2.5

M2.5 Earthquake 23 km SSW of Mammoth, Wyoming — October 28, 2025

2025-10-28 15:11:06 UTC (2025-10-28) · approx. 8:11 AM UTC-7 local

MagnitudeM2.5(ml)
Time15:11 UTC≈ 8:11 AM UTC-7
Depth5.2 kmshallow crustal
Coordinates44.795°, -110.846°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 44.79°, -110.85°

Earthquake Details

Magnitude
2.5 ml
Depth
5.2 km
shallow crustal
Location
44.7948°N
-110.8462°E

Technical Information

Event ID
uu80120511
Event Type
earthquake
Status
✓ Reviewed
Significance
97
Stations Used
28
Azimuthal Gap
107.0°
Min Station Distance
0.007°
RMS Residual
0.16 sec
Last Updated
2026-01-15 22:46:59 UTC

Nearby Earthquakes (Last 7 Days)

2.6
7 km NW of Challis, Idaho
6 days ago · 5.0 km deep

Actions

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Location

Wyoming
View all Wyoming earthquakes

Understanding This Data

Magnitude 2.5 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: uu80120511). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, October 28, 2025). M2.5 Earthquake 23 km SSW of Mammoth, Wyoming — October 28, 2025. Retrieved May 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/uu80120511/