS Status Update of Kīlauea Volcano - May 10, 2018

USGS Hawaiian Volcano Observatory status of Kilauea volcano in Hawaii on May 10, 2018 by scientist in charge Tina Neal.

Ash column rises from the Overlook crater at the summit of Kīlauea Volcano.
May 9, 2018

Ash column rises from the Overlook crater at the summit of Kīlauea Vol

Ash column rises from the Overlook crater at the summit of Kīlauea Volcano. HVO's interpretation is that the explosion was triggered by a rockfall from the steep walls of Overlook crater....

May 8, 2018

New 3D Model of the Halema‘uma‘u Crater Summit Lava Lake (May 8, 2018)

The summit lava lake in Halema‘uma‘u crater has dropped substantially over the past week due to ...

May 8, 2018

Kīlauea East Rift Zone Eruption (May 8, 2018)

Aerial view of fissure 13 shortly after it opened this afternoon. The spattering fissure cut across Leilani Street, between Kahukai and Pohoiki Road.

May 7, 2018

Kīlauea East Rift Zone Eruption (May 7, 2018)

Aerial view of fissure 12 at 1:15pm HST today. Bursting gas bubbles blasted spatter (bits of molten lava) skyward, with some fragments reaching as hight as the tree tops. This fissure opened in the forest south of Malama Street in Leilani Estates.

Steam rises from fissure 9 on Moku Street.
May 7, 2018

Steam rises from fissure 9 on Moku Street.

Steam rises from fissure 9 on Moku Street in the Leilani Estates...

Cracks in Highway; orange paint was used to outline the cracks
May 7, 2018

Cracks in Highway; orange paint was used to outline the cracks

Cracks in Highway 130; orange paint was used to outline the cracks. The road remained closed for much of the day on 5/7/18.

May 7, 2018

Halema‘uma‘u lava lake level continues to drop--

This video of Halema‘uma‘u lava lake from this evening shows the agitated lake surface caused by intemittent rock falls. Falling rocks are common since the ...

A lava flow moves on Makamae Street in Leilani Estates.
May 6, 2018

A lava flow moves on Makamae Street in Leilani Estates.

 A lava flow moves on Makamae Street in Leilani Estates at 09:32 am local time, on May 6, 2018.

Kilauea summit lava lake
May 6, 2018

Kilauea summit lava lake

The summit lava lake has dropped significantly over the past few days, and, as of the evening of 5/6/18, was roughly 220m below the crater rim. This very wide angle camera view captures the entire north portion of...

Filter Total Items: 328
Date published: September 8, 2017

River Levels Set Records in Texas: USGS Continues to Monitor Rivers in the State Due to Flooding

Editor’s note: this news release will be updated online with more information on the streamgage records being set in Texas as it becomes available.

Rivers and streams reached record levels as a result of Hurricane Harvey’s rainfall, with about 40 U.S. Geological Survey streamgages measuring record peaks.

Date published: September 8, 2017

USGS Efforts Continue After Harvey

As Harvey’s record breaking rainfall and catastrophic flood waters recede in Texas and western Louisiana, U.S. Geological Survey teams are collecting high water marks, monitoring water levels and coastal change, retrieving storm tide sensors and collecting samples for water quality analysis.

Date published: September 8, 2017

Hurricane Irma to significantly affect beaches from Florida to South Carolina

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Date published: September 8, 2017

Magnitude 8.2 Earthquake in Mexico

A magnitude 8.2 earthquake struck offshore Chiapas, Mexico on September 7, 2017 at 11:49 local time (September 8 at 04:49UTC).

 

Date published: September 7, 2017

USGS Installs Storm-Tide Sensors along Georgia and South Carolina Coasts prior to Hurricane Irma’s Arrival

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Date published: September 6, 2017

USGS Prepares for Hurricane Irma

 To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Date published: September 6, 2017

USGS Installs Storm-Tide Sensors along Florida’s Coasts prior to Hurricane Irma’s Arrival

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Date published: September 6, 2017

USGS Science Leads the Way for National Preparedness

With hurricanes in the east and wildfires in the west, natural hazards have the potential to impact a majority of Americans every year. USGS science provides part of the foundation for emergency preparedness whenever and wherever disaster strikes.

Date published: September 5, 2017

USGS Installs Storm-Tide Sensors in Puerto Rico for Hurricane Irma

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Date published: August 30, 2017

Science to Weather the Storm

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Harvey, visit the USGS Hurricane Harvey page.

Date published: August 29, 2017

USGS Crews Measure Record Flooding in South-Central Texas

Reporters: Do you want to interview USGS scientists as they measure flooding? Please contact Jennifer LaVista or Lynne Fahlquist. 

U.S. Geological Survey field crews are measuring record flooding in parts of south-central Texas following intense rainfall from Tropical Storm Harvey.

Date published: August 25, 2017

USGS Prepares for Hurricane Harvey

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Harvey, visit the USGS Hurricane Harvey page.