3.2

M3.2 Earthquake 34 km NNE of Ranchester, Wyoming — July 15, 2020

2020-07-15 18:21:48 UTC (2020-07-15) · approx. 11:21 AM UTC-7 local

MagnitudeM3.2(ml)
Time18:21 UTC≈ 11:21 AM UTC-7
Depth0.0 kmshallow crustal
Coordinates45.166°, -106.922°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 15, 2020 at 18:21 UTC, a magnitude 3.2 shallow crustal earthquake struck 34 km NNE of Ranchester, Wyoming, at a depth of 0.0 km and coordinates 45.1664°, -106.9217°.

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 45.17°, -106.92°

Earthquake Details

Magnitude
3.2 ml
Depth
0.0 km
shallow crustal
Location
45.1664°N
-106.9217°E

Technical Information

Event ID
us7000ap50
Event Type
mining explosion
Status
✓ Reviewed
Significance
158
Azimuthal Gap
98.0°
Min Station Distance
1.598°
RMS Residual
0.65 sec
Last Updated
2020-09-26 16:58:22 UTC

Common Questions

How strong was the magnitude 3.2 earthquake near Ranchester, Wyoming?

The magnitude 3.2 earthquake that struck 34 km NNE of Ranchester, Wyoming on July 15, 2020 at 18:21 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: us7000ap50). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, July 15, 2020). M3.2 Earthquake 34 km NNE of Ranchester, Wyoming — July 15, 2020. Retrieved September 26, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000ap50/