M4.3 Earthquake in the Maug Islands region, Northern Mariana Islands — April 4, 2023
2023-04-04 20:12:01 UTC (2023-04-04) · approx. 6:12 AM UTC+10 local
On April 4, 2023 at 20:12 UTC, a magnitude 4.3 shallow crustal earthquake struck in the Maug Islands region, Northern Mariana Islands, at a depth of 69.5 km and coordinates 20.0931°, 145.8796°.
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
145.8796°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake in the Maug Islands region, Northern Mariana Islands?
The magnitude 4.3 earthquake that struck in the Maug Islands region, Northern Mariana Islands on April 4, 2023 at 20:12 UTC had a depth of 69.5 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.
Actions
Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000k3j8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 4, 2023). M4.3 Earthquake in the Maug Islands region, Northern Mariana Islands — April 4, 2023. Retrieved June 13, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k3j8/