M2.0 Earthquake 5 km S of Alton, New Hampshire — April 14, 2025
2025-04-14 20:44:05 UTC (2025-04-14) · approx. 3:44 PM UTC-5 local
Felt by 25 people across nearby locations.
On April 14, 2025 at 20:44 UTC, a magnitude 2.0 shallow crustal earthquake struck 5 km S of Alton, New Hampshire, at a depth of 5.0 km and coordinates 43.4005°, -71.2282°. This earthquake was detected by 14 seismic stations with good location accuracy and was assigned a USGS significance rating of 71, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 2.0 releases seismic energy equivalent to roughly 15.1 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 14 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 25 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
-71.2282°E
Technical Information
Common Questions
How strong was the magnitude 2.0 earthquake near Alton, New Hampshire?
The magnitude 2.0 earthquake that struck 5 km S of Alton, New Hampshire on April 14, 2025 at 20:44 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 43.4005°, -71.2282°, which is 5 km S of Alton, New Hampshire.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.0 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000q61s). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 14, 2025). M2.0 Earthquake 5 km S of Alton, New Hampshire — April 14, 2025. Retrieved June 14, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000q61s/