4.6

M4.6 Earthquake 30 km ENE of Puerto Obaldía, PanamaOctober 8, 2023

2023-10-08 23:35:03 UTC (2023-10-08) · approx. 6:35 PM UTC-5 local

MagnitudeM4.6(mb)
Time23:35 UTC6:35 PM UTC-5
Depth20.8 kmshallow crustal
Coordinates8.816°, -77.188°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 8, 2023 at 23:35 UTC, a magnitude 4.6 shallow crustal earthquake struck 30 km ENE of Puerto Obaldía, Panama, at a depth of 20.8 km and coordinates 8.8165°, -77.1877°. This earthquake was detected by 76 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 8.82°, -77.19°

Earthquake Details

Magnitude
4.6 mb
Depth
20.8 km
shallow crustal
Location
8.8165°N
-77.1877°E

Technical Information

Event ID
us6000le4f
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Stations Used
76
Azimuthal Gap
43.0°
Min Station Distance
0.811°
RMS Residual
0.48 sec
Last Updated
2023-12-16 22:13:05 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Puerto Obaldía, Panama?

The magnitude 4.6 earthquake that struck 30 km ENE of Puerto Obaldía, Panama on October 8, 2023 at 23:35 UTC had a depth of 20.8 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 8.8165°, -77.1877°, which is 30 km ENE of Puerto Obaldía, Panama.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000le4f). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, October 8, 2023). M4.6 Earthquake 30 km ENE of Puerto Obaldía, PanamaOctober 8, 2023. Retrieved December 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000le4f/