3.5
Earthquake Details: off the coast of Choshi, Chiba, Japan
Sep 16, 2026, 18:40:00
A magnitude 3.5 earthquake occurred near off the coast of Choshi, Chiba, Japan on Sep 16, 2026 at 18:40:00. The seismic event was recorded at a depth of 300 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth300 km
Significance0
Latitude35.9000
Longitude140.9000
Event IDjma:20260917034007
Magnitude3.5
Updated:Sep 16, 2026, 18:42:00 UTC
External Resources
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Time & depth
- Local time
- Sep 17, 2026, 03:40:00 GMT+9
- UTC
- Sep 16, 2026, 18:40:00 UTC
300 km · Intermediate-focus
Between 70 and 300 km deep.
Nearby major cities
Nearby event sequence · 10
M2.9Northern Coast of Iwate PrefectureBeforeM4.4off the coast of FukushimaBeforeM4.1near the east coast of Honshu, JapanBeforeM4.3off the coast of FukushimaBeforeM2.7Adjacent Sea of Niijima Island, Kozushima IslandBeforeM3.3near the south coast of Honshu, JapanBeforeM2.7northern TochigiBeforeM4.8near the east coast of Honshu, JapanBeforeM3.8off the coast of IwateBeforeM3.1southern IbarakiAfter
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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 16, 2026, 18:42 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.