M4.9 Earthquake 3 km NW of Oyambarillo, Ecuador — November 23, 2021
2021-11-23 16:03:23 UTC (2021-11-23) · approx. 11:03 AM UTC-5 local
Felt by 37 people across nearby locations.
On November 23, 2021 at 16:03 UTC, a magnitude 4.9 shallow crustal earthquake struck 3 km NW of Oyambarillo, Ecuador, at a depth of 4.5 km and coordinates -0.1754°, -78.3560°.
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 37 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
-78.3560°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Oyambarillo, Ecuador?
The magnitude 4.9 earthquake that struck 3 km NW of Oyambarillo, Ecuador on November 23, 2021 at 16:03 UTC had a depth of 4.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -0.1754°, -78.3560°, which is 3 km NW of Oyambarillo, Ecuador.
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.
Authoritative source: USGS event page (event ID: us7000fwgk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 23, 2021). M4.9 Earthquake 3 km NW of Oyambarillo, Ecuador — November 23, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000fwgk/