2.1

M2.1 Earthquake 3 km SSW of Westminster, MassachusettsApril 22, 2025

2025-04-22 16:26:54 UTC (2025-04-22) · approx. 11:26 AM UTC-5 local

MagnitudeM2.1(ml)
Time16:26 UTC11:26 AM UTC-5
Depth5.8 kmshallow crustal
Coordinates42.513°, -71.929°
Felt by6DYFI responses
Status✓ Reviewed by USGS

On April 22, 2025 at 16:26 UTC, a magnitude 2.1 shallow crustal earthquake struck 3 km SSW of Westminster, Massachusetts, at a depth of 5.8 km and coordinates 42.5128°, -71.9289°.

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.

Map showing earthquake epicenter at 42.51°, -71.93°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 6 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M2.1 earthquake near 3 km SSW of Westminster, Massachusetts

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
2.1 ml
Depth
5.8 km
shallow crustal
Location
42.5128°N
-71.9289°E
Felt Reports
6
DYFI responses
Community Intensity
3.4
CDI from reports

Technical Information

Event ID
us7000pu8p
Event Type
earthquake
Status
✓ Reviewed
Significance
70
Stations Used
39
Azimuthal Gap
59.0°
Min Station Distance
0.272°
RMS Residual
0.38 sec
Last Updated
2025-06-27 00:34:51 UTC

Common Questions

How strong was the magnitude 2.1 earthquake near Westminster, Massachusetts?

The magnitude 2.1 earthquake that struck 3 km SSW of Westminster, Massachusetts on April 22, 2025 at 16:26 UTC had a depth of 5.8 km. For context, this was a minor earthquake typically detected only by instruments.

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.

Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000pu8p). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, April 22, 2025). M2.1 Earthquake 3 km SSW of Westminster, MassachusettsApril 22, 2025. Retrieved June 27, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pu8p/