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online search by time window, area, magnitude, and more
online search by time window, area, magnitude, and more
Machine Learning Mapping in the Sierra Nevada Mountains
A new study mapping the bedrock outcrops in California
A new study mapping the bedrock outcrops in California
Significant Earthquakes, Past 30 days
Significant Earthquakes, Past 30 days
6.2
61 km NNE of Eloúnda, Greece
2025-05-22 03:19:35 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
64.0 km
6.5
88 km ENE of Angoram, Papua New Guinea
2025-05-20 15:05:58 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
10.0 km
6.4
137 km W of Neiafu, Tonga
2025-05-14 04:15:38 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
243.1 km
6.0
21 km SSE of Fry, Greece
2025-05-13 22:51:16 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
74.0 km
5.5
125 km W of Rikaze, China
2025-05-11 21:11:22 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
9.0 km
4.1
21 km SE of Greenback, Tennessee
2025-05-10 13:04:20 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
25.4 km
3.0
8.0 km
5.6
20.0 km
5.4
59 km S of Whites City, New Mexico
2025-05-04 01:47:06 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
7.5 km
6.4
288 km SSE of Ushuaia, Argentina
2025-05-02 17:59:08 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
8.0 km
7.4
2025 Drake Passage Earthquake
2025-05-02 12:58:26 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
10.0 km
3.9
4 km WNW of Independence, Utah
2025-05-01 06:11:19 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
13.8 km
6.2
61 km NNE of Eloúnda, Greece
2025-05-22 03:19:35 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
64.0 km
6.5
88 km ENE of Angoram, Papua New Guinea
2025-05-20 15:05:58 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
10.0 km
6.4
137 km W of Neiafu, Tonga
2025-05-14 04:15:38 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
243.1 km
6.0
21 km SSE of Fry, Greece
2025-05-13 22:51:16 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
74.0 km
5.5
125 km W of Rikaze, China
2025-05-11 21:11:22 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
9.0 km
4.1
21 km SE of Greenback, Tennessee
2025-05-10 13:04:20 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
25.4 km
3.0
8.0 km
5.6
20.0 km
5.4
59 km S of Whites City, New Mexico
2025-05-04 01:47:06 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
7.5 km
6.4
288 km SSE of Ushuaia, Argentina
2025-05-02 17:59:08 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
8.0 km
7.4
2025 Drake Passage Earthquake
2025-05-02 12:58:26 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
10.0 km
3.9
4 km WNW of Independence, Utah
2025-05-01 06:11:19 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
13.8 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
Publications
Bayesian ETAS modeling for the Pacific Northwest: Uncovering effects of tectonic regimes, regional differences, and swarms on aftershock parameters Bayesian ETAS modeling for the Pacific Northwest: Uncovering effects of tectonic regimes, regional differences, and swarms on aftershock parameters
The Pacific Northwest (PNW) of North America has high seismic hazard due to numerous earthquake sources under populated areas. It hosts several tectonic regimes and subregional seismic zones that are hypothesized to have different patterns of earthquake and aftershock occurrence. It is also predisposed to earthquake swarms, which can complicate the statistical modeling of these patterns...
Dendroseismological investigation of redwood trees along the North Coast section of the San Andreas Fault Dendroseismological investigation of redwood trees along the North Coast section of the San Andreas Fault
Sequoia sempervirens (coast redwood) tree rings have the potential to annually resolve late-Holocene earthquakes on the northern San Andreas Fault based on direct (e.g., physical damage) and indirect (e.g., co-seismic environmental change) impacts, but scarcity of suitable samples and challenges crossdating this long-lived species have limited progress. More precise dating of the pre...
Overview of The SCEC/USGS Community Stress Drop Validation Study using the 2019 Ridgecrest earthquake sequence Overview of The SCEC/USGS Community Stress Drop Validation Study using the 2019 Ridgecrest earthquake sequence
We present initial findings from the ongoing Community Stress Drop Validation Study to compare spectral stress‐drop estimates for earthquakes in the 2019 Ridgecrest, California, sequence. This study uses a unified dataset to independently estimate earthquake source parameters through various methods. Stress drop, which denotes the change in average shear stress along a fault during...
Science
2025 Puerto Rico and U.S. Virgin Islands Long-term National Seismic Hazard Model
We anticipate the final 2025 PRVI NSHM to be available by December 21st 2025.
Public kickoff webinar: 2026 National Seismic Hazard Models for Guam & Northern Mariana Islands and American Samoa
Monday, February 24, 2025 2:00-4:00 pm MST A Virtual Meeting
M 6.9 October 17, 1989 Loma Prieta Earthquake
The 1989 Loma Prieta earthquake ended decades of tranquility in the San Francisco Bay region. It was a wakeup call to prepare for the potentially even more devastating shocks that are inevitable in the future. Since 1989, the work of the U.S. Geological Survey and other organizations has improved understanding of the seismic threat in the Bay region, promoted awareness of earthquake hazards, and...
