2.1

M2.1 Earthquake 9km NNE of Petrolia, CA — December 23, 2021

2021-12-23 19:29:28 UTC (2021-12-23) · approx. 11:29 AM UTC-8 local

MagnitudeM2.1(md)
Time19:29 UTC≈ 11:29 AM UTC-8
Depth25.0 kmshallow crustal
Coordinates40.400°, -124.255°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 40.40°, -124.26°

Earthquake Details

Magnitude
2.1 md
Depth
25.0 km
shallow crustal
Location
40.3998°N
-124.2552°E

Technical Information

Event ID
nc73668126
Event Type
earthquake
Status
✓ Reviewed
Significance
68
Stations Used
16
Azimuthal Gap
137.0°
Min Station Distance
0.098°
RMS Residual
0.12 sec
Last Updated
2021-12-28 21:49:12 UTC

Nearby Earthquakes (Last 7 Days)

2.6
21 km E of Alum Rock, CA
3 hours ago · 6.3 km deep
3.5
20 km WSW of Petrolia, CA
16 hours ago · 20.1 km deep
3.8
20 km WSW of Gerlach, Nevada
23 hours ago · 7.0 km deep
2.7
3 km ESE of Santa Rosa, CA
1 day ago · 9.1 km deep
3.3
17 km WSW of Petrolia, CA
1 day ago · 9.0 km deep
2.6
7 km E of Hydesville, CA
2 days ago · 24.2 km deep
3.3
19 km WSW of Gerlach, Nevada
2 days ago · 11.0 km deep
3.0
9 km SW of Brentwood, CA
2 days ago · 16.9 km deep
2.5
9 km SW of Brentwood, CA
3 days ago · 16.8 km deep
2.6
18 km SE of Silver Springs, Nevada
3 days ago · 7.4 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: nc73668126). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, December 23, 2021). M2.1 Earthquake 9km NNE of Petrolia, CA — December 23, 2021. Retrieved December 28, 2021 from https://www.earthquaketracker.org/earthquakes/event/nc73668126/