M1.81 Earthquake – 4 km ENE of Saint Helena, CA
21 August 2026, 04:19 UTC · 1 hour ago · Data: USGS
A magnitude 1.81 earthquake struck 4 km ENE of Saint Helena, CA on 21 August 2026, 04:19 UTC, at a depth of 6.2 km. This was a micro earthquake rarely felt by people.
- Magnitude
- 1.81 (md)
- Location
- 4 km ENE of Saint Helena, CA
- Date & time
- 21 August 2026, 04:19 UTC
- Coordinates
- 38.5137, -122.4270
- Depth
- 6.20 km
- Region
- Worldwide
- Source
- USGS event page
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