M4.2 Earthquake in the Maug Islands region, Northern Mariana Islands — July 18, 2026
2026-07-18 00:36:58 UTC (2026-07-18) · approx. 10:36 AM UTC+10 local
On July 18, 2026 at 00:36 UTC, a magnitude 4.2 intermediate depth earthquake struck in the Maug Islands region, Northern Mariana Islands, at a depth of 132.3 km and coordinates 19.0320°, 145.6545°.
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
145.6545°E
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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 July 18, 2026 at 00:36 UTC had a depth of 132.3 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.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000t2xr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 18, 2026). M4.2 Earthquake in the Maug Islands region, Northern Mariana Islands — July 18, 2026. Retrieved August 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t2xr/