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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: 142
Date published: April 13, 2016

Coastal and Marine Ecosystem Science

We bring together multidisciplinary expertise focused on developing tools and models to improve understanding of how healthy ecosystems function as well as how they respond to environmental changes and human impacts including ecosystem restoration. Research studies address coral reef, coastal wetland, benthic habitat and groundwater resources.

Date published: April 12, 2016

Hurricane Sandy Spatial Data Mapping Application

USGS scientists at the Wetland and Aquatic Research Center and other offices received funding for studies related to habitat change, storm surge and ecological modeling, migratory bird impacts, and other topics of interest. The Hurricane Sandy Spatial Data Mapping Application showcases the data and analytical products resulting from these studies.

Date published: March 17, 2016

Volcano Hazards Assessments Help Mitigate Disasters

The Volcano Hazards Program develops long-range volcano hazards assessments. These includes a summary of the specific hazards, their impact areas, and a map showing ground-hazard zones. The assessments are also critical for planning long-term land-use and effective emergency-response measures, especially when a volcano begins to show signs of unrest.

Date published: March 14, 2016
Status: Completed

Earthquake Early Warning (EEW) Support

An existing technological capability (not yet implemented in CA) for providing a few seconds of advance notification before arrival of earthquake-generated seismic waves causing ground shaking, with current efforts underway to move forward with providing users with the means to utilize the system for warning and preparedness action plans.

Date published: March 7, 2016

Earthquakes Hazards

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

Date published: March 7, 2016

Landslides Information

View current advisories, events, and what is going on in the news.

Date published: March 7, 2016

U.S. Volcano Information

There are 169 potentially active volcanoes in the U.S., and the USGS Volcano Hazards Program provides warnings of unrest and eruption for these volcanoes. We offer volcano monitoring data, provide maps and geologic information, conduct research how volcanoes work, and engage with community education and outreach.

Date published: March 7, 2016

Flood Information

The USGS provides practical, unbiased information about the Nation's rivers and streams that is crucial in mitigating hazards associated with floods. This site provides information about the USGS activities, data, and services provided during regional high-flow events, such as hurricanes or multi-state flooding events.

Date published: March 2, 2016

Mission Support

Our scientists work with NASA and other space agencies to lead investigations, select rover landing sites, create geologic maps and cartographic products for numerous spacecraft missions throughout our solar system. Our Astrogeology Science Center continues to provide support for numerous past, present and future space missions.

Date published: March 2, 2016

Yellowstone Volcano Observatory (YVO)

Monitors and studies the active geologic processes and hazards of the Yellowstone Plateau volcanic field and its caldera. Yellowstone National Park contains the largest and most diverse collection of natural thermal features in the world. YVO also monitors volcanic activity in Montana, Wyoming, Colorado, Utah, and New Mexico.

Date published: March 2, 2016

A Hub for Planetary Research

The USGS Astrogeology Science Center is a hub for planetary research. The center provides guest facilities, labs, and numerous cartographic resources for both the scientific community and the general public. Geologists, archivists, data specialists, and cartographers are employed at the center to assist the planetary science community.

Date published: March 2, 2016

Satellite Data Applications for Fire Science

Our satellite remote sensing research and applications are essential for providing required data for mapping fire fuels, assessing fire effects, monitoring fire danger, and measuring progress in implementing the National Fire Plan. Land management agencies, scientific communities, and citizenry affected by wildland fires can benefit from our work.

Filter Total Items: 407
Year Published: 2008

Catalog of Mount St. Helens 2004-2007 Dome Samples with Major- and Trace-Element Chemistry

Sampling and analysis of eruptive products at Mount St. Helens is an integral part of volcano monitoring efforts conducted by the U.S. Geological Survey?s Cascades Volcano Observatory (CVO). The objective of our eruption sampling program is to enable petrological assessments of pre-eruptive magmatic conditions, critical for ascertaining mechanisms...

Thornber, Carl R.; Pallister, John S.; Rowe, Michael C.; McConnell, Siobhan; Herriott, Trystan M.; Eckberg, Alison; Stokes, Winston C.; Cornelius, Diane Johnson; Conrey, Richard M.; Hannah, Tammy; Taggart, Joseph E.; Adams, Monique; Lamothe, Paul J.; Budahn, James R.; Knaack, Charles M.
Catalog of Mount St. Helens 2004-2007 Dome Samples with Major- and Trace-Element Chemistry; 2008; OFR; 2008-1130; Thornber, Carl R.; Pallister, John S.; Rowe, Michael C.; McConnell, Siobhan; Herriott, Trystan M.; Eckberg, Alison; Stokes, Winston C.; Cornelius, Diane Johnson; Conrey, Richard M.; Hannah, Tammy; Taggart, Joseph E., Jr.; Adams, Monique; Lamothe, Paul J.; Budahn James R.; Knaack, Charles M.

