QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/nc30228270
USGS nc30228270

28 Sept 2004, 18:15

2004 Parkfield, California Earthquake

A magnitude 6 mw earthquake at 8.1 km depth.

Depth8.1 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated30 January 2026Latest timestamp stored in this record

Published location

Where is 2004 Parkfield, California Earthquake?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

35.818167, -120.366000

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Map data © OpenStreetMap contributors

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Nearby events with a similar magnitude

M 6

Near Bishop, California

M 6.1

Near San Jose, California

M 6.1

Northwest of Huron, California

M 6.1

4 km NNW of Round Valley, California

M 6.1

46km E of Big Pine, California

M 5.8

18km SSE of Lone Pine, CA

Catalog fields and provenance
Event ID
nc30228270
Coordinates
35.8181667, -120.366
Network
nc
Significance
1280