M3.9

USGS earthquake · M3.924 km ESE of Castle Rock, Washington

Name: M3.9 earthquake at 24 km ESE of Castle Rock, Washington
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

🇺🇸 - United States

Sep 5, 2026, 11:09 AM UTC · 21 hours ago

Map centered on the earthquake at 24 km ESE of Castle Rock, Washington, with a marker at its epicenter

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Shaking intensity

Strongest contour: Light (IV). Modelled by USGS ShakeMap; contours show where shaking was expected to reach each level, not damage.

Depth9.0 km

Origin timeSep 5, 2026, 11:09 AM UTC

Coordinates46.221, -122.604

Tsunami flagNot reported

Magnitude scaleMoment magnitude

SolutionAutomatic, may be revised

Official source

U.S. Geological Survey

Terremoto preserves this event snapshot for a stable public link. USGS remains the authoritative source for revisions and scientific details. Shaking contours and population estimates come from USGS ShakeMap and PAGER, which revise them as more data arrives.

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USGS earthquake · M3.924 km ESE of Castle Rock, Washington

U.S. Geological Survey

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