M4.6 Earthquake in the Mariana Islands region — February 19, 2024
2024-02-19 19:21:47 UTC (2024-02-19) · approx. 5:21 AM UTC+10 local
On February 19, 2024 at 19:21 UTC, a magnitude 4.6 intermediate depth earthquake struck in the Mariana Islands region, at a depth of 133.9 km and coordinates 21.6979°, 144.3932°. This earthquake was detected by 82 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
144.3932°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake in the Mariana Islands region?
The magnitude 4.6 earthquake that struck in the Mariana Islands region on February 19, 2024 at 19:21 UTC had a depth of 133.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 21.6979°, 144.3932°, which is in the Mariana Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000m08f). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, February 19, 2024). M4.6 Earthquake in the Mariana Islands region — February 19, 2024. Retrieved May 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000m08f/