2.7

M2.7 Earthquake 12km WNW of Alder Springs, CA — July 31, 2021

2021-07-31 21:47:30 UTC (2021-07-31) · approx. 1:47 PM UTC-8 local

MagnitudeM2.7(md)
Time21:47 UTC≈ 1:47 PM UTC-8
Depth-0.6 kmshallow crustal
Coordinates39.674°, -122.865°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 39.67°, -122.86°

Earthquake Details

Magnitude
2.7 md
Depth
-0.6 km
shallow crustal
Location
39.6743°N
-122.8645°E

Technical Information

Event ID
nc73603561
Event Type
earthquake
Status
✓ Reviewed
Significance
113
Stations Used
37
Azimuthal Gap
65.0°
Min Station Distance
0.270°
RMS Residual
0.15 sec
Last Updated
2021-10-14 01:04:32 UTC

Nearby Earthquakes (Last 7 Days)

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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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4 days ago · 5.2 km deep
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 2.7 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc73603561). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, July 31, 2021). M2.7 Earthquake 12km WNW of Alder Springs, CA — July 31, 2021. Retrieved October 14, 2021 from https://www.earthquaketracker.org/earthquakes/event/nc73603561/