2.1

M2.1 Earthquake 2 km SSE of Cushing, Oklahoma — April 19, 2021

2021-04-19 21:06:21 UTC (2021-04-19) · approx. 3:06 PM UTC-6 local

MagnitudeM2.1(ml)
Time21:06 UTC≈ 3:06 PM UTC-6
Depth7.7 kmshallow crustal
Coordinates35.962°, -96.752°
Felt by3DYFI responses
Status✓ Reviewed by USGS

On April 19, 2021 at 21:06 UTC, a magnitude 2.1 shallow crustal earthquake struck 2 km SSE of Cushing, Oklahoma, at a depth of 7.7 km and coordinates 35.9625°, -96.7525°.

Physical scale: An earthquake of magnitude 2.1 releases seismic energy equivalent to roughly 23.6 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 18 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 35.96°, -96.75°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 3 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 2 km SSE of Cushing, Oklahoma

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

Earthquake Details

Magnitude
2.1 ml
Depth
7.7 km
shallow crustal
Location
35.9625°N
-96.7525°E
Felt Reports
3
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
ok2021hqyc
Event Type
earthquake
Status
✓ Reviewed
Significance
70
Stations Used
99
Azimuthal Gap
84.0°
0
RMS Residual
0.21 sec
Last Updated
2021-07-03 16:48:32 UTC

Common Questions

How strong was the magnitude 2.1 earthquake near Cushing, Oklahoma?

The magnitude 2.1 earthquake that struck 2 km SSE of Cushing, Oklahoma on April 19, 2021 at 21:06 UTC had a depth of 7.7 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 2.1 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: ok2021hqyc). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, April 19, 2021). M2.1 Earthquake 2 km SSE of Cushing, Oklahoma — April 19, 2021. Retrieved July 3, 2021 from https://www.earthquaketracker.org/earthquakes/event/ok2021hqyc/