M4.5 Earthquake in the Mariana Islands region — April 30, 2022
2022-04-30 23:07:19 UTC (2022-04-30) · approx. 8:07 AM UTC+9 local
On April 30, 2022 at 23:07 UTC, a magnitude 4.5 intermediate depth earthquake struck in the Mariana Islands region, at a depth of 101.4 km and coordinates 12.3686°, 141.8519°. This earthquake was detected by 23 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
141.8519°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake in the Mariana Islands region?
The magnitude 4.5 earthquake that struck in the Mariana Islands region on April 30, 2022 at 23:07 UTC had a depth of 101.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 12.3686°, 141.8519°, which is in the Mariana Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000h7kb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, April 30, 2022). M4.5 Earthquake in the Mariana Islands region — April 30, 2022. Retrieved July 9, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000h7kb/