M2.8 Earthquake 9 km N of Redwood Valley, CA — June 24, 2026
2026-06-24 17:47:12 UTC (3 hours ago) · approx. 9:47 AM UTC-8 local
On June 24, 2026 at 17:47 UTC, a magnitude 2.8 shallow crustal earthquake struck 9 km N of Redwood Valley, CA, at a depth of 7.9 km and coordinates 39.3432°, -123.1922°.
Physical scale: An earthquake of magnitude 2.8 releases seismic energy equivalent to roughly 256 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 53 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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 9 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
-123.1922°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.8 earthquake near Redwood Valley, CA?
The magnitude 2.8 earthquake that struck 9 km N of Redwood Valley, CA on June 24, 2026 at 17:47 UTC had a depth of 7.9 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 2.8 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 2.8 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.
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.
Actions
Understanding This Data
Magnitude 2.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: nc75383201). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 24, 2026). M2.8 Earthquake 9 km N of Redwood Valley, CA — June 24, 2026. Retrieved June 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75383201/