4.1

M4.1 Earthquake in the Pagan region, Northern Mariana IslandsJune 14, 2025

2025-06-14 22:59:03 UTC (2025-06-14) · approx. 8:59 AM UTC+10 local

MagnitudeM4.1(mb)
Time22:59 UTC8:59 AM UTC+10
Depth171.1 kmintermediate depth
Coordinates18.231°, 146.141°
Felt byNo felt reports
Status✓ Reviewed by USGS

On June 14, 2025 at 22:59 UTC, a magnitude 4.1 intermediate depth earthquake struck in the Pagan region, Northern Mariana Islands, at a depth of 171.1 km and coordinates 18.2311°, 146.1409°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.23°, 146.14°

Earthquake Details

Magnitude
4.1 mb
Depth
171.1 km
intermediate depth
Location
18.2311°N
146.1409°E

Technical Information

Event ID
us7000q94t
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
18
Azimuthal Gap
122.0°
Min Station Distance
2.993°
RMS Residual
1.18 sec
Last Updated
2025-08-22 20:26:05 UTC

Common Questions

How strong was the magnitude 4.1 earthquake in the Pagan region, Northern Mariana Islands?

The magnitude 4.1 earthquake that struck in the Pagan region, Northern Mariana Islands on June 14, 2025 at 22:59 UTC had a depth of 171.1 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000q94t). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, June 14, 2025). M4.1 Earthquake in the Pagan region, Northern Mariana IslandsJune 14, 2025. Retrieved August 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000q94t/