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national seismic hazard model
National Seismic Hazard Model
National Seismic Hazard Model
National Seismic Hazard Model

NATIONAL SEISMIC HAZARD MODEL

The National Seismic Hazard Model stands as a testament to scientific innovation in the service of public safety. This congressionally requested update provides an essential tool to many stakeholders by showing where large earthquakes are most likely to occur, allowing for better mitigation and preparedness in those areas.

NATIONAL SEISMIC HAZARD MODEL

The National Seismic Hazard Model stands as a testament to scientific innovation in the service of public safety. This congressionally requested update provides an essential tool to many stakeholders by showing where large earthquakes are most likely to occur, allowing for better mitigation and preparedness in those areas.

map of central US and bar graph
Increasing Rate of Earthquakes Beginning in 2009
Increasing Rate of Earthquakes Beginning in 2009
Increasing Rate of Earthquakes Beginning in 2009

Annual number of earthquakes with a magnitude of 3.0 or larger in the central and eastern United States, 1973–2024. The long-term rate of approximately 25 earthquakes per year increased sharply starting around 2009.

Annual number of earthquakes with a magnitude of 3.0 or larger in the central and eastern United States, 1973–2024. The long-term rate of approximately 25 earthquakes per year increased sharply starting around 2009.

person in yellow hat and blue waders kneels on ground and measures depth of hole in ground
Installing Sensors in Wellfleet, MA
Installing Sensors in Wellfleet, MA
Installing Sensors in Wellfleet, MA

Scientists at the USGS are installing sensors in Wellfleet MA, part of the Cape Cod National Seashore to evaluate the long-term and short-term chemical and geomorphic changes within wetlands. 

Scientists at the USGS are installing sensors in Wellfleet MA, part of the Cape Cod National Seashore to evaluate the long-term and short-term chemical and geomorphic changes within wetlands. 

a sensor sits halfway out of the ground with two tubes sticking out of it surrounded by grass
Installing sensors in Wellfleet, MA
Installing sensors in Wellfleet, MA
Installing sensors in Wellfleet, MA

Scientists at the USGS are installing sensors in Wellfleet MA, part of the Cape Cod National Seashore to evaluate the long-term and short-term chemical and geomorphic changes within wetlands. 

Scientists at the USGS are installing sensors in Wellfleet MA, part of the Cape Cod National Seashore to evaluate the long-term and short-term chemical and geomorphic changes within wetlands. 

picture of the shoreline where a river is meeting the ocean on a blue sky day
Shoreline in Wellfleet
Shoreline in Wellfleet
Shoreline in Wellfleet

As sea-level rise accelerates, vegetation transitions are increasingly observed and USGS scientists are busy assessing those changes. Shoreline at the Cape Cod National Seashore in Wellfleet, MA.

As sea-level rise accelerates, vegetation transitions are increasingly observed and USGS scientists are busy assessing those changes. Shoreline at the Cape Cod National Seashore in Wellfleet, MA.

Puerto Rico and U.S. Virgin Islands (PRVI) National Seismic Hazard Model Program (NSHMP) hazard assessment of 2003.
NSHM of 2003 for Puerto Rico and U.S. Virgin Islands (PRVI)
NSHM of 2003 for Puerto Rico and U.S. Virgin Islands (PRVI)
NSHM of 2003 for Puerto Rico and U.S. Virgin Islands (PRVI)

From the 2003 NSHM by Mueller et al., 2010, the distribution of spectral acceleration (SA in %g) is shown for Puerto Rico and the U.S. Virgin Islands.

Man with brown hair wearing a suit and tie.
David LeBlanc
David LeBlanc
David LeBlanc

Dave LeBlanc serves in the Emergency Management Team as the Continuity of Operations Coordinator to enhance the Survey’s commitment to mission resilience.

Dave LeBlanc serves in the Emergency Management Team as the Continuity of Operations Coordinator to enhance the Survey’s commitment to mission resilience.

Mount St. Helens by A. Mosbrucker
Mount St. Helens by A. Mosbrucker
Mount St. Helens by A. Mosbrucker
Mount St. Helens by A. Mosbrucker

Mount St. Helens by A. Mosbrucker. Looking SE towards the volcano up the valley. 

Person kneeling next to equipment surrounded by rocks and shrubs on a hillslope
The USGS Postfire Landslide Monitoring Station “Maria Ygnacio” within the Los Padres National Forest, California.
The USGS Postfire Landslide Monitoring Station “Maria Ygnacio” within the Los Padres National Forest, California.
The USGS Postfire Landslide Monitoring Station “Maria Ygnacio” within the Los Padres National Forest, California.

The USGS Postfire Landslide Monitoring Station “Maria Ygnacio” is located within the Los Padres National Forest in the Santa Ynez Mountains of southern California. The site consists of surface and subsurface instrumentation that is monitoring the hillslope shown in this image.

lava fountains inside the Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava fountains inside Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava fountains inside Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava inside Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava fountains inside Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava fountains inside Kīlauea crater with rainbow over Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava fountains inside the Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

lava fountains inside the Kīlauea crater
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea
Eruption at the summit of Kīlauea

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

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