3.3

M3.3 Earthquake 13 km N of Ovando, Montana — October 5, 2026

2026-10-05 02:34:54 UTC (1 hour ago) · approx. 6:34 PM UTC-8 local

MagnitudeM3.3(ml)
Time02:34 UTC≈ 6:34 PM UTC-8
Depth5.0 kmshallow crustal
Coordinates47.137°, -113.108°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 5, 2026 at 02:34 UTC, a magnitude 3.3 shallow crustal earthquake struck 13 km N of Ovando, Montana, at a depth of 5.0 km and coordinates 47.1368°, -113.1080°.

Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.1 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 105 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 47.14°, -113.11°

Earthquake Details

Magnitude
3.3 ml
Depth
5.0 km
shallow crustal
Location
47.1368°N
-113.1080°E

Technical Information

Event ID
mb90210028
Event Type
earthquake
Status
✓ Reviewed
Significance
162
Stations Used
44
Azimuthal Gap
79.0°
Min Station Distance
0.243°
RMS Residual
0.26 sec
Last Updated
2026-10-05 03:11:14 UTC

Common Questions

How strong was the magnitude 3.3 earthquake near Ovando, Montana?

The magnitude 3.3 earthquake that struck 13 km N of Ovando, Montana on October 5, 2026 at 02:34 UTC had a depth of 5.0 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 3.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.3 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: mb90210028). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, October 5, 2026). M3.3 Earthquake 13 km N of Ovando, Montana — October 5, 2026. Retrieved October 5, 2026 from https://www.earthquaketracker.org/earthquakes/event/mb90210028/