2.1

M2.1 Earthquake 24 km NW of Petrolia, CA — September 20, 2025

2025-09-20 14:43:38 UTC (2025-09-20) · approx. 6:43 AM UTC-8 local

MagnitudeM2.1(md)
Time14:43 UTC≈ 6:43 AM UTC-8
Depth20.3 kmshallow crustal
Coordinates40.449°, -124.513°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 40.45°, -124.51°

Earthquake Details

Magnitude
2.1 md
Depth
20.3 km
shallow crustal
Location
40.4490°N
-124.5132°E

Technical Information

Event ID
nc75239867
Event Type
earthquake
Status
✓ Reviewed
Significance
69
Stations Used
42
Azimuthal Gap
250.0°
Min Station Distance
0.154°
RMS Residual
0.13 sec
Last Updated
2025-09-26 20:42:20 UTC

Nearby Earthquakes (Last 7 Days)

3.7
17 km SE of Silver Springs, Nevada
1 hour ago · 10.7 km deep
2.5
26 km NE of Viola, CA
14 hours ago · -2.0 km deep
2.8
18 km WSW of Petrolia, CA
1 day ago · 21.6 km deep
2.7
26 km NE of Viola, CA
2 days ago · 8.3 km deep
3.4
26 km NE of Viola, CA
2 days ago · 7.0 km deep
3.2
29 km W of Petrolia, CA
2 days ago · 9.3 km deep
3.0
6 km E of Pistol River, Oregon
4 days ago · 6.1 km deep
3.3
9 km NNE of Truckee, CA
5 days ago · 11.3 km deep
2.6
10 km NNE of Truckee, CA
5 days ago · 5.5 km deep
3.9
62 km W of Petrolia, CA
6 days ago · 10.0 km deep

Actions

View on USGSDid You Feel It?

Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Be Prepared

→ What to do during an earthquake→ Create an emergency plan→ Emergency kit essentials→ See all M4.5+ earthquakes today

Authoritative source: USGS event page (event ID: nc75239867). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, September 20, 2025). M2.1 Earthquake 24 km NW of Petrolia, CA — September 20, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75239867/