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online search by time window, area, magnitude, and more
2025 USGS and ANSS Earthquake Monitoring Report
A geonarrative exploring domestic and global earthquake monitoring efforts in 2025
A geonarrative exploring domestic and global earthquake monitoring efforts in 2025
Significant Earthquakes, Past 30 days
Significant Earthquakes, Past 30 days
5.0
38 km SSE of Spearman, Texas
2026-07-23 10:21:44 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
5.7 km
5.5
4 km SSW of Chupaca, Peru
2026-07-19 02:24:36 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
6.4
86 km WSW of Puerto Madero, Mexico
2026-07-17 15:20:07 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
10.0 km
7.3
58 km WSW of Puerto Madero, Mexico
2026-07-17 14:48:40 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
18.6 km
6.2
32 km WSW of Sarangani, Philippines
2026-07-14 15:49:39 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
46.4 km
4.3
18 km WSW of Johannesburg, CA
2026-07-13 16:40:55 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
7.6 km
6.3
16.0 km
6.4
191 km SE of Lorengau, Papua New Guinea
2026-07-13 08:53:28 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
4.1
2 km ESE of Frazier Park, CA
2026-07-12 10:38:05 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
13.1 km
6.4
South Sandwich Islands region
2026-07-11 10:26:43 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
26.0 km
3.8
2 km E of Oak Harbor, Washington
2026-07-02 06:35:48 (UTC)
Pager Alert Level: Gray (Null)
MMI: III (Weak Shaking)
25.4 km
5.3
272 km SSE of Dunhuang, China
2026-06-30 23:44:55 (UTC)
Pager Alert Level: Yellow
MMI: VI (Strong Shaking)
10.0 km
4.2
27 km WNW of Hope, Alaska
2026-06-27 05:25:52 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
47.9 km
5.0
38 km SSE of Spearman, Texas
2026-07-23 10:21:44 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
5.7 km
5.5
4 km SSW of Chupaca, Peru
2026-07-19 02:24:36 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
6.4
86 km WSW of Puerto Madero, Mexico
2026-07-17 15:20:07 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
10.0 km
7.3
58 km WSW of Puerto Madero, Mexico
2026-07-17 14:48:40 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
18.6 km
6.2
32 km WSW of Sarangani, Philippines
2026-07-14 15:49:39 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
46.4 km
4.3
18 km WSW of Johannesburg, CA
2026-07-13 16:40:55 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
7.6 km
6.3
16.0 km
6.4
191 km SE of Lorengau, Papua New Guinea
2026-07-13 08:53:28 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
4.1
2 km ESE of Frazier Park, CA
2026-07-12 10:38:05 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
13.1 km
6.4
South Sandwich Islands region
2026-07-11 10:26:43 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
26.0 km
3.8
2 km E of Oak Harbor, Washington
2026-07-02 06:35:48 (UTC)
Pager Alert Level: Gray (Null)
MMI: III (Weak Shaking)
25.4 km
5.3
272 km SSE of Dunhuang, China
2026-06-30 23:44:55 (UTC)
Pager Alert Level: Yellow
MMI: VI (Strong Shaking)
10.0 km
4.2
27 km WNW of Hope, Alaska
2026-06-27 05:25:52 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
47.9 km
Earthquake Hazards Program
The USGS monitors and reports on earthquakes, assesses earthquake impacts and hazards, and conducts targeted research on the causes and effects of earthquakes. We undertake these activities as part of the larger National Earthquake Hazards Reduction Program (NEHRP), a four-agency partnership established by Congress.
Latest Earthquakes
Latest Earthquakes
Latest earthquakes map and list (past 24 hours, M2.5+) from the ANSS (Advanced National Seismic System).
Search Earthquake Catalog
Search Earthquake Catalog
Find an earthquake or a list of earthquakes by time window, magnitude, area, and more, and choose the output format - map and list, CVS, and others.
News
The Loneliest Seismometers on Earth
The Loneliest Seismometers on Earth
Updates for ShakeAlert False Alert for M5.9 Earthquake near Carson City, NV (Dec. 2025)
Updates for ShakeAlert False Alert for M5.9 Earthquake near Carson City, NV (Dec. 2025)
USGS releases aftershock forecast for M8.8 Russian Kamchatka Peninsula Earthquake
USGS releases aftershock forecast for M8.8 Russian Kamchatka Peninsula Earthquake
Publications
Velocity-independent dry friction on mica: A realization of ideal Amontons-Coulomb friction Velocity-independent dry friction on mica: A realization of ideal Amontons-Coulomb friction
The Amontons-Coulomb friction law assumes that the frictional force between materials is independent of sliding velocity. However, as Coulomb noted, this is a rough approximation, and a second-order dependence of friction on the logarithm of sliding velocity is incorporated in a commonly used ‘rate- and state-dependent’ friction representation. Here we conduct shear experiments on mica...
Site-specific amplifications in Northwestern Turkiye: A generic approach Site-specific amplifications in Northwestern Turkiye: A generic approach
In this study, we derive generic site amplification functions applicable to Northwestern Türkiye and follow guidance on site classifications established by the United States National Earthquake Hazards Reduction Program (NEHRP). We employ the one-dimensional (1-D) equivalent linear ground response analysis method and focus on recordings from a select suite of free-field strong motion (SM...
The digital archivist: Automating legacy macroseismic data processing using large language models The digital archivist: Automating legacy macroseismic data processing using large language models
Macroseismic data are a key resource to investigate shaking and damage from preinstrumental and early instrumental eras. However, data are often stored as inconsistently formatted reports describing observed shaking and damage, making manually parsing and interpreting accounts labor‐intensive. We introduce a novel workflow using Google’s Gemini 2.5 Pro large language model (LLM) to...
Science
Challenges and Advances in Stable Continental Region Paleoseismology
Thursday and Friday, September 17-18, 2026 8:30 am - 4:30 pm CDT A Hybrid Event at The University of Memphis FedEx Institute of Technology
Geologic Mapping for Landscape Resiliency in California, Oregon, and Washington
This project uses geologic and geomorphic mapping in the context of societally relevant problems in the Earth’s critical zone. Leveraging interdisciplinary research ties and interagency collaborations, it utilizes remote sensing data, corroborated with field observations, to determine i) the spatial distribution of geomorphic processes and ages of Quaternary deposits in the context of active...
By
Earthquake Hazards Program, Landslide Hazards Program, National Cooperative Geologic Mapping Program, Earthquake Science Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Pacific Coastal and Marine Science Center, Big Sur Landslides
Mapping the grid: The United States Magnetotelluric Array
The United States has been mapped from space to the ground across its surface; however never from the perspective of the planet’s own electrical heartbeat. Over nearly two decades, the United States Magnetotelluric Array quietly marched across the country, station by station, building the first-ever electrical portrait of the crust and upper mantle beneath the contiguous U.S. An ambitious, multi...
