2.2

M2.2 Earthquake 5 km WSW of Chickamauga, Georgia — July 30, 2020

2020-07-30 20:51:30 UTC (2020-07-30) · approx. 2:51 PM UTC-6 local

MagnitudeM2.2(md)
Time20:51 UTC≈ 2:51 PM UTC-6
Depth11.6 kmshallow crustal
Coordinates34.858°, -85.354°
Felt by1DYFI response
Status✓ Reviewed by USGS

On July 30, 2020 at 20:51 UTC, a magnitude 2.2 shallow crustal earthquake struck 5 km WSW of Chickamauga, Georgia, at a depth of 11.6 km and coordinates 34.8585°, -85.3543°.

Physical scale: An earthquake of magnitude 2.2 releases seismic energy equivalent to roughly 32.2 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 21 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 34.86°, -85.35°

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 M2.2 earthquake near 5 km WSW of Chickamauga, Georgia

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

Earthquake Details

Magnitude
2.2 md
Depth
11.6 km
shallow crustal
Location
34.8585°N
-85.3543°E
Felt Reports
1
DYFI responses
Community Intensity
2.7
CDI from reports

Technical Information

Event ID
se60323186
Event Type
earthquake
Status
✓ Reviewed
Significance
76
Stations Used
17
Azimuthal Gap
84.0°
Min Station Distance
0.117°
RMS Residual
0.10 sec
Last Updated
2020-07-31 19:37:00 UTC

Common Questions

How strong was the magnitude 2.2 earthquake near Chickamauga, Georgia?

The magnitude 2.2 earthquake that struck 5 km WSW of Chickamauga, Georgia on July 30, 2020 at 20:51 UTC had a depth of 11.6 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 2.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.2 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: se60323186). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, July 30, 2020). M2.2 Earthquake 5 km WSW of Chickamauga, Georgia — July 30, 2020. Retrieved July 31, 2020 from https://www.earthquaketracker.org/earthquakes/event/se60323186/