M2.5 Earthquake 5 km SSW of Sebec, Maine — April 23, 2022
2022-04-23 21:02:56 UTC (2022-04-23) · approx. 4:02 PM UTC-5 local
Felt by 15 people across nearby locations.
On April 23, 2022 at 21:02 UTC, a magnitude 2.5 shallow crustal earthquake struck 5 km SSW of Sebec, Maine, at a depth of 5.0 km and coordinates 45.2228°, -69.1376°. This earthquake was detected by 13 seismic stations with good location accuracy and was assigned a USGS significance rating of 102, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 2.5 releases seismic energy equivalent to roughly 84.8 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 32 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 15 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
-69.1376°E
Technical Information
Common Questions
How strong was the magnitude 2.5 earthquake near Sebec, Maine?
The magnitude 2.5 earthquake that struck 5 km SSW of Sebec, Maine on April 23, 2022 at 21:02 UTC had a depth of 5.0 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 45.2228°, -69.1376°, which is 5 km SSW of Sebec, Maine.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us6000hfx6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, April 23, 2022). M2.5 Earthquake 5 km SSW of Sebec, Maine — April 23, 2022. Retrieved July 5, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000hfx6/