M1.77 Earthquake – 20 km E of Castle Rock, Washington

27 July 2026, 11:04 UTC · 1 hour ago · Data: USGS

A magnitude 1.77 earthquake struck 20 km E of Castle Rock, Washington on 27 July 2026, 11:04 UTC, at a depth of 17.1 km. This was a micro earthquake rarely felt by people.

Magnitude
1.77 (ml)
Location
20 km E of Castle Rock, Washington
Date & time
27 July 2026, 11:04 UTC
Coordinates
46.2433, -122.6447
Depth
17.11 km
Region
Worldwide
Source
USGS event page

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