4.1

M4.1 Earthquake 112 km WNW of Mohr, IranDecember 16, 2025

2025-12-16 23:55:50 UTC (2025-12-16) · approx. 2:55 AM UTC+3 local

MagnitudeM4.1(mb)
Time23:55 UTC2:55 AM UTC+3
Depth10.0 kmshallow crustal
Coordinates27.913°, 51.821°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 16, 2025 at 23:55 UTC, a magnitude 4.1 shallow crustal earthquake struck 112 km WNW of Mohr, Iran, at a depth of 10.0 km and coordinates 27.9134°, 51.8213°.

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 27.91°, 51.82°

Earthquake Details

Magnitude
4.1 mb
Depth
10.0 km
shallow crustal
Location
27.9134°N
51.8213°E

Technical Information

Event ID
us7000rnpl
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
14
Azimuthal Gap
175.0°
Min Station Distance
4.917°
RMS Residual
0.65 sec
Last Updated
2026-03-10 22:18:50 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Mohr, Iran?

The magnitude 4.1 earthquake that struck 112 km WNW of Mohr, Iran on December 16, 2025 at 23:55 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 4.1 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.

Authoritative source: USGS event page (event ID: us7000rnpl). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, December 16, 2025). M4.1 Earthquake 112 km WNW of Mohr, IranDecember 16, 2025. Retrieved May 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000rnpl/