2.1

M2.1 Earthquake 17 km NNE of Dillon, Montana — December 28, 2021

2021-12-28 20:27:04 UTC (2021-12-28) · approx. 12:27 PM UTC-8 local

MagnitudeM2.1(ml)
Time20:27 UTC≈ 12:27 PM UTC-8
Depth8.3 kmshallow crustal
Coordinates45.372°, -112.580°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 45.37°, -112.58°

Earthquake Details

Magnitude
2.1 ml
Depth
8.3 km
shallow crustal
Location
45.3720°N
-112.5802°E

Technical Information

Event ID
mb80534639
Event Type
earthquake
Status
✓ Reviewed
Significance
71
Stations Used
23
Azimuthal Gap
111.0°
Min Station Distance
0.015°
RMS Residual
0.15 sec
Last Updated
2021-12-28 20:49:29 UTC

Nearby Earthquakes (Last 7 Days)

3.4
3 km NNW of Little America, Wyoming
1 day ago · -3.4 km deep
2.7
10 km WNW of Wisdom, Montana
4 days ago · 23.3 km deep
3.8
22 km NE of Granger, Wyoming
4 days ago · 3.8 km deep
3.2
23 km NW of Stanley, Idaho
4 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: mb80534639). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, December 28, 2021). M2.1 Earthquake 17 km NNE of Dillon, Montana — December 28, 2021. Retrieved December 28, 2021 from https://www.earthquaketracker.org/earthquakes/event/mb80534639/