2.9

M2.9 Earthquake 12km W of Alder Springs, CA — August 4, 2021

2021-08-04 19:36:05 UTC (2021-08-04) · approx. 11:36 AM UTC-8 local

MagnitudeM2.9(ml)
Time19:36 UTC≈ 11:36 AM UTC-8
Depth4.3 kmshallow crustal
Coordinates39.670°, -122.859°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 39.67°, -122.86°

Earthquake Details

Magnitude
2.9 ml
Depth
4.3 km
shallow crustal
Location
39.6705°N
-122.8585°E

Technical Information

Event ID
nc73605761
Event Type
earthquake
Status
✓ Reviewed
Significance
126
Stations Used
66
Azimuthal Gap
45.0°
Min Station Distance
0.273°
RMS Residual
0.16 sec
Last Updated
2021-10-14 01:07:15 UTC

Nearby Earthquakes (Last 7 Days)

2.7
1 km S of Orange Cove, CA
5 hours ago · 19.4 km deep
2.7
25 km SW of Toms Place, CA
1 day ago · 3.0 km deep
2.6
2 km NW of Hollister, CA
1 day ago · 6.1 km deep
2.8
1 km WNW of Sun Valley, Nevada
1 day ago · 5.1 km deep
2.5
40 km W of Petrolia, CA
2 days ago · 2.0 km deep
2.6
47 km WNW of Petrolia, CA
2 days ago · 26.4 km deep
2.6
12 km W of Lake Nacimiento, CA
2 days ago · 5.2 km deep
2.5
21 km W of Petrolia, CA
2 days ago · 10.5 km deep
3.0
21 km WSW of Petrolia, CA
3 days ago · 5.7 km deep
2.7
22 km SSW of Manton, CA
5 days ago · 16.4 km deep

Actions

View on USGSDid You Feel It?

Understanding This Data

Magnitude 2.9 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc73605761). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, August 4, 2021). M2.9 Earthquake 12km W of Alder Springs, CA — August 4, 2021. Retrieved October 14, 2021 from https://www.earthquaketracker.org/earthquakes/event/nc73605761/