2.3

M2.3 Earthquake 25 km N of Spencer, Idaho — September 28, 2025

2025-09-28 18:40:03 UTC (2025-09-28) · approx. 11:40 AM UTC-7 local

MagnitudeM2.3(ml)
Time18:40 UTC≈ 11:40 AM UTC-7
Depth10.3 kmshallow crustal
Coordinates44.587°, -112.222°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 44.59°, -112.22°

Earthquake Details

Magnitude
2.3 ml
Depth
10.3 km
shallow crustal
Location
44.5868°N
-112.2225°E

Technical Information

Event ID
mb90113598
Event Type
earthquake
Status
✓ Reviewed
Significance
84
Stations Used
25
Azimuthal Gap
83.0°
Min Station Distance
0.303°
RMS Residual
0.24 sec
Last Updated
2025-09-28 22:16:39 UTC

Nearby Earthquakes (Last 7 Days)

3.2
18 km N of Leadore, Idaho
2 days ago · 12.7 km deep

Actions

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Location

Idaho
View all Idaho earthquakes

Understanding This Data

Magnitude 2.3 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Be Prepared

→ What to do during an earthquake→ Create an emergency plan→ Emergency kit essentials→ See all M4.5+ earthquakes today

Authoritative source: USGS event page (event ID: mb90113598). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, September 28, 2025). M2.3 Earthquake 25 km N of Spencer, Idaho — September 28, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/mb90113598/