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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: 138
Date published: March 2, 2016

Post-Wildfire Landslide Hazards

Post-fire landslides are particularly hazardous because they can occur with little warning, can exert great force on objects in their paths, can strip vegetation, block drainage ways, damage structures, and endanger human life. Our focus is to develop tools and methods for the prediction of post-wildfire landslide activity and hazard delineation.

Date published: March 2, 2016

Debris Flow and Wildfire Evacuation Messaging

What persuades someone to heed a debris flow or wildfire evacuation warning? SAFRR partners in emergency management are especially interested in the results of this study, now underway with Columbia's Center for Research on Environmental Decisions.

Date published: March 2, 2016

Fire Ecology

Ecosystems throughout the western U.S. are often dependent on a particular fire regime to reduce hazardous fuels and rejuvenate forests or even guide evolution of plant life and regulate ecological communities. Today fire’s role is more complicated. For example, fire can favor invasive plants and these invaders may, in turn, alter the fire regime.

Date published: March 2, 2016

Partnership for Community Disaster Resilience

SAFRR is now a partner in the Los Angeles County Community Disaster Resilience project, a 3-year pilot collaboration to promote community resilience in the face of a wide range of public health emergencies.

Date published: March 2, 2016

Change and Disturbances

Organisms have different abilities to adapt to disturbances. Some disturbances can be catastrophic to one species and inconsequential to another. Our Forest and Rangeland Ecosystem Science Center (FRESC) scientists are studying the effects of disturbances on species, biogeochemistry, water quality, habitat connectivity and landscape patterns.

Date published: March 2, 2016

Earthquake Risk Communication Design Storm

Bringing together seismologists, emergency managers, risk communication researchers, and design professionals to develop a framework for earthquake probability messages for both emergency managers and the general public.

Date published: March 2, 2016

Earthquake Hazards Research

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

Date published: March 2, 2016

Partnership with CalVO and Cal EMA

Worked with USGS California Volcano Observatory (CalVO) and California Office of Emergency Services (Cal OES) to plan and stage a workshop to raise awareness, increase buy-in, and gather information for a volcano hazards annex to the California's State emergency plan.

Date published: March 2, 2016

Earthquake Monitoring

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

Date published: March 2, 2016

ARkStorm Scenario

A modeled scenario of U.S. West Coast winter storm events induced by the formation of Atmospheric Rivers (AR) and capable of causing massive and devastating flooding.

Date published: March 2, 2016

"Flood Hazards – A National Threat" Fact Sheet

In the late summer of 2005, the remarkable flooding brought by Hurricane Katrina, which caused more than $200 billion in losses, constituted the costliest natural disaster in U.S. history. However, even in typical years, flooding causes billions of dollars in damage and threatens lives and property in every State.

Date published: March 2, 2016

Living With Wildfires

Students at Art Center College of Design prototyped wildfire awareness campaigns after SAFRR exposed them to wildfire research and safety issues.

Filter Total Items: 407
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.

Year Published: 2008

Effects of lava-dome growth on the crater glacier of Mount St. Helens, Washington: Chapter 13 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

The process of lava-dome emplacement through a glacier was observed for the first time as the 2004-6 eruption of Mount St. Helens proceeded. The glacier that had grown in the crater since the cataclysmic 1980 eruption was split in two by the new lava dome. The two parts of the glacier were successively squeezed against the crater wall....

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Walder, Joseph S.; Schilling, Steve P.; Vallance, James W.; LaHusen, Richard G.
Effects of lava-dome growth on the crater glacier of Mount St. Helens, Washington: Chapter 13 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-13; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Walder, Joseph S.; Schilling, Steve P.; Vallance, James W.; LaHusen, Richard G.

Year Published: 2008

Dynamics of seismogenic volcanic extrusion resisted by a solid surface plug, Mount St. Helens, 2004-2005: Chapter 21 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

The 2004-5 eruption of Mount St. Helens exhibited sustained, near-equilibrium behavior characterized by nearly steady extrusion of a solid dacite plug and nearly periodic occurrence of shallow earthquakes. Diverse data support the hypothesis that these earthquakes resulted from stick-slip motion along the margins of the plug as it was forced...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Iverson, Richard M.
Dynamics of seismogenic volcanic extrusion resisted by a solid surface plug, Mount St. Helens, 2004-2005: Chapter 21 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-21; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Iverson, Richard M.

Year Published: 2008

Extrusion rate of the Mount St. Helens lava dome estimated from terrestrial imagery, November 2004-December 2005: Chapter 12 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Oblique, terrestrial imagery from a single, fixed-position camera was used to estimate linear extrusion rates during sustained exogenous growth of the Mount St. Helens lava dome from November 2004 through December 2005. During that 14-month period, extrusion rates declined logarithmically from about 8-10 m/d to about 2 m/d. The overall ebbing...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Major, Jon J.; Kingsbury, Cole G.; Poland, Michael P.; LaHusen, Richard G.
Extrusion rate of the Mount St. Helens lava dome estimated from terrestrial imagery, November 2004-December 2005: Chapter 12 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-12; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Major, Jon J.; Kingsbury, Cole G.; Poland, Michael P.; LaHusen, Richard G.

