4.9

M4.9 Earthquake near eastern Greenland — September 26, 2025

2025-09-26 11:52:44 UTC (2025-09-26) · approx. 10:52 AM UTC-1 local

MagnitudeM4.9(mb)
Time11:52 UTC≈ 10:52 AM UTC-1
Depth10.0 kmshallow crustal
Coordinates79.472°, -17.497°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 26, 2025 at 11:52 UTC, a magnitude 4.9 shallow crustal earthquake struck near eastern Greenland, at a depth of 10.0 km and coordinates 79.4721°, -17.4967°. This earthquake was detected by 99 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 79.47°, -17.50°

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
79.4721°N
-17.4967°E

Technical Information

Event ID
us6000rd4a
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Stations Used
99
Azimuthal Gap
34.0°
Min Station Distance
2.150°
RMS Residual
0.80 sec
Last Updated
2025-12-11 21:40:42 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near eastern Greenland?

The magnitude 4.9 earthquake that struck near eastern Greenland on September 26, 2025 at 11:52 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 79.4721°, -17.4967°, which is near eastern Greenland.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 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

View on USGSDid You Feel It?

Be Prepared

→ What to do during an earthquake→ Create an emergency plan→ Emergency kit essentials→ See all M4.5+ earthquakes today

Authoritative source: USGS event page (event ID: us6000rd4a). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, September 26, 2025). M4.9 Earthquake near eastern Greenland — September 26, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rd4a/