2.1

M2.1 Earthquake 23 km W of Petrolia, CA — April 30, 2026

2026-04-30 23:36:44 UTC (2026-04-30) · approx. 3:36 PM UTC-8 local

MagnitudeM2.1(md)
Time23:36 UTC≈ 3:36 PM UTC-8
Depth8.6 kmshallow crustal
Coordinates40.294°, -124.551°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 40.29°, -124.55°

Earthquake Details

Magnitude
2.1 md
Depth
8.6 km
shallow crustal
Location
40.2938°N
-124.5510°E

Technical Information

Event ID
nc75354617
Event Type
earthquake
Status
✓ Reviewed
Significance
68
Stations Used
34
Azimuthal Gap
255.0°
Min Station Distance
0.160°
RMS Residual
0.18 sec
Last Updated
2026-05-05 19:37:19 UTC

Nearby Earthquakes (Last 7 Days)

3.4
70 km W of Ferndale, CA
16 hours ago · 10.4 km deep
3.0
15 km S of Tres Pinos, CA
1 day ago · 5.6 km deep
3.1
23 km WSW of Gustine, CA
1 day ago · -0.7 km deep
3.3
14 km SE of Petrolia, CA
1 day ago · 11.0 km deep
3.1
39 km SSW of Likely, CA
2 days ago · 6.2 km deep
2.5
2 km NW of The Geysers, CA
3 days ago · 0.5 km deep
3.1
80 km WNW of Ferndale, CA
3 days ago · 4.6 km deep
2.5
5 km WSW of Burning Man Earth, Nevada
4 days ago · 1.5 km deep
2.6
18 km WSW of Petrolia, CA
6 days ago · 7.3 km deep
2.6
184 km WSW of Port Orford, Oregon
6 days ago · 10.0 km deep

Actions

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Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75354617). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 30, 2026). M2.1 Earthquake 23 km W of Petrolia, CA — April 30, 2026. Retrieved May 5, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75354617/