M5.1 Earthquake 24 km WSW of Azzaba, Algeria — November 22, 2020
2020-11-22 03:53:08 UTC (2020-11-22) · approx. 3:53 AM UTC+0 local
Felt by 45 people across nearby locations. Maximum shaking intensity MMI 6.3 (very strong).
On November 22, 2020 at 03:53 UTC, a magnitude 5.1 shallow crustal earthquake struck 24 km WSW of Azzaba, Algeria, at a depth of 10.0 km and coordinates 36.6442°, 6.8625°. The earthquake was reported felt by 45 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 6.3 (very strong).
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 45 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
6.8625°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake near Azzaba, Algeria?
The magnitude 5.1 earthquake that struck 24 km WSW of Azzaba, Algeria on November 22, 2020 at 03:53 UTC had a depth of 10.0 km. It was felt by 45 people with maximum shaking intensity of MMI 6.3 (very strong). For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 36.6442°, 6.8625°, which is 24 km WSW of Azzaba, Algeria.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000crds). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, November 22, 2020). M5.1 Earthquake 24 km WSW of Azzaba, Algeria — November 22, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000crds/