2.1

M2.1 Earthquake 22 km WNW of Boulder Creek, CAMay 14, 2024

2024-05-14 21:10:59 UTC (2024-05-14) · approx. 1:10 PM UTC-8 local

MagnitudeM2.1(md)
Time21:10 UTC1:10 PM UTC-8
Depth11.8 kmshallow crustal
Coordinates37.161°, -122.368°
Felt by1DYFI response
Status✓ Reviewed by USGS

On May 14, 2024 at 21:10 UTC, a magnitude 2.1 shallow crustal earthquake struck 22 km WNW of Boulder Creek, CA, at a depth of 11.8 km and coordinates 37.1613°, -122.3683°.

Physical scale: An earthquake of magnitude 2.1 releases seismic energy equivalent to roughly 18.6 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 16 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 37.16°, -122.37°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M2.1 earthquake near 22 km WNW of Boulder Creek, CA

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
2.1 md
Depth
11.8 km
shallow crustal
Location
37.1613°N
-122.3683°E
Felt Reports
1
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
nc75006806
Event Type
earthquake
Status
✓ Reviewed
Significance
65
Stations Used
46
Azimuthal Gap
197.0°
Min Station Distance
0.041°
RMS Residual
0.16 sec
Last Updated
2024-05-22 03:07:51 UTC

Common Questions

How strong was the magnitude 2.1 earthquake near Boulder Creek, CA?

The magnitude 2.1 earthquake that struck 22 km WNW of Boulder Creek, CA on May 14, 2024 at 21:10 UTC had a depth of 11.8 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75006806). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, May 14, 2024). M2.1 Earthquake 22 km WNW of Boulder Creek, CAMay 14, 2024. Retrieved May 22, 2024 from https://www.earthquaketracker.org/earthquakes/event/nc75006806/