M4.2 Earthquake 37 km S of San Jose Village, Northern Mariana Islands — August 22, 2024
2024-08-22 20:53:39 UTC (2024-08-22) · approx. 6:53 AM UTC+10 local
On August 22, 2024 at 20:53 UTC, a magnitude 4.2 intermediate depth earthquake struck 37 km S of San Jose Village, Northern Mariana Islands, at a depth of 107.2 km and coordinates 14.6373°, 145.6718°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 25 days ago 80 km SSW of San Jose Village, Northern Mariana Islands. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
145.6718°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near San Jose Village, Northern Mariana Islands?
The magnitude 4.2 earthquake that struck 37 km S of San Jose Village, Northern Mariana Islands on August 22, 2024 at 20:53 UTC had a depth of 107.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.1 one earlier?
No. This magnitude 4.2 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier 80 km SSW of San Jose Village, Northern Mariana Islands. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000ndl6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, August 22, 2024). M4.2 Earthquake 37 km S of San Jose Village, Northern Mariana Islands — August 22, 2024. Retrieved November 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000ndl6/