M4.3 Earthquake in the Alamagan region, Northern Mariana Islands — April 2, 2024
2024-04-02 16:49:01 UTC (2024-04-02) · approx. 2:49 AM UTC+10 local
On April 2, 2024 at 16:49 UTC, a magnitude 4.3 shallow crustal earthquake struck in the Alamagan region, Northern Mariana Islands, at a depth of 45.4 km and coordinates 17.9880°, 146.8447°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
146.8447°E
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Common Questions
How strong was the magnitude 4.3 earthquake in the Alamagan region, Northern Mariana Islands?
The magnitude 4.3 earthquake that struck in the Alamagan region, Northern Mariana Islands on April 2, 2024 at 16:49 UTC had a depth of 45.4 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000mb0m). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, April 2, 2024). M4.3 Earthquake in the Alamagan region, Northern Mariana Islands — April 2, 2024. Retrieved June 12, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000mb0m/