3.2

M3.2 Earthquake 13 km NE of Colstrip, MontanaMarch 24, 2022

2022-03-24 19:51:01 UTC (2022-03-24) · approx. 12:51 PM UTC-7 local

MagnitudeM3.2(ml)
Time19:51 UTC12:51 PM UTC-7
Depth0.0 kmshallow crustal
Coordinates45.962°, -106.490°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 24, 2022 at 19:51 UTC, a magnitude 3.2 shallow crustal earthquake struck 13 km NE of Colstrip, Montana, at a depth of 0.0 km and coordinates 45.9621°, -106.4900°.

Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 951 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 97 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 45.96°, -106.49°

Earthquake Details

Magnitude
3.2 ml
Depth
0.0 km
shallow crustal
Location
45.9621°N
-106.4900°E

Technical Information

Event ID
us7000gwz9
Event Type
mining explosion
Status
✓ Reviewed
Significance
158
Azimuthal Gap
122.0°
Min Station Distance
0.749°
RMS Residual
0.83 sec
Last Updated
2022-05-28 18:35:34 UTC

Common Questions

How strong was the magnitude 3.2 earthquake near Colstrip, Montana?

The magnitude 3.2 earthquake that struck 13 km NE of Colstrip, Montana on March 24, 2022 at 19:51 UTC had a depth of 0.0 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 3.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.2 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000gwz9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, March 24, 2022). M3.2 Earthquake 13 km NE of Colstrip, MontanaMarch 24, 2022. Retrieved May 28, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gwz9/