4.6
Earthquake Details: 1 km SE of Boulder Creek, California, United States
4/2/2026, 8:41:25 AM
A magnitude 4.6 earthquake occurred near 1 km SE of Boulder Creek, California, United States on 4/2/2026 at 8:41:25 AM. The seismic event was recorded at a depth of 10.43 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Regional Seismicity
Technical Details
Depth10.43 km
Significance904
Latitude37.1157
Longitude-122.1125
Event IDnc75337442
Magnitude4.6
Updated:8/13/2026, 8:51:40 AM
External Resources
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Time & depth
- Local time
- 4/2/2026, 1:41:25 AM PDT
- UTC
- 4/2/2026, 8:41:25 AM UTC
10.43 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Aug 13, 2026, 08:51 AM UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.