2.1

M2.1 Earthquake 6 km NNE of Windsor, MaineJuly 19, 2024

2024-07-19 23:36:15 UTC (2024-07-19) · approx. 6:36 PM UTC-5 local

Felt by 40 people across nearby locations.

MagnitudeM2.1(mb_lg)
Time23:36 UTC6:36 PM UTC-5
Depth8.5 kmshallow crustal
Coordinates44.369°, -69.549°
Felt by40DYFI responses
Status✓ Reviewed by USGS

On July 19, 2024 at 23:36 UTC, a magnitude 2.1 shallow crustal earthquake struck 6 km NNE of Windsor, Maine, at a depth of 8.5 km and coordinates 44.3694°, -69.5494°. This earthquake was detected by 31 seismic stations with good location accuracy and was assigned a USGS significance rating of 87, 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.

Map showing earthquake epicenter at 44.37°, -69.55°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 40 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 6 km NNE of Windsor, Maine

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

Earthquake Details

Magnitude
2.1 mb_lg
Depth
8.5 km
shallow crustal
Location
44.3694°N
-69.5494°E
Felt Reports
40
DYFI responses
Community Intensity
4.8
CDI from reports

Technical Information

Event ID
us7000n0e3
Event Type
earthquake
Status
✓ Reviewed
Significance
87
Stations Used
31
Azimuthal Gap
125.0°
Min Station Distance
0.211°
RMS Residual
0.33 sec
Last Updated
2024-09-28 22:40:45 UTC

Common Questions

How strong was the magnitude 2.1 earthquake near Windsor, Maine?

The magnitude 2.1 earthquake that struck 6 km NNE of Windsor, Maine on July 19, 2024 at 23:36 UTC had a depth of 8.5 km. For context, this was a minor earthquake typically detected only by instruments.

Where did the earthquake occur?

The earthquake epicenter was located at 44.3694°, -69.5494°, which is 6 km NNE of Windsor, Maine.

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: us7000n0e3). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, July 19, 2024). M2.1 Earthquake 6 km NNE of Windsor, MaineJuly 19, 2024. Retrieved September 28, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n0e3/