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Date published: February 6, 2020

New Landslide Guidebook for Puerto Rico Residents

A new landslide guidebook released February 5 is now available for Puerto Rico residents to learn more about the landslide hazards that can impact the island.

Date published: January 29, 2020

Magnitude 6.4 Earthquake in Puerto Rico

Links to forecasts and scenerios (below) will continue to be updated, however, text in this story will not be updated unless there is significant change to the aftershock behavior or to the USGS response to the earthquake. 

7-day aftershock forecast [English]

30-day aftershock scenarios [English | Spanish]

Date published: January 28, 2020

Large M7.7 Caribbean Quake Felt as Far Away as Florida

On January 28, 2020, a magnitude 7.7 earthquake struck in the Caribbean Sea, roughly equidistant from the coasts of Jamaica, Cuba and the Cayman Islands. Seismic instruments immediately detected the earthquake that originated at a depth of about 6.2 miles (10 km).

Date published: January 27, 2020

Special Issue Highlights One of the Most Extensive Gas Hydrate Datasets Ever Collected

The USGS and its research partners in India and Japan have reported on one of the most extensive data sets ever collected on the occurrence of natural gas hydrate.

Date published: January 23, 2020

Catalog Shows Complex Rupturing During 2019 Ridgecrest Sequence

The 2019 Ridgecrest earthquake sequence, which startled nearby California residents over the 4 July holiday with magnitude 6.4 and magnitude 7.1 earthquakes, included 34,091 earthquakes overall, detailed in a high-resolution catalog created for the sequence.

Read SSA News...

Date published: January 17, 2020

As Aftershocks Continue in Puerto Rico, USGS Supports Quake Recovery

A sequence of earthquakes in southwest Puerto Rico continues to affect people living there, with the largest recent aftershock a magnitude 5.2 on Jan. 15. U.S. Geological Survey scientists on the island and the mainland are providing up-to-date scientific information to help the Commonwealth government and the Federal Emergency Management Agency make decisions that protect the public.

Date published: January 13, 2020

The complicated plumbing of hot springs and steam vents in Yellowstone National Park

Exploration and sampling of Yellowstone's thermal areas indicates that Yellowstone's hot springs often have surprisingly complex plumbing systems. It is not uncommon to find hot spring pools, which have one type of chemistry, and steam vents, which have totally different chemistry, located in close proximity—or even occupying the same space! Learn what happens when these mix or overlap.

Date published: January 11, 2020

Earthquake Scenarios for Puerto Rico

Earthquakes are unsettling, destructive, and often tragic to the communities they affect. The USGS works diligently to help keep people safer by providing them and their emergency responders the science needed to respond to ongoing hazards.

Last updated February 14, 5pm Pacific time, 2020.

Date published: January 11, 2020

Escenarios de terremotos en Puerto Rico

Los terremotos, como los ocurridos en Puerto Rico, pueden ser preocupantes, destructivos y en muchas ocasiones trágicos para las comunidades afectadas.

Última actualización el 14 de febrero, 5pm, hora del Pacífico, 2020.

Date published: January 6, 2020

Yellowstone—the year 2019 in review

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is...

Date published: December 31, 2019

The Challenges of Arctic Fieldwork

On a far-away island along Alaska’s North Slope coast, conducting fieldwork can be challenging.