M4.5 Earthquake 37 km SE of Iztapa, Guatemala — January 21, 2023
2023-01-21 20:36:03 UTC (2023-01-21) · approx. 2:36 PM UTC-6 local
On January 21, 2023 at 20:36 UTC, a magnitude 4.5 intermediate depth earthquake struck 37 km SE of Iztapa, Guatemala, at a depth of 70.5 km and coordinates 13.6541°, -90.5080°. This earthquake was detected by 17 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
-90.5080°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 37 km SE of Iztapa, Guatemala on January 21, 2023 at 20:36 UTC had a depth of 70.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.6541°, -90.5080°, which is 37 km SE 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: us6000jjqy). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, January 21, 2023). M4.5 Earthquake 37 km SE of Iztapa, Guatemala — January 21, 2023. Retrieved March 31, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jjqy/