2.1

M2.1 Earthquake 3 km NW of Hydesville, CA — September 21, 2023

2023-09-21 22:17:27 UTC (2023-09-21) · approx. 2:17 PM UTC-8 local

MagnitudeM2.1(md)
Time22:17 UTC≈ 2:17 PM UTC-8
Depth21.6 kmshallow crustal
Coordinates40.568°, -124.122°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 40.57°, -124.12°

Earthquake Details

Magnitude
2.1 md
Depth
21.6 km
shallow crustal
Location
40.5677°N
-124.1222°E

Technical Information

Event ID
nc73940046
Event Type
earthquake
Status
✓ Reviewed
Significance
67
Stations Used
30
Azimuthal Gap
75.0°
Min Station Distance
0.107°
RMS Residual
0.12 sec
Last Updated
2023-09-27 17:47:00 UTC

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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: nc73940046). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, September 21, 2023). M2.1 Earthquake 3 km NW of Hydesville, CA — September 21, 2023. Retrieved September 27, 2023 from https://www.earthquaketracker.org/earthquakes/event/nc73940046/