M4.6 Earthquake 228 km W of Bandon, Oregon — July 21, 2026
2026-07-21 18:32:53 UTC (2026-07-21) · approx. 10:32 AM UTC-8 local
Felt by 2 people across nearby locations.
On July 21, 2026 at 18:32 UTC, a magnitude 4.6 shallow crustal earthquake struck 228 km W of Bandon, Oregon, at a depth of 10.0 km and coordinates 43.3428°, -127.2006°. This earthquake was detected by 96 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Oregon, a region characterized by the southern Cascadia Subduction Zone, with additional seismicity from crustal faults in the Willamette Valley. The nearest mapped fault system is the Cascadia Subduction Zone. View all earthquakes in Oregon.
Learn more: Cascadia Subduction Zone · Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 2 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
-127.2006°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Bandon, Oregon?
The magnitude 4.6 earthquake that struck 228 km W of Bandon, Oregon on July 21, 2026 at 18:32 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 43.3428°, -127.2006°, which is 228 km W of Bandon, Oregon. View all earthquakes in Oregon.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Has Oregon had earthquakes this big before?
The largest recorded earthquake in Oregon was the M7.3 offshore Brookings earthquake of November 23, 1873. Today's magnitude 4.6 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000t2a5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 21, 2026). M4.6 Earthquake 228 km W of Bandon, Oregon — July 21, 2026. Retrieved August 6, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t2a5/