4.2

M4.2 Earthquake 25 km WSW of Ashkāsham, AfghanistanFebruary 8, 2026

2026-02-08 19:41:09 UTC (2026-02-08) · approx. 12:41 AM UTC+5 local

MagnitudeM4.2(mb)
Time19:41 UTC12:41 AM UTC+5
Depth102.0 kmintermediate depth
Coordinates36.588°, 71.270°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 8, 2026 at 19:41 UTC, a magnitude 4.2 intermediate depth earthquake struck 25 km WSW of Ashkāsham, Afghanistan, at a depth of 102.0 km and coordinates 36.5880°, 71.2699°.

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.

This earthquake is part of an ongoing aftershock sequence following the magnitude 5.4 mainshock that occurred 25 days ago 38 km S of Jurm, Afghanistan. Since the mainshock, the USGS has recorded 2 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.

Map showing earthquake epicenter at 36.59°, 71.27°

Earthquake Details

Magnitude
4.2 mb
Depth
102.0 km
intermediate depth
Location
36.5880°N
71.2699°E

Technical Information

Event ID
us6000s7bt
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
32
Azimuthal Gap
98.0°
Min Station Distance
1.975°
RMS Residual
0.80 sec
Last Updated
2026-05-01 14:35:46 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Ashkāsham, Afghanistan?

The magnitude 4.2 earthquake that struck 25 km WSW of Ashkāsham, Afghanistan on February 8, 2026 at 19:41 UTC had a depth of 102.0 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.

Is this the same earthquake as the M5.4 one earlier?

No. This magnitude 4.2 earthquake is an aftershock of the larger magnitude 5.4 mainshock that occurred earlier 38 km S of Jurm, Afghanistan. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.

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: us6000s7bt). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, February 8, 2026). M4.2 Earthquake 25 km WSW of Ashkāsham, AfghanistanFebruary 8, 2026. Retrieved May 13, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000s7bt/