M3.0 Earthquake 7 km NNE of Manchester, Oklahoma — July 12, 2021
2021-07-12 17:03:58 UTC (2021-07-12) · approx. 10:03 AM UTC-7 local
Felt by 11 people across nearby locations.
On July 12, 2021 at 17:03 UTC, a magnitude 3.0 shallow crustal earthquake struck 7 km NNE of Manchester, Oklahoma, at a depth of 5.0 km and coordinates 37.0539°, -97.9971°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Oklahoma, a region characterized by induced seismicity from high-volume wastewater injection into the Arbuckle Group formation, which reactivates ancient basement faults. View all earthquakes in Oklahoma.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 11 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
-97.9971°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.0 earthquake near Manchester, Oklahoma?
The magnitude 3.0 earthquake that struck 7 km NNE of Manchester, Oklahoma on July 12, 2021 at 17:03 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 37.0539°, -97.9971°, which is 7 km NNE of Manchester, Oklahoma. View all earthquakes in Oklahoma.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.0 earthquakes can continue for several days and gradually diminish over time.
Has Oklahoma had earthquakes this big before?
The largest recorded earthquake in Oklahoma was the M5.8 Pawnee earthquake of September 3, 2016. Today's magnitude 3.0 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000eunx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 12, 2021). M3.0 Earthquake 7 km NNE of Manchester, Oklahoma — July 12, 2021. Retrieved September 17, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000eunx/