4.7

M4.7 Earthquake southwest of AfricaNovember 22, 2024

2024-11-22 10:34:12 UTC (2024-11-22) · approx. 11:34 AM UTC+1 local

MagnitudeM4.7(mb)
Time10:34 UTC11:34 AM UTC+1
Depth10.0 kmshallow crustal
Coordinates-52.630°, 19.962°
Felt byNo felt reports
Status✓ Reviewed by USGS

On November 22, 2024 at 10:34 UTC, a magnitude 4.7 shallow crustal earthquake struck southwest of Africa, at a depth of 10.0 km and coordinates -52.6295°, 19.9616°. This earthquake was detected by 20 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -52.63°, 19.96°

Earthquake Details

Magnitude
4.7 mb
Depth
10.0 km
shallow crustal
Location
-52.6295°N
19.9616°E

Technical Information

Event ID
us7000nwlf
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Stations Used
20
Azimuthal Gap
81.0°
Min Station Distance
20.246°
RMS Residual
0.50 sec
Last Updated
2025-01-30 17:00:36 UTC

Common Questions

How strong was the magnitude 4.7 earthquake southwest of Africa?

The magnitude 4.7 earthquake that struck southwest of Africa on November 22, 2024 at 10:34 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 -52.6295°, 19.9616°, which is southwest of Africa.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000nwlf). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, November 22, 2024). M4.7 Earthquake southwest of AfricaNovember 22, 2024. Retrieved January 30, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000nwlf/