Year Published: 2008

Evolving magma storage conditions beneath Mount St. Helens inferred from chemical variations in melt inclusions from the 1980-1986 and current (2004-2006) eruptions: Chapter 33 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Major element, trace element, and volatile concentrations in 187 glassy melt inclusions and 25 groundmass glasses from the 1980-86 eruption of Mount St. Helens are presented, together with 103 analyses of touching FE-Ti oxide pairs from the same samples. These data are used to evaluate the temporal evolution of the magmatic plumbing system...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Blundy, Jon; Cashman, Katharine V.; Berlo, Kim
Evolving magma storage conditions beneath Mount St. Helens inferred from chemical variations in melt inclusions from the 1980-1986 and current (2004-2006) eruptions: Chapter 33 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-33; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Blundy, Jon; Cashman, Katharine V.; Berlo, Kim

Year Published: 2008

Frictional properties of the Mount St. Helens gouge: Chapter 20 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Frictional properties of gouge bounding the solid dacite plug that extruded at Mount St. Helens during 2004 and 2005 may have caused stick-slip upward motion of the plug and associated seismicity. Laboratory experiments were performed with a ring-shear device to test the dependence of the peak and steady-state frictional strength of the gouge...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Moore, Peter L.; Iverson, Neal R.; Iverson, Richard M.
Frictional properties of the Mount St. Helens gouge: Chapter 20 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-20; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Moore, Peter L.; Iverson, Neal R.; Iverson, Richard M.

Year Published: 2008

Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite: Chapter 32 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Textural, compositional, and mineralogical data are reported and interpreted for a large population of clinoamphibole phenocrysts in 22 samples from the seven successive dacite spines erupted at Mount St. Helens between October 2004 and January 2006. Despite the uniformity in bulk composition of magma erupted since 2004, there is striking...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Thornber, Carl R.; Pallister, John S.; Lowers, Heather; Rowe, Michael C.; Mandeville, Charles W.; Meeker, Gregory P.
Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite: Chapter 32 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-32; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Thornber, Carl R.; Pallister, John S.; Lowers, Heather A.; Rowe, Michael C.; Mandeville, Charles W.; Meeker, Gregory P.

Year Published: 2008

From dome to dust: shallow crystallization and fragmentation of conduit magma during the 2004-2006 dome extrusion of Mount St. Helens, Washington: Chapter 19 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

An unusual feature of the 2004-6 eruptive activity of Mount St. Helens has been the continuous growth of successive spines that are mantled by thick fault gouge. Fault gouge formation requires, first, solidification of ascending magma within the conduit, then brittle fragmentation and cataclastic flow. We document these processes through field...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Cashman, Katharine V.; Thornber, Carl R.; Pallister, John S.
From dome to dust: shallow crystallization and fragmentation of conduit magma during the 2004-2006 dome extrusion of Mount St. Helens, Washington: Chapter 19 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-19; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Cashman, Katharine V.; Thornber, Carl R.; Pallister, John S.

Year Published: 2008

Remote camera observations of lava dome growth at Mount St. Helens, Washington, October 2004 to February 2006: Chapter 11 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

Images from a Web-based camera (Webcam) located 8 km north of Mount St. Helens and a network of remote, telemetered digital cameras were used to observe eruptive activity at the volcano between October 2004 and February 2006. The cameras offered the advantages of low cost, low power, flexibility in deployment, and high spatial and temporal...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Poland, Michael P.; Dzurisin, Daniel; LaHusen, Richard G.; Major, John J.; Lapcewich, Dennis; Endo, Elliot T.; Gooding, Daniel J.; Schilling, Steve P.; Janda, Christine G.
Remote camera observations of lava dome growth at Mount St. Helens, Washington, October 2004 to February 2006: Chapter 11 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-11; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Poland, Michael P.; Dzurisin, Daniel; LaHusen, Richard G.; Major, John J.; Lapcewich, Dennis; Endo, Elliot T.; Gooding, Daniel J.; Schilling, Steve P.; Janda, Christine G.

Year Published: 2008

Photogeologic maps of the 2004-2005 Mount St. Helens eruption: Chapter 10 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

The 2004-5 eruption of Mount St. Helens, still ongoing as of this writing (September 2006), has comprised chiefly lava dome extrusion that produced a series of solid, faultgouge-mantled dacite spines. Vertical aerial photographs taken every 2 to 4 weeks, visual observations, and oblique photographs taken from aircraft and nearby observation...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Herriott, Trystan M.; Sherrod, David R.; Pallister, John S.; Vallance, James W.
Photogeologic maps of the 2004-2005 Mount St. Helens eruption: Chapter 10 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-10; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Herriott, Trystan M.; Sherrod, David R.; Pallister, John S.; Vallance, James W.

