M4.2 Earthquake in the Maug Islands region, Northern Mariana Islands — February 9, 2026
2026-02-09 19:18:33 UTC (2026-02-09) · approx. 5:18 AM UTC+10 local
On February 9, 2026 at 19:18 UTC, a magnitude 4.2 shallow crustal earthquake struck in the Maug Islands region, Northern Mariana Islands, at a depth of 10.0 km and coordinates 19.6607°, 144.9341°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
144.9341°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake in the Maug Islands region, Northern Mariana Islands?
The magnitude 4.2 earthquake that struck in the Maug Islands region, Northern Mariana Islands on February 9, 2026 at 19:18 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Actions
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000s00x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, February 9, 2026). M4.2 Earthquake in the Maug Islands region, Northern Mariana Islands — February 9, 2026. Retrieved May 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s00x/