M4.2 Earthquake 46 km E of Massawa, Eritrea — July 17, 2020
2020-07-17 18:45:43 UTC (2020-07-17) · approx. 9:45 PM UTC+3 local
On July 17, 2020 at 18:45 UTC, a magnitude 4.2 shallow crustal earthquake struck 46 km E of Massawa, Eritrea, at a depth of 10.0 km and coordinates 15.6650°, 39.9018°.
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.
Earthquake Details
39.9018°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Massawa, Eritrea?
The magnitude 4.2 earthquake that struck 46 km E of Massawa, Eritrea on July 17, 2020 at 18:45 UTC had a depth of 10.0 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.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000b2u0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 17, 2020). M4.2 Earthquake 46 km E of Massawa, Eritrea — July 17, 2020. Retrieved September 26, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b2u0/