M4.9 Earthquake 82 km ENE of The Valley, Anguilla — November 20, 2023
2023-11-20 12:50:24 UTC (2023-11-20) · approx. 8:50 AM UTC-4 local
Felt by 1 person across nearby locations.
On November 20, 2023 at 12:50 UTC, a magnitude 4.9 shallow crustal earthquake struck 82 km ENE of The Valley, Anguilla, at a depth of 21.7 km and coordinates 18.4828°, -62.3281°. This earthquake was detected by 119 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 370, 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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response 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
-62.3281°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near The Valley, Anguilla?
The magnitude 4.9 earthquake that struck 82 km ENE of The Valley, Anguilla on November 20, 2023 at 12:50 UTC had a depth of 21.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 18.4828°, -62.3281°, which is 82 km ENE of The Valley, Anguilla.
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.
Actions
Authoritative source: USGS event page (event ID: us6000lplj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 20, 2023). M4.9 Earthquake 82 km ENE of The Valley, Anguilla — November 20, 2023. Retrieved February 1, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000lplj/