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Significant Earthquakes, Past 30 days
Significant Earthquakes, Past 30 days
6.0
13 km SSW of Hualien City, Taiwan
2024-04-22 18:32:49 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
10.0 km
6.1
28 km S of Hualien City, Taiwan
2024-04-22 18:26:53 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
10.7 km
4.3
3.2 km
6.3
17 km WSW of Uwajima, Japan
2024-04-17 14:14:46 (UTC)
Pager Alert Level: Orange
MMI: VIII (Severe Shaking)
25.7 km
6.5
110 km ESE of Kimbe, Papua New Guinea
2024-04-14 20:56:28 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
49.0 km
5.4
40 km NW of Kuqa, China
2024-04-10 14:56:17 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
6.5 km
6.4
149 km NW of Tobelo, Indonesia
2024-04-09 09:48:02 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
35.0 km
3.7
7 km WSW of Gladstone, New Jersey
2024-04-05 21:59:13 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
4.1 km
4.8
2024 Tewksbury, New Jersey Earthquake
2024-04-05 14:23:20 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
2.6 km
6.8
Maug Islands region, Northern Mariana Islands
2024-04-05 11:03:16 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
222.0 km
4.4
7.8 km
6.4
15 km NNE of Hualien City, Taiwan
2024-04-03 00:11:25 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
13.9 km
7.4
16 km S of Hualien City, Taiwan
2024-04-02 23:58:12 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
40.0 km
6.0
13 km SSW of Hualien City, Taiwan
2024-04-22 18:32:49 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
10.0 km
6.1
28 km S of Hualien City, Taiwan
2024-04-22 18:26:53 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
10.7 km
4.3
3.2 km
6.3
17 km WSW of Uwajima, Japan
2024-04-17 14:14:46 (UTC)
Pager Alert Level: Orange
MMI: VIII (Severe Shaking)
25.7 km
6.5
110 km ESE of Kimbe, Papua New Guinea
2024-04-14 20:56:28 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
49.0 km
5.4
40 km NW of Kuqa, China
2024-04-10 14:56:17 (UTC)
Pager Alert Level: Yellow
MMI: VII (Very Strong Shaking)
6.5 km
6.4
149 km NW of Tobelo, Indonesia
2024-04-09 09:48:02 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
35.0 km
3.7
7 km WSW of Gladstone, New Jersey
2024-04-05 21:59:13 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
4.1 km
4.8
2024 Tewksbury, New Jersey Earthquake
2024-04-05 14:23:20 (UTC)
Pager Alert Level: Green
MMI: VI (Strong Shaking)
2.6 km
6.8
Maug Islands region, Northern Mariana Islands
2024-04-05 11:03:16 (UTC)
Pager Alert Level: Green
MMI: IV (Light Shaking)
222.0 km
4.4
7.8 km
6.4
15 km NNE of Hualien City, Taiwan
2024-04-03 00:11:25 (UTC)
Pager Alert Level: Green
MMI: VII (Very Strong Shaking)
13.9 km
7.4
16 km S of Hualien City, Taiwan
2024-04-02 23:58:12 (UTC)
Pager Alert Level: Yellow
MMI: VIII (Severe Shaking)
40.0 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.
News
USGS deploys “aftershock kits” to study Whitehouse Station earthquakes
USGS deploys “aftershock kits” to study Whitehouse Station earthquakes
USGS Seeks Earthquake Hazards Research Proposals
USGS Seeks Earthquake Hazards Research Proposals
Earthquakes can strike faster than a New York minute – What to do when the ground shakes...
Earthquakes can strike faster than a New York minute – What to do when the ground shakes...
Publications
Evaluation of 2-D shear-wave velocity models and VS30at six strong-motion recording stations in southern California using multichannel analysis of surface waves and refraction tomography
To better understand the potential for amplified ground shaking at sites that house critical infrastructure, the U.S. Geological Survey (USGS) evaluated shear-wave velocities (VS) at six strong-motion recording stations in Southern California Edison facilities in southern California. We calculated VS30 (time-averaged shear-wave velocity in the upper 30 meters [m]), which is a parameter used in gro
Preliminary implications of viscoelastic ray theory for anelastic seismic tomography models
The recent developments in general viscoelastic ray theory provide a rigorous mathematical framework for anelastic seismic tomography. They provide closed‐form solutions of forward ray‐tracing and simple inverse problems for anelastic horizontal and spherical layered media with material gradients. They provide ray‐tracing computation algorithms valid for all angles of incidence that account for ch
Performance-based earthquake early warning for tall buildings
The ShakeAlert Earthquake Early Warning (EEW) system aims to issue an advance warning to residents on the West Coast of the United States seconds before the ground shaking arrives, if the expected ground shaking exceeds a certain threshold. However, residents in tall buildings may experience much greater motion due to the dynamic response of the buildings. Therefore, there is an ongoing effort to