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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
5.8
138 km NNW of Tumxuk, China
2025-12-04 07:44:07 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
3.3
4.8 km
4.0
5 km S of San Juan Bautista, CA
2025-11-27 20:57:38 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
8.2 km
6.0
12 km WNW of Susitna, Alaska
2025-11-27 17:11:29 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
69.4 km
6.6
45 km WNW of Sinabang, Indonesia
2025-11-27 04:56:27 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
25.4 km
4.0
2.9 km
4.9
10 km NW of Beluga, Alaska
2025-11-22 15:38:56 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
61.7 km
5.4
14 km SSW of Narsingdi, Bangladesh
2025-11-21 04:38:29 (UTC)
Pager Alert Level: Yellow
MMI: VI (Strong Shaking)
27.0 km
4.1
7 km W of Templeton, CA
2025-11-18 17:54:30 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
4.9 km
3.5
4 km SSW of Vallejo, CA
2025-11-13 20:41:16 (UTC)
Pager Alert Level: Gray (Null)
MMI: IV (Light Shaking)
9.0 km
6.4
117 km E of Yamada, Japan
2025-11-09 08:54:37 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
6.8
122 km E of Yamada, Japan
2025-11-09 08:03:39 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
18.0 km
5.8
138 km NNW of Tumxuk, China
2025-12-04 07:44:07 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
10.0 km
3.3
4.8 km
4.0
5 km S of San Juan Bautista, CA
2025-11-27 20:57:38 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
8.2 km
6.0
12 km WNW of Susitna, Alaska
2025-11-27 17:11:29 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
69.4 km
6.6
45 km WNW of Sinabang, Indonesia
2025-11-27 04:56:27 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
25.4 km
4.0
2.9 km
4.9
10 km NW of Beluga, Alaska
2025-11-22 15:38:56 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
61.7 km
5.4
14 km SSW of Narsingdi, Bangladesh
2025-11-21 04:38:29 (UTC)
Pager Alert Level: Yellow
MMI: VI (Strong Shaking)
27.0 km
4.1
7 km W of Templeton, CA
2025-11-18 17:54:30 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
4.9 km
3.5
4 km SSW of Vallejo, CA
2025-11-13 20:41:16 (UTC)
Pager Alert Level: Gray (Null)
MMI: IV (Light Shaking)
9.0 km
6.4
117 km E of Yamada, Japan
2025-11-09 08:54:37 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
10.0 km
6.8
122 km E of Yamada, Japan
2025-11-09 08:03:39 (UTC)
Pager Alert Level: Green
MMI: V (Moderate Shaking)
18.0 km
Earthquake Hazards Program
On December 4, 2025, at 8:06am PT, the ShakeAlert earthquake early warning system was activated for a magnitude 5.9 earthquake near Reno and Carson City, Nevada. The event did not occur and has been deleted from USGS websites and data feeds. USGS and our partners are currently looking into why the warning was issued to a broad region of California, including the Bay Area, the Eastern Sierra, and parts of South-Central California.
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
USGS releases aftershock forecast for M8.8 Russian Kamchatka Peninsula Earthquake
USGS releases aftershock forecast for M8.8 Russian Kamchatka Peninsula Earthquake
USGS Geologic Mapping Project Supports Critical Mineral Exploration, Enhances Public Safety in the Southeast
USGS Geologic Mapping Project Supports Critical Mineral Exploration, Enhances Public Safety in the Southeast
USGS Announces Recipients of Recent Earthquake Research Grants and Cooperative Agreements
USGS Announces Recipients of Recent Earthquake Research Grants and Cooperative Agreements
Publications
Long‐period ground motions from dynamic rupture simulations of large earthquakes on the creeping Hayward–Calaveras–Rodgers Creek fault system Long‐period ground motions from dynamic rupture simulations of large earthquakes on the creeping Hayward–Calaveras–Rodgers Creek fault system
he Hayward, Calaveras, and Rodgers Creek faults in the San Francisco Bay region of California have a high probability of producing a large earthquake in the next decades. Although these faults creep, the creep is insufficient to keep up with their relatively rapid slip rates on their deepest sections, so they have been storing tectonic strain since their last large earthquakes, with the...
Fiber-optic sensing for earthquake hazards research, monitoring and early warning Fiber-optic sensing for earthquake hazards research, monitoring and early warning
The use of fiber‐optic sensing systems in seismology has exploded in the past decade. Despite an ever‐growing library of ground‐breaking studies, questions remain about the potential of fiber‐optic sensing technologies as tools for advancing if not revolutionizing earthquake‐hazards‐related research, monitoring, and early warning systems. A working group convened to explore these topics...
Ultralong, supershear rupture of the 2025 Mw 7.7 Mandalay earthquake reveals unaccounted risk Ultralong, supershear rupture of the 2025 Mw 7.7 Mandalay earthquake reveals unaccounted risk
The 28 March 2025 moment magnitude (Mw) 7.7 earthquake in Mandalay, Burma (Myanmar), ruptured 475 kilometers of the Sagaing Fault, which was more than twice the length predicted by magnitude scaling relationships. Kinematic slip models and observation of a Rayleigh Mach wave that passed through parts of Thailand confirmed that rupture occurred at supershear velocities of greater than 5...
Science
Earthquake Sequence Product
The USGS earthquake sequence product is a tool that identifies and describes earthquakes that are clustered in space and time as “sequences.” Its overarching goal is to provide simple contextual information regarding the spatial and temporal interconnection of earthquakes. The sequence product provides a description of a sequence, including information on the number and size of aftershocks, as...
Engineering and Risk
The well-known statement "Earthquakes don't kill people, buildings do" highlights the need to make our communities more earthquake resilient. The impact of earthquakes on public safety and the national economy can be reduced through improvement of the built environment to resist earthquake effects such as ground shaking. Extending natural hazards science to risk involves (1) conducting research to...
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.
