M5.0 Earthquake 27 km W of Río Grande, Panama — October 27, 2026
2026-10-27 15:26:02 UTC (1 hour ago) · approx. 10:26 AM UTC-5 local
0Aftershock of the M6.1 mainshock.
On October 27, 2026 at 15:26 UTC, a magnitude 5.0 shallow crustal earthquake struck 27 km W of Río Grande, Panama, at a depth of 10.0 km and coordinates 7.7060°, -81.5840°.0 This earthquake was detected by 138 seismic stations with good location accuracy and was assigned a USGS significance rating of 385, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 km — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 6.1 mainshock that occurred 14 days ago 15 km W of Río Grande, Panama. Since the mainshock, the USGS has recorded 23 aftershocks in this area. Aftershock activity is expected to continue for weeks to months as stresses on surrounding faults redistribute.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from submitted 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
-81.5840°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.0 earthquake near Río Grande, Panama?
The magnitude 5.0 earthquake that struck 27 km W of Río Grande, Panama on October 27, 2026 at 15:26 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 7.7060°, -81.5840°, which is 27 km W of Río Grande, Panama.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.
Is this the same earthquake as the M6.1 one earlier?
No. This magnitude 5.0 earthquake is an aftershock of the larger magnitude 6.1 mainshock that occurred earlier 15 km W of Río Grande, Panama. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Authoritative source: USGS event page (event ID: us7000ttgm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 27, 2026). M5.0 Earthquake 27 km W of Río Grande, Panama — October 27, 2026. Retrieved October 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000ttgm/