2.1

M2.1 Earthquake 18 km SSE of Swan Lake, Montana — September 26, 2023

2023-09-26 23:29:26 UTC (2023-09-26) · approx. 3:29 PM UTC-8 local

MagnitudeM2.1(ml)
Time23:29 UTC≈ 3:29 PM UTC-8
Depth3.1 kmshallow crustal
Coordinates47.778°, -113.744°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 47.78°, -113.74°

Earthquake Details

Magnitude
2.1 ml
Depth
3.1 km
shallow crustal
Location
47.7775°N
-113.7440°E

Technical Information

Event ID
mb90028568
Event Type
earthquake
Status
✓ Reviewed
Significance
67
Stations Used
24
Azimuthal Gap
87.0°
Min Station Distance
0.200°
RMS Residual
0.13 sec
Last Updated
2023-09-27 12:41:46 UTC

Nearby Earthquakes (Last 7 Days)

2.9
18 km ENE of Okanagan Falls, Canada
5 days ago · 10.0 km deep

Actions

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Location

Montana
View all Montana earthquakes

Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: mb90028568). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, September 26, 2023). M2.1 Earthquake 18 km SSE of Swan Lake, Montana — September 26, 2023. Retrieved September 27, 2023 from https://www.earthquaketracker.org/earthquakes/event/mb90028568/