2.6

M2.6 Earthquake 17km NE of Upper Lake, CA — July 24, 2020

2020-07-24 21:20:43 UTC (2020-07-24) · approx. 1:20 PM UTC-8 local

MagnitudeM2.6(md)
Time21:20 UTC≈ 1:20 PM UTC-8
Depth13.3 kmshallow crustal
Coordinates39.263°, -122.756°
Felt by1DYFI response
Status✓ Reviewed by USGS

On July 24, 2020 at 21:20 UTC, a magnitude 2.6 shallow crustal earthquake struck 17km NE of Upper Lake, CA, at a depth of 13.3 km and coordinates 39.2628°, -122.7560°.

Physical scale: An earthquake of magnitude 2.6 releases seismic energy equivalent to roughly 133 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 39 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 39.26°, -122.76°

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 M2.6 earthquake near 17km NE of Upper Lake, CA

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

Earthquake Details

Magnitude
2.6 md
Depth
13.3 km
shallow crustal
Location
39.2628°N
-122.7560°E
Felt Reports
1
DYFI responses
Community Intensity
2.2
CDI from reports

Technical Information

Event ID
nc73432466
Event Type
earthquake
Status
✓ Reviewed
Significance
107
Stations Used
73
Azimuthal Gap
35.0°
Min Station Distance
0.145°
RMS Residual
0.20 sec
Last Updated
2020-10-03 17:32:21 UTC

Common Questions

How strong was the magnitude 2.6 earthquake near Upper Lake, CA?

The magnitude 2.6 earthquake that struck 17km NE of Upper Lake, CA on July 24, 2020 at 21:20 UTC had a depth of 13.3 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 2.6 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.6 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc73432466). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, July 24, 2020). M2.6 Earthquake 17km NE of Upper Lake, CA — July 24, 2020. Retrieved October 3, 2020 from https://www.earthquaketracker.org/earthquakes/event/nc73432466/