Year Published: 2008

Radar interferometry observations of surface displacements during pre- and coeruptive periods at Mount St. Helens, Washington, 1992-2005: Chapter 18 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

We analyzed hundreds of interferograms of Mount St. Helens produced from radar images acquired by the ERS-1/2, ENVISAT, and RADARSAT satellites during the 1992-2004 preeruptive and 2004-2005 coeruptive periods for signs of deformation associated with magmatic activity at depth. Individual interferograms were often contaminated by atmospheric...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Poland, Michael; Lu, Zhong
Radar interferometry observations of surface displacements during pre- and coeruptive periods at Mount St. Helens, Washington, 1992-2005: Chapter 18 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-18; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Poland, Michael; Lu, Zhong

Year Published: 2008

Use of thermal infrared imaging for monitoring renewed dome growth at Mount St. Helens, 2004: Chapter 17 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006

A helicopter-mounted thermal imaging radiometer documented the explosive vent-clearing and effusive phases of the eruption of Mount St. Helens in 2004. A gyrostabilized gimbal controlled by a crew member housed the radiometer and an optical video camera attached to the nose of the helicopter. Since October 1, 2004, the system has provided...

Sherrod, David R.; Scott, William E.; Stauffer, Peter H.; Schneider, David J.; Vallance, James W.; Wessels, Rick L.; Logan, Matthew; Ramsey, Michael S.
Use of thermal infrared imaging for monitoring renewed dome growth at Mount St. Helens, 2004: Chapter 17 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006; 2008; PP; 1750-17; A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750); Schneider, David J.; Vallance, James W.; Wessels, Rick L.; Logan, Matthew; Ramsey, Michael S.

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Plume from lava flow
June 2, 2018

Kīlauea Volcano — Lava Flowing into Green Lake

As fissure 8 lava flowed into Green Lake, the lake water boiled away, sending a white ...

Aerial of lava flow
June 2, 2018

Kīlauea Volcano — Overflight of Fissure 8 Advancement

USGS scientists on HVO's overflight this morning (June 2) captured this image of the ...

Aerial photo of vog
June 1, 2018

Kīlauea Volcano — Fissure 8 Lava Flow

Fissure 8 continues to feed lava into multiple flow lobes. One lobe is advancing through agricultural lands toward the northeast, as shown in this image taken from a helicopter overflight on June 1, 2018, at 6:21 AM.

June 1, 2018

Kīlauea Volcano — Caldera Changes (May 23 - 31)

This animated GIF shows a pair of radar amplitude images that were acquired by the Italian Space Agency's Cosmo-SkyMed satellite system. The images illustrate changes to the ...

June 1, 2018

USGS Status Update of Kīlauea Volcano - June 1, 2018

USGS Hawaiian Volcano Observatory
Status of Kīlauea Volcano
June 1, 2018 
Jessica Ball, USGS Volcanologist

View of fissure 8 fountaining
June 1, 2018

Kīlauea Volcano — Fissure 8

Viewed from the intersection of Nohea and Leilani Streets at 10:15AM HST on June 1, the Fissure 8 ...

May 31, 2018

Jersey Shore Field Work

Deployment of an Edgetech 512i subbottom profiler from the deck of Stockton University's R/V Petrel near Little Egg Inlet, NJ. The USGS Coastal and Marine Geology Program is working to characterize the sea floor and shallow substrate in nearshore waters, using high-resolution geophysical techniques, sediment sampling, and sea-floor photography and videography.
 

May 31, 2018

Kīlauea Volcano — Halema‘uma‘u Crater Changes

A UAS mission on May 31, 2018, filmed details of the dramatic changes occurring within Halema‘uma‘u crater at Kīlauea's summit since explosive eruptions of ...

Sunrise looking photo but created by lava fountaining in the early morning.
May 31, 2018

Kīlauea Volcano — Early Morning Fissure 8 Activity

Crews make visual observations of activity at fissure 8 around 5:30 a....

Aerial photo of fissures
May 31, 2018

Kīlauea Volcano — Advancing Lobes from Fissure 8

Helicopter overflight shows advancing lobes from fissure 8 (fissure 8 is not pictured but located to the right, out of view). Advance rates were less than 100 yards per hour for the three lobes of the flow, as measured during the overnight hours. The flow moved north of Highway 132 in the vicinity of Noni Farms and Halekamahina roads, from which the two easternmost lobes advanced in a more...

Aerial photo of lava flows
May 31, 2018

Kīlauea Volcano — Fissure 18 Lava Flow

Lava from fissure 18 travels to the southeast (lower left of photo). The flow front that had approached the ocean yesterday...

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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.

Date published: August 25, 2017

Many Texas Beaches Likely to Erode, Be Overwashed, or Inundated by 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.

UPDATE: This story has been revised to reflect new NOAA-National Hurricane Center storm surge projections which were released August 25 at 7 a.m.

Date published: August 24, 2017

Many Texas Beaches Likely to Erode, Be Overwashed, or Inundated by 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.

UPDATE: This story has been revised to reflect new NOAA-National Hurricane Center storm surge projections which were released August 25 at 7 a.m.

Date published: August 24, 2017

USGS Installs Storm-tide Sensors along Texas Coast prior to Harvey’s Arrival

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

Storm-tide sensors are being installed at key locations along the Texas Gulf Coast by the U.S. Geological Survey in advance of Hurricane Harvey.

Filter Total Items: 110