M4.5 Earthquake 66 km S of Puerto San José, Guatemala — June 21, 2026
2026-06-21 13:27:00 UTC (2026-06-21) · approx. 7:27 AM UTC-6 local
On June 21, 2026 at 13:27 UTC, a magnitude 4.5 shallow crustal earthquake struck 66 km S of Puerto San José, Guatemala, at a depth of 35.0 km and coordinates 13.3271°, -90.7991°. This earthquake was detected by 52 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
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
-90.7991°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Puerto San José, Guatemala?
The magnitude 4.5 earthquake that struck 66 km S of Puerto San José, Guatemala on June 21, 2026 at 13:27 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.3271°, -90.7991°, which is 66 km S of Puerto San José, 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.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000suzm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 21, 2026). M4.5 Earthquake 66 km S of Puerto San José, Guatemala — June 21, 2026. Retrieved June 29, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000suzm/