1.7
Earthquake Details: 6 km NNW of Fontana, CA
Aug 31, 2026, 06:37:13
A magnitude 1.7 earthquake occurred near 6 km NNW of Fontana, CA on Aug 31, 2026 at 06:37:13. The seismic event was recorded at a depth of 12.26 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth12.26 km
Significance42
Latitude34.1408
Longitude-117.4895
Event IDci41539568
Magnitude1.7
Updated:Sep 1, 2026, 16:25:57 UTC
External Resources
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Time & depth
- Local time
- Aug 30, 2026, 23:37:13 PDT
- UTC
- Aug 31, 2026, 06:37:13 UTC
12.26 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M3.3Baja California, MexicoBeforeM2.248 km WSW of Encinitas, CABeforeM2.722 km SE of Yosemite Valley, CABeforeM2.492 km SSW of Alberto Oviedo Mota, B.C., MXBeforeM2.617 km SSW of Beatty, NevadaBeforeM2.413 km W of Imperial, CABeforeM2.5Southern CaliforniaBeforeM3.0Baja California, MexicoBeforeM3.1Baja California, MexicoBeforeM2.419 km SW of Toms Place, CABeforeM2.62 km NW of Delta, B.C., MXBeforeM2.922 km SSW of La Quinta, CAAfter
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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: Sep 1, 2026, 16:25 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.