2.8

M2.8 Earthquake 33km W of Petrolia, CA — December 20, 2021

2021-12-20 22:45:27 UTC (2021-12-20) · approx. 2:45 PM UTC-8 local

MagnitudeM2.8(md)
Time22:45 UTC≈ 2:45 PM UTC-8
Depth19.0 kmshallow crustal
Coordinates40.319°, -124.674°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 40.32°, -124.67°

Earthquake Details

Magnitude
2.8 md
Depth
19.0 km
shallow crustal
Location
40.3192°N
-124.6745°E

Technical Information

Event ID
nc73666561
Event Type
earthquake
Status
✓ Reviewed
Significance
123
Stations Used
49
Azimuthal Gap
236.0°
Min Station Distance
0.256°
RMS Residual
0.17 sec
Last Updated
2022-03-01 16:38:35 UTC

Nearby Earthquakes (Last 7 Days)

2.6
21 km E of Alum Rock, CA
6 hours ago · 6.3 km deep
3.5
20 km WSW of Petrolia, CA
18 hours ago · 20.1 km deep
3.8
20 km WSW of Gerlach, Nevada
1 day 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
2 days 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 2.8 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc73666561). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, December 20, 2021). M2.8 Earthquake 33km W of Petrolia, CA — December 20, 2021. Retrieved March 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/nc73666561/