4.6

M4.6 Earthquake 36 km N of Adi Keyh, EritreaAugust 3, 2023

2023-08-03 23:15:39 UTC (2023-08-03) · approx. 2:15 AM UTC+3 local

MagnitudeM4.6(mb)
Time23:15 UTC2:15 AM UTC+3
Depth10.0 kmshallow crustal
Coordinates15.175°, 39.395°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 3, 2023 at 23:15 UTC, a magnitude 4.6 shallow crustal earthquake struck 36 km N of Adi Keyh, Eritrea, at a depth of 10.0 km and coordinates 15.1755°, 39.3951°. This earthquake was detected by 55 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 15.18°, 39.40°

Earthquake Details

Magnitude
4.6 mb
Depth
10.0 km
shallow crustal
Location
15.1755°N
39.3951°E

Technical Information

Event ID
us6000kxnz
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Stations Used
55
Azimuthal Gap
127.0°
Min Station Distance
4.940°
RMS Residual
0.45 sec
Last Updated
2023-10-07 21:38:57 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Adi Keyh, Eritrea?

The magnitude 4.6 earthquake that struck 36 km N of Adi Keyh, Eritrea on August 3, 2023 at 23:15 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 15.1755°, 39.3951°, which is 36 km N of Adi Keyh, Eritrea.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000kxnz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, August 3, 2023). M4.6 Earthquake 36 km N of Adi Keyh, EritreaAugust 3, 2023. Retrieved October 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kxnz/