M2.5 Earthquake 4 km WSW of Concrete, Washington — May 7, 2026
2026-05-07 05:20:07 UTC (2026-05-07) · approx. 9:20 PM UTC-8 local
Felt by 161 people across surrounding communities.
On May 7, 2026 at 05:20 UTC, a magnitude 2.5 shallow crustal earthquake struck 4 km WSW of Concrete, Washington, at a depth of 4.7 km and coordinates 48.5305°, -121.8078°. This earthquake was detected by 23 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 160, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 2.5 releases seismic energy equivalent to roughly 97.4 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 34 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Washington, a region characterized by the Cascadia Subduction Zone, where the Juan de Fuca Plate subducts beneath North America and is capable of producing M9+ megathrust earthquakes. The nearest mapped fault system is the Cascadia Subduction Zone. View all earthquakes in Washington.
Learn more: Cascadia Subduction Zone · Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 161 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
-121.8078°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.5 earthquake near Concrete, Washington?
The magnitude 2.5 earthquake that struck 4 km WSW of Concrete, Washington on May 7, 2026 at 05:20 UTC had a depth of 4.7 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 48.5305°, -121.8078°, which is 4 km WSW of Concrete, Washington. View all earthquakes in Washington.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.5 earthquakes can continue for several days and gradually diminish over time.
Has Washington had earthquakes this big before?
The largest recorded earthquake in Washington was the M7.4 offshore earthquake of April 13, 1949. Today's magnitude 2.5 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: uw62242697). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 7, 2026). M2.5 Earthquake 4 km WSW of Concrete, Washington — May 7, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/uw62242697/