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.

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June 5, 2018

Kīlauea Volcano — Tracking Active Lava Flows (Audio-described)

U.S. Geological survey scientists use fly-overs to track active lava flows. 

A lava fountain forming a lava channel
June 5, 2018

Kīlauea Volcano — Lava Fountaining

Lava fountaining continues at fissure 8, although overnight crews reported reduced heights of 40-50 m (130-164 ft). The fountain has built a 35 m (115 ft) high cone, and an actively-growing spatter rampart on its eastern side. The ...

Aerial view of lava filling previous are of Kapoho Bay
June 5, 2018

Kīlauea Volcano — Kapoho Bay Filled with Lava

As of the morning of June 5, the fissure 8 lava flow front had completely filled Kapoho Bay.

plume rising from the crater
June 5, 2018

Kīlauea Volcano — Halema‘uma‘u Crater

Morning view of Halema'uma'u and the Kīlauea Caldera from the Kīlauea overlook. Heavy steam dominates the view, and strong winds are blowing the ...

Aerial of Halema`uma`u crater
June 5, 2018

Kīlauea Volcano — Halema‘uma‘u Crater Aerial

HVO scientists captured this aerial view of a much-changed Halema‘uma‘u during their overflight of the summit this afternoon. Explosions and collapse within Halema‘uma‘u have enlarged the crater (foreground) that previously hosted the summit ...

June 4, 2018

USGS Status Update of Kīlauea Volcano - June 4, 2018

USGS Hawaiian Volcano Observatory Update of Kīlauea Volcano for June 4, 2018. On Camera: Jessica Ball, USGS Volcanologist.
 

June 4, 2018

Kīlauea Volcano — Lava Entering Kapoho Bay

Video from helicopter overflight of Kīlauea Volcano's lower East Rift Zone on June 4, 2018, shows lava from ...

side by side of thermal images
June 4, 2018

Kīlauea Volcano — Fissure 8 Thermal Images

What a difference four days makes! These thermal images of fissure 8 fountains erupting on...

Ocean entry at Kapoho Bay
June 4, 2018

Kīlauea Volcano — Kapaho Bay Ocean Entry

Video from helicopter overflight of Kīlauea Volcano's lower East Rift Zone on June 4, 2018, shows lava from fissure 8...

June 4, 2018

Kīlauea Volcano — Video Compilation of Kapoho Bay Ocean Entry

This short video compilation shows conditions at Kapoho Bay during a helicopter overflight on June 4, 2018, around 6:15 a.m. HST and again around 1:38 p.m. HST. By 6:15 a.m., ...

June 3, 2018

Kīlauea Volcano — Overflight June 3

 

This video was taken on the June 3 7AM HST helicopter overflight, hovering offshore and looking up the flowfront. Nearly all of the front was active and advancing; advance rates were estimated at an average of 250 feet/hour (76 m/hr), and as of 7AM the flow was 500 yards (457 m) from the ocean.

Filter Total Items: 338
Date published: September 22, 2017

USGS Continues Response to Four Hurricanes

As thousands of people remain displaced by or are recovering from one of the four hurricanes that have affected the United States the past month, the U.S. Geological Survey is in the field providing science that will help with recovery from these historic hurricanes and with preparing for the next storm.

Date published: September 22, 2017

USGS Tidal Network Monitoring Elevated Water Levels Off Hampton Roads

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Jose, visit the USGS Hurricane Jose page at https://www.usgs.gov/jose.

Date published: September 19, 2017

Magnitude 7.1 Earthquake in Mexico

The USGS has up-to-date details on the September 19, 2017 event.

Attribution: Natural Hazards
Date published: September 19, 2017

More than a dozen USGS Storm-Tide Sensors Deployed for Hurricane Jose

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Jose, visit the USGS Hurricane Jose page at https://www.usgs.gov/jose.

Date published: September 19, 2017

Florida Streamgages Measure Record Peaks Following Hurricane Irma

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

Date published: September 18, 2017

USGS field crews in Puerto Rico are preparing for Hurricane Maria

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Maria, visit the USGS Hurricane Maria page at https://www.usgs.gov/maria.

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: September 15, 2017

Landsat Images Before and After Harvey Illustrate Flooding in Texas

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Harvey, visit the USGS Hurricane Harvey page at https://www.usgs.gov/harvey.

Date published: September 13, 2017

USGS Measures the Impacts of Hurricane Irma

Hurricane Irma’s heavy rains and storm surge caused severe flooding in parts of the Southeast.

Date published: September 13, 2017

Throughout Hurricane Season, USGS Science is There Before, During, and After the Storm

When a major storm is on the horizon, the USGS uses its water monitoring, coastal change, mapping, and modeling expertise to help prepare for, respond to, and recover from hurricanes and tropical storms.

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.