M3.3 Earthquake 7 km ENE of Assaria, Kansas — August 3, 2025
2025-08-03 22:35:56 UTC (2025-08-03) · approx. 3:35 PM UTC-7 local
Felt by 13 people across nearby locations.
On August 3, 2025 at 22:35 UTC, a magnitude 3.3 shallow crustal earthquake struck 7 km ENE of Assaria, Kansas, at a depth of 5.0 km and coordinates 38.6961°, -97.5252°. This earthquake was detected by 32 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 172, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 13 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
-97.5252°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.3 earthquake near Assaria, Kansas?
The magnitude 3.3 earthquake that struck 7 km ENE of Assaria, Kansas on August 3, 2025 at 22:35 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 38.6961°, -97.5252°, which is 7 km ENE of Assaria, Kansas.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.3 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000qxyj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 3, 2025). M3.3 Earthquake 7 km ENE of Assaria, Kansas — August 3, 2025. Retrieved October 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qxyj/