2.1

M2.1 Earthquake 10km W of Alder Springs, CA — August 2, 2021

2021-08-02 23:03:02 UTC (2021-08-02) · approx. 3:03 PM UTC-8 local

MagnitudeM2.1(md)
Time23:03 UTC≈ 3:03 PM UTC-8
Depth0.4 kmshallow crustal
Coordinates39.667°, -122.844°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 39.67°, -122.84°

Earthquake Details

Magnitude
2.1 md
Depth
0.4 km
shallow crustal
Location
39.6672°N
-122.8443°E

Technical Information

Event ID
nc73604651
Event Type
earthquake
Status
✓ Reviewed
Significance
71
Stations Used
21
Azimuthal Gap
76.0°
Min Station Distance
0.282°
RMS Residual
0.08 sec
Last Updated
2021-08-11 06:20:11 UTC

Nearby Earthquakes (Last 7 Days)

2.7
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2.7
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2.6
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2.8
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2.5
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2.6
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2.6
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2.5
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4 days ago · 10.5 km deep
3.0
21 km WSW of Petrolia, CA
4 days ago · 5.7 km deep
2.7
22 km SSW of Manton, CA
6 days ago · 16.4 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: nc73604651). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, August 2, 2021). M2.1 Earthquake 10km W of Alder Springs, CA — August 2, 2021. Retrieved August 11, 2021 from https://www.earthquaketracker.org/earthquakes/event/nc73604651/