M4.5 Earthquake 28 km SSE of Iztapa, Guatemala — October 20, 2020
2020-10-20 21:37:19 UTC (2020-10-20) · approx. 3:37 PM UTC-6 local
On October 20, 2020 at 21:37 UTC, a magnitude 4.5 shallow crustal earthquake struck 28 km SSE of Iztapa, Guatemala, at a depth of 41.9 km and coordinates 13.6892°, -90.6203°.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-90.6203°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near Iztapa, Guatemala?
The magnitude 4.5 earthquake that struck 28 km SSE of Iztapa, Guatemala on October 20, 2020 at 21:37 UTC had a depth of 41.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.6892°, -90.6203°, which is 28 km SSE of Iztapa, Guatemala.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000cad1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, October 20, 2020). M4.5 Earthquake 28 km SSE of Iztapa, Guatemala — October 20, 2020. Retrieved December 29, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000cad1/