M4.4 Earthquake 26 km SSW of Petatlán, Mexico — October 29, 2021
2021-10-29 18:33:18 UTC (2021-10-29) · approx. 11:33 AM UTC-7 local
On October 29, 2021 at 18:33 UTC, a magnitude 4.4 shallow crustal earthquake struck 26 km SSW of Petatlán, Mexico, at a depth of 13.2 km and coordinates 17.3067°, -101.3480°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response 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
-101.3480°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Petatlán, Mexico?
The magnitude 4.4 earthquake that struck 26 km SSW of Petatlán, Mexico on October 29, 2021 at 18:33 UTC had a depth of 13.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000fpvg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 29, 2021). M4.4 Earthquake 26 km SSW of Petatlán, Mexico — October 29, 2021. Retrieved January 14, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fpvg/