M 3.5 Earthquake Recorded 23 km SSW of Rancho Palos Verdes, California
Areazine synthesizes this USGS earthquake report directly from USGS's official public data feed. See our methodology for full source attribution and refresh cadence.
A minor magnitude 3.5 earthquake occurred Monday night off the coast of Southern California. The shallow quake was felt by dozens of residents but no damage was reported.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 6, 2026 and geographically references Southern California. Its severity classification of "low" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Earthquakes - determines the monitoring protocol behind it, which shapes what follow-up action (checking for structural damage, watching for aftershocks, reviewing local building codes) is relevant and which agency holds authority over the assessment.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are earthquake, seismic, usgs, California.
What Happened
A minor earthquake with a magnitude of 3.5 mlr was recorded on February 24, 2026, at 05:40 UTC (February 23, 9:40 PM local time). The event occurred at a shallow depth of 10.87 km.
Location Details
The epicenter was located at coordinates 33.553°N, 118.468°W, approximately 23 km south-southwest of Rancho Palos Verdes, California. The depth of 10.87 km is considered shallow; earthquakes at this depth are more likely to be felt on the surface than deeper events.
Impact Assessment
According to the USGS "Did You Feel It?" service, 70 individuals reported feeling the tremor. There is no tsunami advisory, watch, or warning in effect for this event. No alert level color was assigned, and the event is considered routine seismic activity.
What You Should Know
Earthquakes of this magnitude (M 2.5-3.9) are classified as minor. They are often felt by people near the epicenter but rarely cause damage to structures. Residents may experience minor aftershocks, which is routine for seismic activity in this region. During shaking, remember to Drop, Cover, and Hold On.
Source
Information provided by the USGS Earthquake Hazards Program.
Original source: USGS Official Notice ↗
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