M4.8 Earthquake 238 km N of Saipan, Northern Mariana Islands — November 22, 2021
2021-11-22 15:12:05 UTC (2021-11-22) · approx. 1:12 AM UTC+10 local
On November 22, 2021 at 15:12 UTC, a magnitude 4.8 intermediate depth earthquake struck 238 km N of Saipan, Northern Mariana Islands, at a depth of 206.9 km and coordinates 17.3650°, 145.7645°.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
145.7645°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Saipan, Northern Mariana Islands?
The magnitude 4.8 earthquake that struck 238 km N of Saipan, Northern Mariana Islands on November 22, 2021 at 15:12 UTC had a depth of 206.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 17.3650°, 145.7645°, which is 238 km N of Saipan, Northern Mariana Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000fw7h). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 22, 2021). M4.8 Earthquake 238 km N of Saipan, Northern Mariana Islands — November 22, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fw7h/