M1.77 Earthquake – 8 km W of Saint Helena, CA

18 September 2026, 02:12 UTC · 1 hour ago · Data: USGS

A magnitude 1.77 earthquake struck 8 km W of Saint Helena, CA on 18 September 2026, 02:12 UTC, at a depth of 7.7 km. This was a micro earthquake rarely felt by people.

Magnitude
1.77 (md)
Location
8 km W of Saint Helena, CA
Date & time
18 September 2026, 02:12 UTC
Coordinates
38.4945, -122.5557
Depth
7.65 km
Region
Worldwide
Source
USGS event page

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