M4.9 Earthquake 84 km SSW of Masachapa, Nicaragua — October 3, 2021
2021-10-03 21:09:59 UTC (2021-10-03) · approx. 3:09 PM UTC-6 local
On October 3, 2021 at 21:09 UTC, a magnitude 4.9 shallow crustal earthquake struck 84 km SSW of Masachapa, Nicaragua, at a depth of 35.0 km and coordinates 11.0963°, -86.8484°.
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.
Earthquake Details
-86.8484°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Masachapa, Nicaragua?
The magnitude 4.9 earthquake that struck 84 km SSW of Masachapa, Nicaragua on October 3, 2021 at 21:09 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 11.0963°, -86.8484°, which is 84 km SSW of Masachapa, Nicaragua.
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: us6000frdl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 3, 2021). M4.9 Earthquake 84 km SSW of Masachapa, Nicaragua — October 3, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000frdl/