2.0

M2.0 Earthquake 2 km ESE of Friendsville, Tennessee — April 20, 2021

2021-04-20 19:39:04 UTC (2021-04-20) · approx. 1:39 PM UTC-6 local

MagnitudeM2.0(md)
Time19:39 UTC≈ 1:39 PM UTC-6
Depth17.7 kmshallow crustal
Coordinates35.751°, -84.111°
Felt by1DYFI response
Status✓ Reviewed by USGS

On April 20, 2021 at 19:39 UTC, a magnitude 2.0 shallow crustal earthquake struck 2 km ESE of Friendsville, Tennessee, at a depth of 17.7 km and coordinates 35.7507°, -84.1112°.

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.

Map showing earthquake epicenter at 35.75°, -84.11°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response 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 M2.0 earthquake near 2 km ESE of Friendsville, Tennessee

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

Earthquake Details

Magnitude
2.0 md
Depth
17.7 km
shallow crustal
Location
35.7507°N
-84.1112°E
Felt Reports
1
DYFI responses
Community Intensity
2.7
CDI from reports

Technical Information

Event ID
se60126523
Event Type
earthquake
Status
✓ Reviewed
Significance
62
Stations Used
11
Azimuthal Gap
82.0°
Min Station Distance
0.104°
RMS Residual
0.10 sec
Last Updated
2021-04-22 16:26:56 UTC

Common Questions

How strong was the magnitude 2.0 earthquake near Friendsville, Tennessee?

The magnitude 2.0 earthquake that struck 2 km ESE of Friendsville, Tennessee on April 20, 2021 at 19:39 UTC had a depth of 17.7 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 2.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.0 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: se60126523). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, April 20, 2021). M2.0 Earthquake 2 km ESE of Friendsville, Tennessee — April 20, 2021. Retrieved April 22, 2021 from https://www.earthquaketracker.org/earthquakes/event/se60126523/