M4.7 Earthquake in the Pagan region, Northern Mariana Islands — September 30, 2021
2021-09-30 02:08:12 UTC (2021-09-30) · approx. 12:08 PM UTC+10 local
On September 30, 2021 at 02:08 UTC, a magnitude 4.7 intermediate depth earthquake struck in the Pagan region, Northern Mariana Islands, at a depth of 119.8 km and coordinates 18.4538°, 145.8755°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
145.8755°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake in the Pagan region, Northern Mariana Islands?
The magnitude 4.7 earthquake that struck in the Pagan region, Northern Mariana Islands on September 30, 2021 at 02:08 UTC had a depth of 119.8 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 18.4538°, 145.8755°, which is in the Pagan region, Northern Mariana Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000fqc6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 30, 2021). M4.7 Earthquake in the Pagan region, Northern Mariana Islands — September 30, 2021. Retrieved December 4, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fqc6/