3.8
Earthquake Details: northeastern Chiba
Sep 27, 2026, 00:45:00
A magnitude 3.8 earthquake occurred near northeastern Chiba on Sep 27, 2026 at 00:45:00. The seismic event was recorded at a depth of 500 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth500 km
Significance0
Latitude35.7000
Longitude140.7000
Event IDjma:20260927094524
Magnitude3.8
Updated:Sep 27, 2026, 00:48:00 UTC
External Resources
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Time & depth
- Local time
- Sep 27, 2026, 09:45:00 GMT+9
- UTC
- Sep 27, 2026, 00:45:00 UTC
500 km · Deep-focus
More than 300 km deep. Deep earthquakes can be felt across a wide area.
Nearby major cities
Nearby event sequence · 12
M3.7near the east coast of Honshu, JapanBeforeM3.6northeastern ChibaBeforeM4.1near the east coast of Honshu, JapanBeforeM4.18 km ENE of Kariwa, JapanBeforeM3.2Ise BayBeforeM3.4off the coast of IwateAfterM3.3off the coast of IwateAfterM3.5off the coast of MiyagiAfterM4.3Izu Islands, Japan regionAfterM4.3near the south coast of Honshu, JapanAfterM4.9near the south coast of Honshu, JapanAfterM4.4102 km E of Miyako, JapanAfter
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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 27, 2026, 00:48 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.