M2.5 Earthquake 11 km N of Redwood Valley, CA — June 24, 2026
2026-06-24 15:17:28 UTC (6 hours ago) · approx. 7:17 AM UTC-8 local
Felt by 39 people across nearby locations. Aftershock of the M5.6 mainshock.
On June 24, 2026 at 15:17 UTC, a magnitude 2.5 shallow crustal earthquake struck 11 km N of Redwood Valley, CA, at a depth of 1.8 km and coordinates 39.3623°, -123.2195°. This earthquake was detected by 8 seismic stations with good location accuracy and was assigned a USGS significance rating of 104, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 2.5 releases seismic energy equivalent to roughly 84.8 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 32 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.6 mainshock that occurred 6 hours ago 11 km N of Redwood Valley, CA. Since the mainshock, the USGS has recorded 13 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
The epicenter is located in California, a region characterized by the San Andreas transform fault system, where the Pacific and North American plates slide past each other at roughly 46 mm per year. The nearest mapped fault system is the San Andreas Fault. View all earthquakes in California.
Learn more: San Andreas Fault · Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 39 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-123.2195°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.5 earthquake near Redwood Valley, CA?
The magnitude 2.5 earthquake that struck 11 km N of Redwood Valley, CA on June 24, 2026 at 15:17 UTC had a depth of 1.8 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 39.3623°, -123.2195°, which is 11 km N of Redwood Valley, CA. View all earthquakes in California.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 2.5 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.6 one earlier?
No. This magnitude 2.5 earthquake is an aftershock of the larger magnitude 5.6 mainshock that occurred earlier 11 km N of Redwood Valley, CA. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Has California had earthquakes this big before?
The largest recorded earthquake in California was the M7.9 Fort Tejon earthquake of January 9, 1857. Today's magnitude 2.5 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: nc75382946). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 24, 2026). M2.5 Earthquake 11 km N of Redwood Valley, CA — June 24, 2026. Retrieved June 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75382946/