M4.7 Earthquake 135 km NNW of Saipan, Northern Mariana Islands — July 14, 2022
2022-07-14 22:04:33 UTC (2022-07-14) · approx. 8:04 AM UTC+10 local
On July 14, 2022 at 22:04 UTC, a magnitude 4.7 shallow crustal earthquake struck 135 km NNW of Saipan, Northern Mariana Islands, at a depth of 10.0 km and coordinates 16.2674°, 145.1203°. This earthquake was detected by 39 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
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
145.1203°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake near Saipan, Northern Mariana Islands?
The magnitude 4.7 earthquake that struck 135 km NNW of Saipan, Northern Mariana Islands on July 14, 2022 at 22:04 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 16.2674°, 145.1203°, which is 135 km NNW of Saipan, 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: us7000hspx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 14, 2022). M4.7 Earthquake 135 km NNW of Saipan, Northern Mariana Islands — July 14, 2022. Retrieved September 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000hspx/