2.8

M2.8 Earthquake 38km WNW of Petrolia, CA — December 21, 2021

2021-12-21 21:35:37 UTC (2021-12-21) · approx. 1:35 PM UTC-8 local

MagnitudeM2.8(md)
Time21:35 UTC≈ 1:35 PM UTC-8
Depth22.0 kmshallow crustal
Coordinates40.395°, -124.721°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 40.40°, -124.72°

Earthquake Details

Magnitude
2.8 md
Depth
22.0 km
shallow crustal
Location
40.3950°N
-124.7213°E

Technical Information

Event ID
nc73667346
Event Type
earthquake
Status
✓ Reviewed
Significance
122
Stations Used
49
Azimuthal Gap
238.0°
Min Station Distance
0.304°
RMS Residual
0.16 sec
Last Updated
2022-03-01 16:39:03 UTC

Nearby Earthquakes (Last 7 Days)

2.6
21 km E of Alum Rock, CA
5 hours ago · 6.3 km deep
3.5
20 km WSW of Petrolia, CA
17 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: nc73667346). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, December 21, 2021). M2.8 Earthquake 38km WNW of Petrolia, CA — December 21, 2021. Retrieved March 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/nc73667346/