3.0

M3.0 Earthquake 26 km WNW of Stanley, IdahoMay 2, 2023

2023-05-02 17:25:31 UTC (2023-05-02) · approx. 9:25 AM UTC-8 local

MagnitudeM3.0(ml)
Time17:25 UTC9:25 AM UTC-8
Depth20.4 kmshallow crustal
Coordinates44.319°, -115.242°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 2, 2023 at 17:25 UTC, a magnitude 3.0 shallow crustal earthquake struck 26 km WNW of Stanley, Idaho, at a depth of 20.4 km and coordinates 44.3192°, -115.2416°.

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.

Map showing earthquake epicenter at 44.32°, -115.24°

Earthquake Details

Magnitude
3.0 ml
Depth
20.4 km
shallow crustal
Location
44.3192°N
-115.2416°E

Technical Information

Event ID
us7000jxj8
Event Type
earthquake
Status
✓ Reviewed
Significance
138
Stations Used
38
Azimuthal Gap
40.0°
Min Station Distance
0.831°
RMS Residual
0.56 sec
Last Updated
2023-07-15 22:10:55 UTC

Common Questions

How strong was the magnitude 3.0 earthquake near Stanley, Idaho?

The magnitude 3.0 earthquake that struck 26 km WNW of Stanley, Idaho on May 2, 2023 at 17:25 UTC had a depth of 20.4 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 3.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.0 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000jxj8). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, May 2, 2023). M3.0 Earthquake 26 km WNW of Stanley, IdahoMay 2, 2023. Retrieved July 15, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jxj8/