M4.3 Earthquake 7 km SE of Orosi, Costa Rica — August 1, 2026
2026-08-01 02:16:27 UTC (1 hour ago) · approx. 8:16 PM UTC-6 local
Felt by 25 people across nearby locations.
On August 1, 2026 at 02:16 UTC, a magnitude 4.3 shallow crustal earthquake struck 7 km SE of Orosi, Costa Rica, at a depth of 10.0 km and coordinates 9.7477°, -83.8046°. This earthquake was detected by 21 seismic stations with good location accuracy and was assigned a USGS significance rating of 296, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — 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 25 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
-83.8046°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Orosi, Costa Rica?
The magnitude 4.3 earthquake that struck 7 km SE of Orosi, Costa Rica on August 1, 2026 at 02:16 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 9.7477°, -83.8046°, which is 7 km SE of Orosi, Costa Rica.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000thdg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 1, 2026). M4.3 Earthquake 7 km SE of Orosi, Costa Rica — August 1, 2026. Retrieved August 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000thdg/