M4.7 Earthquake 26 km W of Santa Cruz, Costa Rica — March 29, 2021
2021-03-29 20:46:37 UTC (2021-03-29) · approx. 2:46 PM UTC-6 local
Felt by 24 people across nearby locations.
On March 29, 2021 at 20:46 UTC, a magnitude 4.7 shallow crustal earthquake struck 26 km W of Santa Cruz, Costa Rica, at a depth of 31.9 km and coordinates 10.2374°, -85.8249°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 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 24 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
-85.8249°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Santa Cruz, Costa Rica?
The magnitude 4.7 earthquake that struck 26 km W of Santa Cruz, Costa Rica on March 29, 2021 at 20:46 UTC had a depth of 31.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 10.2374°, -85.8249°, which is 26 km W of Santa Cruz, Costa Rica.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000dxhl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 29, 2021). M4.7 Earthquake 26 km W of Santa Cruz, Costa Rica — March 29, 2021. Retrieved June 8, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dxhl/