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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
4.6
1 km SE of Boulder Creek, CA
2026-04-02 08:41:26 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
10.4 km
7.4
126 km WNW of Ternate, Indonesia
2026-04-01 22:48:13 (UTC)
Pager Alert Level: Green
MMI: VIII (Severe Shaking)
35.0 km
7.3
48 km ENE of Luganville, Vanuatu
2026-03-30 08:44:14 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
121.3 km
6.5
122 km E of Yamada, Japan
2026-03-26 14:18:51 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
9.5 km
7.5
166 km W of Neiafu, Tonga
2026-03-24 04:37:51 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
229.5 km
6.3
144 km NE of Hihifo, Tonga
2026-03-22 15:30:37 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
6.6
10.0 km
6.6
4.9 km
6.3
85 km W of Vallenar, Chile
2026-03-13 13:39:19 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
10.0 km
5.5
1 km NW of Rodotópi, Greece
2026-03-08 03:32:31 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
4.9
2026 Red River Parish, Louisiana Earthquake
2026-03-05 11:30:08 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
2.5 km
6.4
223 km ESE of Attu Station, Alaska
2026-03-04 17:54:37 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
10.0 km
4.6
1 km SE of Boulder Creek, CA
2026-04-02 08:41:26 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
10.4 km
7.4
126 km WNW of Ternate, Indonesia
2026-04-01 22:48:13 (UTC)
Pager Alert Level: Green
MMI: VIII (Severe Shaking)
35.0 km
7.3
48 km ENE of Luganville, Vanuatu
2026-03-30 08:44:14 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
121.3 km
6.5
122 km E of Yamada, Japan
2026-03-26 14:18:51 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
9.5 km
7.5
166 km W of Neiafu, Tonga
2026-03-24 04:37:51 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
229.5 km
6.3
144 km NE of Hihifo, Tonga
2026-03-22 15:30:37 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
6.6
10.0 km
6.6
4.9 km
6.3
85 km W of Vallenar, Chile
2026-03-13 13:39:19 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
10.0 km
5.5
1 km NW of Rodotópi, Greece
2026-03-08 03:32:31 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
4.9
2026 Red River Parish, Louisiana Earthquake
2026-03-05 11:30:08 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
2.5 km
6.4
223 km ESE of Attu Station, Alaska
2026-03-04 17:54:37 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
10.0 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
Constraining source and path effects of large magnitude earthquakes using ground motion simulations Constraining source and path effects of large magnitude earthquakes using ground motion simulations
The purpose of this study is to use ground‐motion simulations to investigate ways in which source and path effects for large‐magnitude earthquakes can be represented in nonergodic ground‐motion models (GMMs). To achieve this, we designed a ground‐motion study in the San Francisco Bay Area that includes earthquakes with a broad range of magnitudes distributed uniformly on a fault plane...
Site response models based on geometric parameters for southern California sedimentary basins Site response models based on geometric parameters for southern California sedimentary basins
Site response in sedimentary basins is influenced by complex three-dimensional (3D) features, including trapping of seismic waves, focusing of seismic energy and basin resonance. Current ground motion models (GMMs) incorporate basin effects using one-dimensional parameters like VS30 and shear wave velocity isosurface depths, which are limited in capturing lateral and 3D effects. To...
Science
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
2025 PRVI NSHM Rollout & User-Needs Meeting
In conjunction with publication of the 2025 Puerto Rico and U.S. Virgin Islands (PRVI) National Seismic Hazard Model (NSHM), the USGS National Seismic Hazard Model Project (NSHMP) will host a one-day public meeting in San Juan, Puerto Rico. Additional meeting information, including a link to the registration form, is provided below.
2027 NSHMs for GNMI and AmSam
The Guam and the Commonwealth of the Northern Mariana Islands (GNMI) and American Samoa (AmSam) models were last updated in 2012. The two NSHMs will be developed concurrently but will be published separately.
