M 3.6 Earthquake Strikes 2 km SW of Alamo, CA
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 magnitude 3.55 ml earthquake occurred 2 km southwest of Alamo, California, at a depth of 14.57 km and was felt by 1,046 people.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on June 20, 2026 and geographically references Northern 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 magnitude 3.55 ml earthquake struck 2 km SW of Alamo, CA on 2026-05-07 at 18:17:48 UTC (timestamp 1780846668620). The event was recorded at coordinates 37.838°N, 122.045°W with a depth of 14.57 km.
Location Details
The earthquake was centered 2 km southwest of Alamo, California. This places it in Northern California at latitude 37.8380012512207 and longitude -122.044998168945. The depth of 14.57 km classifies it as shallow (less than 20 km).
Impact Assessment
The earthquake produced 1,046 felt reports with a maximum reported intensity (CDI) of 3.1 and instrumental intensity (MMI) of 3.069. No tsunami was generated (tsunami flag: 0) and no alert level was issued.
What You Should Know
Earthquakes of this magnitude (M 2.5-3.9) are often felt but rarely cause damage. Residents should be prepared for possible aftershocks and follow standard earthquake safety practices such as drop, cover, and hold on during shaking.
Source
Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/nc75372426
Original source: USGS Official Notice ↗
Related Earthquakes
All Earthquakes →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,043 characters here).
Similar severity timing
Same severity (low) notices issued closest in time to June 20, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.