M4.0 Earthquake 137 km N of Saipan, Northern Mariana Islands — April 27, 2022
2022-04-27 23:13:36 UTC (2022-04-27) · approx. 9:13 AM UTC+10 local
On April 27, 2022 at 23:13 UTC, a magnitude 4.0 deep-focus earthquake struck 137 km N of Saipan, Northern Mariana Islands, at a depth of 519.4 km and coordinates 16.4507°, 145.7995°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
145.7995°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Saipan, Northern Mariana Islands?
The magnitude 4.0 earthquake that struck 137 km N of Saipan, Northern Mariana Islands on April 27, 2022 at 23:13 UTC had a depth of 519.4 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000h71v). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, April 27, 2022). M4.0 Earthquake 137 km N of Saipan, Northern Mariana Islands — April 27, 2022. Retrieved July 5, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000h71v/