4.9

M4.9 Earthquake north of Ascension Island — November 7, 2025

2025-11-07 14:02:39 UTC (2025-11-07) · approx. 1:02 PM UTC-1 local

MagnitudeM4.9(mb)
Time14:02 UTC≈ 1:02 PM UTC-1
Depth10.0 kmshallow crustal
Coordinates-1.046°, -13.017°
Felt byNo felt reports
Status✓ Reviewed by USGS

On November 7, 2025 at 14:02 UTC, a magnitude 4.9 shallow crustal earthquake struck north of Ascension Island, at a depth of 10.0 km and coordinates -1.0460°, -13.0171°. This earthquake was detected by 28 seismic stations with good 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 -1.05°, -13.02°

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
-1.0460°N
-13.0171°E

Technical Information

Event ID
us6000rm3c
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Stations Used
28
Azimuthal Gap
96.0°
Min Station Distance
11.184°
RMS Residual
1.21 sec
Last Updated
2026-01-29 22:05:32 UTC

Common Questions

How strong was the magnitude 4.9 earthquake north of Ascension Island?

The magnitude 4.9 earthquake that struck north of Ascension Island on November 7, 2025 at 14:02 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 -1.0460°, -13.0171°, which is north of Ascension Island.

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: us6000rm3c). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, November 7, 2025). M4.9 Earthquake north of Ascension Island — November 7, 2025. Retrieved May 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rm3c/