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
6.4
10.0 km
6.5
492.4 km
6.3
170 km NW of Port-Olry, Vanuatu
2026-10-24 02:35:57 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
6.9
197 km WNW of Port-Olry, Vanuatu
2026-10-24 02:31:29 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
10.0 km
7.0
189 km ENE of Nagqu, China
2026-10-22 14:33:40 (UTC)
Pager Alert Level: Orange
MMI: IX (Violent Shaking)
18.0 km
6.3
197 km NW of Port-Olry, Vanuatu
2026-10-20 04:20:39 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
16.0 km
5.7
48 km WNW of Khuzdar, Pakistan
2026-10-17 05:06:58 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
6.9
76 km NE of Ozernovskiy, Russia
2026-10-16 03:35:32 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
135.0 km
6.8
10.0 km
6.7
10.0 km
6.1
15 km W of Río Grande, Panama
2026-10-12 23:20:36 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
11.0 km
6.0
4 km NNE of La Tronosa, Panama
2026-10-10 04:14:02 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
10.0 km
6.6
13 km WSW of Río Grande, Panama
2026-10-09 20:25:38 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
10.0 km
5.8
4 km W of Flores, Panama
2026-10-09 18:37:46 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
6.4
10.0 km
6.5
492.4 km
6.3
170 km NW of Port-Olry, Vanuatu
2026-10-24 02:35:57 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
6.9
197 km WNW of Port-Olry, Vanuatu
2026-10-24 02:31:29 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
10.0 km
7.0
189 km ENE of Nagqu, China
2026-10-22 14:33:40 (UTC)
Pager Alert Level: Orange
MMI: IX (Violent Shaking)
18.0 km
6.3
197 km NW of Port-Olry, Vanuatu
2026-10-20 04:20:39 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
16.0 km
5.7
48 km WNW of Khuzdar, Pakistan
2026-10-17 05:06:58 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
6.9
76 km NE of Ozernovskiy, Russia
2026-10-16 03:35:32 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
135.0 km
6.8
10.0 km
6.7
10.0 km
6.1
15 km W of Río Grande, Panama
2026-10-12 23:20:36 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
11.0 km
6.0
4 km NNE of La Tronosa, Panama
2026-10-10 04:14:02 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
10.0 km
6.6
13 km WSW of Río Grande, Panama
2026-10-09 20:25:38 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
10.0 km
5.8
4 km W of Flores, Panama
2026-10-09 18:37:46 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very 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
A new amphibious earthquake catalog for the Alaska Peninsula: Training, testing, and applying machine learning earthquake picking in offshore and amphibious environments A new amphibious earthquake catalog for the Alaska Peninsula: Training, testing, and applying machine learning earthquake picking in offshore and amphibious environments
The dual seismological developments of large-scale offshore observational networks and high-quality machine-learning earthquake detection and picking allow unprecedented seismicity detection in high hazard subduction zones. We develop a high resolution machine learning enhanced seismicity catalog for the Alaska Peninsula stretch of the Alaska-Aleutian Subduction Zone, which was...
3D broadband ground motion simulations of Cascadia megathrust earthquakes: Full-margin scenarios incorporating variable magnitudes and frontal thrust splay faulting 3D broadband ground motion simulations of Cascadia megathrust earthquakes: Full-margin scenarios incorporating variable magnitudes and frontal thrust splay faulting
Great megathrust earthquakes (∼Mw 8–9) that rupture along the Cascadia Subduction Zone pose significant shaking and tsunami hazards to the U.S. Pacific Northwest. Although these large earthquakes are documented in the geologic record, none have been recorded with modern instrumentation, complicating regional seismic hazard assessments. To improve constraints on seismic hazard estimates...
ETAS-positive: Extracting unbiased epidemic-type aftershock models from incomplete earthquake catalogs ETAS-positive: Extracting unbiased epidemic-type aftershock models from incomplete earthquake catalogs
Earthquake catalogs are inherently incomplete, and short-term fluctuations in catalog completeness can strongly bias estimates of seismicity parameters. Here, we extend the positive statistics framework recently introduced for estimating Gutenberg–Richter a and b values to the Epidemic-Type Aftershock Sequence (ETAS) model. The approach focuses on complete magnitude–time intervals...
Science
2027 Long-term National Seismic Hazard Models for the U.S. Territories of Guam, Commonwealth of the Northern Mariana Islands, and American Samoa
The U.S. Geological Survey will publish an updated National Seismic Hazard Model for the Pacific territories of Guam, Commonwealth of the Northern Mariana Islands, and American Samoa in 2027. These models were last updated in 2012.
NSHM29 Western U.S. Earthquake Geology Development
Thursday, November 19, 2026 2:00 pm MST A Virtual Meeting
Alaska Earthquake and Tsunami Hazards
Alaska has more large earthquakes than the rest of the United States combined. More than three-quarters of the state’s population live in an area that can experience a magnitude 7 earthquake. Our research provides objective science that helps stakeholders prepare for and mitigate the effects of future earthquakes and tsunamis, which bolsters the economic health and well-being of Alaska and the...
