M2.1 Earthquake 7 km SW of Cornwall, Canada — February 20, 2023
2023-02-20 23:49:46 UTC (2023-02-20) · approx. 6:49 PM UTC-5 local
Felt by 10 people across nearby locations.
On February 20, 2023 at 23:49 UTC, a magnitude 2.1 shallow crustal earthquake struck 7 km SW of Cornwall, Canada, at a depth of 10.0 km and coordinates 44.9585°, -74.7849°. This earthquake was detected by 19 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 72, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 2.1 releases seismic energy equivalent to roughly 21.3 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 17 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 10 citizen responses 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
-74.7849°E
Technical Information
Common Questions
How strong was the magnitude 2.1 earthquake near Cornwall, Canada?
The magnitude 2.1 earthquake that struck 7 km SW of Cornwall, Canada on February 20, 2023 at 23:49 UTC had a depth of 10.0 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 44.9585°, -74.7849°, which is 7 km SW of Cornwall, Canada.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.1 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000jqfy). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, February 20, 2023). M2.1 Earthquake 7 km SW of Cornwall, Canada — February 20, 2023. Retrieved April 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jqfy/